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Screw Product List and Ranking from 313 Manufacturers, Suppliers and Companies | IPROS GMS

Last Updated: Aggregation Period:May 06, 2026~Jun 02, 2026
This ranking is based on the number of page views on our site.

Screw Manufacturer, Suppliers and Company Rankings

Last Updated: Aggregation Period:May 06, 2026~Jun 02, 2026
This ranking is based on the number of page views on our site.

  1. NITTOSEIKO CO., LTD. Kanagawa//Ferrous/Non-ferrous metals
  2. ウィルコ Kanagawa//Industrial Machinery
  3. 松本産業株式会社(ネジの松本産業) 岡発戸工場 Chiba//Machine elements and parts
  4. 4 MORIMOTO SEIMITSU SHAFT Co., Ltd Mie//Machine elements and parts
  5. 5 廣杉計器 Kanagawa//Electronic Components and Semiconductors

Screw Product ranking

Last Updated: Aggregation Period:May 06, 2026~Jun 02, 2026
This ranking is based on the number of page views on our site.

  1. Anti-loosening self-tapping screw for plastic application "GIZATITE(R)" NITTOSEIKO CO., LTD.
  2. Self-tapping screw for resin "P-Tight(R)" NITTOSEIKO CO., LTD.
  3. Technical Data: Dimensions of Hexagon Socket Bolt Machining Holes (Reference Values) MORIMOTO SEIMITSU SHAFT Co., Ltd
  4. Technical Data: Dimensions of Bolt Hole Diameter and Counterbore Diameter MORIMOTO SEIMITSU SHAFT Co., Ltd
  5. 5 Screw Friction Coefficient Stabilizer "Torker Series" 西日本レジコート

Screw Product List

1831~1860 item / All 1976 items

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Improved wind resistance screws for rafters *Notice of trial sample presentation

The Esmaeco treatment has also obtained performance certification for rust and corrosion resistance! It leads to stress-free screw driving operations with low resistance and shorter work time.

We would like to express our heartfelt sympathy to those affected by the typhoon. In light of the passage of the super typhoon through the Japanese archipelago, it has become important to strengthen the joints of wooden structures to minimize wind damage as much as possible. For the screws used to secure the rafters to the horizontal supports in wooden roof joints, we recommend the adoption of the "Z Mark certified square hole tapping screws STS6.5, F135, F180," which clearly state the allowable values for rafter connections based on tests conducted by the Japan Housing and Wood Technology Center. This product also has obtained the X (cross) mark certification for CLT construction methods. With a special surface treatment called "acexma Eco" (which has received anti-corrosion performance certification), it allows for less resistance and stress-free screw driving operations for CLT and various types of laminated wood. Furthermore, to allow you to try out the performance of the Z Mark certified "square hole tapping screw" series, we are currently offering samples. Please contact us and let us know that you would like a sample. We encourage you to consider new initiatives regarding wind resistance performance at this opportunity. *For more details, please refer to the PDF materials or feel free to contact us.

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Z Mark and X (Cross) Mark Certification "Tapping Screw with Square Hole"

Excellent corrosion resistance and smooth driving even with chrome-free coating! Can also be used for fixing floor panels, insulation panels, and securing rafters!

"acexma Eco" is a Z-mark approved square hole tapping screw that can be used for fixing floor panels, insulating panels, and for securing rafters. It can also be used in CLT construction as an X-mark certified product. It has been praised for its excellent lubrication performance, allowing for easy driving of long screws, which reduces construction time. It works smoothly even in hard wood and knot areas, resulting in fewer battery recharge cycles. It features excellent corrosion resistance, having consistently passed the regular tests for HOWTEC surface treatment certification. [Features] - Z-mark and X-mark certified product - Expanded applications for square hole tapping screws - Excellent corrosion resistance and lubrication performance with chrome-free coating - Passed HOWTEC surface treatment certification tests for six consecutive years - Available in five types: STS, 6.5F, 85, 135, 180, 250, and 280 *For sample requests, please specify the size and visit our website. *For more details, please refer to the PDF document or feel free to contact us.

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[About Size] Anti-loosening Bolt "Motion Tight"

【*Prototype trials now open!】Sizes range from M2.5 to M20! "Motion Tight" bolts that are resistant to loosening and breaking.

The "Motion Tight" handled by Art Screw is a revolutionary bolt that eliminates the two major complaints in screw fastening: "loosening and breakage of screws." The screw threads are slightly inclined on the seating side, providing strong rebound force and high loosening prevention capability. 【Sizes of Motion Tight】 ■ M2.5 ■ M3 ■ M4 ■ M5 ■ M6 ■ M8 ■ M10 ■ M12 ■ M14 ■ M16 ■ M20 For more details, please contact us directly.

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Loosening prevention bolt "Are you troubled by the loosening of bolts and screws?"

High-performance loosening prevention screw 'Motion Tight' that prevents loosening and breakage just by tightening normally, with proven applications in automotive components.

Are you troubled by "loose bolts and screws"? Motion Tight is a "loose prevention bolt" that solves your problems with loose bolts and screws. 【Do you have any of these concerns?】 ■ You can't reuse bolts because you are using adhesive... ■ You need bolts that won't loosen because they are installed in a place with a lot of vibration and shaking... ■ It's impossible to prevent loosening with adhesive because it's used in a hot environment... ■ Loosening can be prevented on the nut side, but the female thread side has a tapped hole... ■ You want to implement loosening prevention measures without generating contamination... ⇒ All your problems are solved with the loosening prevention bolt "Motion Tight"! *For more details, please contact us directly using the "Contact Us" button below.

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Anti-loosening bolt 'Motion Tight' for motorcycle parts!

"Motion Tight" bolts suitable for motorcycle components such as engine parts that experience a lot of vibration.

The "Motion Tight" anti-loosening bolt is a bolt equipped with a unique structure that prevents loosening. It is suitable for components of motorcycles (two-wheeled vehicles) such as engine parts and muffler mounting parts due to its strong resistance to loosening. 【Features of Motion Tight】 ■ Strong anti-loosening capability as a standalone bolt ■ Fatigue strength 1.2 to 1.3 times greater, with the same workability as standard bolts ■ Stable axial force even without lubricating oil ■ Low price, high quality ■ Reusable *For more details, please contact us directly using the "Contact Us" button below.

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For securing components in logistics warehouses! Anti-loosening bolt 'Motion Tight'

For emergencies! The anti-loosening bolt 'Motion Tight' is suitable for areas where loosening is unacceptable, such as automatic warehouses, shelves, and bolt racks.

The "Motion Tight" anti-loosening bolt is a bolt equipped with a unique structure that prevents loosening. It is suitable as a fixed bolt in logistics warehouses, automated warehouses, shelves, and bolt racks where loosening of the bolt must not occur, due to its strong resistance to loosening. 【Features of Motion Tight】 ■ Powerful anti-loosening capability as a standalone bolt ■ Fatigue strength 1.2 to 1.3 times higher, with the same workability as standard bolts ■ Stable axial force even without lubrication ■ Low price, high quality ■ Reusable *For more details, please contact us directly via the "Contact Us" button below.

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Contamination-free loosening prevention screws for motors *Compatible with M2 and above

The use of adhesives is not allowed... but the issue of "loosening" is critical. Here is a screw that prevents loosening to solve such problems! It is also suitable for small screws for motors.

Motion Tight is a "looseness prevention bolt" that solves the problem of loosening bolts and screws. Its workability is the same as that of regular screws, allowing for smooth insertion and demonstrating a loosening prevention effect with stable axial force. Motion Tight can adapt to strict conditions such as situations where there is a problem with loosening but the use of adhesives is not possible, or where contamination must be minimized! *It is also compatible with "small screws (M2 and above)" used in motors. 【Product Features】 ■ Strong loosening prevention power with the bolt alone ■ Fatigue strength 1.2 times greater ■ Workability is the same as regular screws, allowing for smooth insertion ■ Stable axial force even without lubricating oil ■ Does not seize even with stainless screws 【Do you have any of these problems?】 - Unable to reuse bolts due to the use of adhesives... - Need bolts that won't loosen because they are incorporated in areas with a lot of vibration or shaking... - Cannot use adhesives because they will be used in high-temperature areas... ⇒ All these issues can be resolved with the loosening prevention bolt "Motion Tight"! *For product details, please view the materials from [PDF Download] or feel free to [Contact Us].

  • Other machine elements
  • Screw

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Loosening prevention bolts and screws that achieve resistance to seizing.

No burning even in fastening stainless steel products! It demonstrates adhesion and sticking prevention effects without surface treatment, and it does not loosen. *Suitable for flow meters and similar applications.

Are you struggling with "seizing of screws"? MotionTite bolts (screws) do not seize even with high-friction materials like SUS and titanium alloys, and they excel in preventing the chronic issue of "loosening." They have a proven track record in the aerospace industry, semiconductor sector, and flow meter-related products. 【Features of MotionTite】 ■ No seizing (prevents adhesion and sticking) → Works with SUS and titanium alloys ■ Strong loosening prevention power with just the bolt ■ Fatigue strength 1.2 times higher ■ Same workability as regular screws, easily inserted ■ Stable axial force even without lubrication ■ Does not seize even with stainless screws ■ Compatible with sizes M3 to M16 ■ Achieves weight reduction and cost reduction through bolt downsizing *For more details, please view the materials from [PDF Download] or feel free to [Contact Us].

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SUS screws for medical devices: 'Loosening prevention screws' that do not loosen or seize.

It is also active in medical devices and manufacturing lines. Just tightening the screw normally prevents loosening, and it won't seize even with stainless steel products!

Motion Tight is a "looseness prevention bolt" that solves the problem of bolt and screw loosening. * It does not experience seizing even with high-friction materials like SUS and titanium alloys. No special installation or work is required; simply tighten the screw normally to prevent loosening and seizing of stainless steel screws. It has a proven track record with SUS screws and is widely used in medical devices and manufacturing lines! 【Features of Motion Tight】 ■ No seizing (prevents adhesion and sticking) → Works with SUS and titanium alloys ■ Strong loosening prevention power with the bolt alone ■ Fatigue strength 1.2 times greater ■ Same workability as regular screws, easily screws in ■ Stable axial force even without lubricating oil ■ Does not seize even with stainless steel screws ■ Compatible with sizes M3 to M16 ■ Achieves weight reduction and cost reduction through bolt downsizing * For more details, please view the materials from [PDF Download] or feel free to [Contact Us].

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[SUS screws for the food industry] No contamination occurrence, screws that do not loosen.

Simply tightening the screw normally prevents loosening and does not cause galling on stainless steel products.

Motion Tight is a "looseness prevention bolt" that solves the problem of loosening bolts and screws. *It does not experience seizure even with high-friction materials like SUS and titanium alloys. No special installation or work is required; simply tighten the screw normally to prevent loosening and seizing of stainless steel screws. There is a wealth of experience with SUS screws, and it is widely adopted in food manufacturing lines! 【Features of Motion Tight】 ■ No seizing (prevention of adhesion and sticking) → Works with SUS and titanium alloys ■ Strong loosening prevention power with the bolt alone ■ Fatigue strength increased by 1.2 times ■ Same workability as regular screws, easily inserted ■ Stable axial force even without lubricating oil ■ Does not seize even with stainless steel screws ■ Compatible with sizes M3 to M16 ■ Achieves weight reduction and cost reduction through bolt downsizing *For more details, please view the materials from [PDF Download] or feel free to [Contact Us].

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Are you having trouble with the "loosening" of screws used in EV-mounted devices and motors?

We offer a variety of screws utilizing advanced locking technology. We can process the screws you provide, eliminating the need for adhesive application on-site.

Nissei Technica is a specialized manufacturer of anti-loosening processing that provides high-quality products at low prices and short delivery times. We can offer anti-loosening screws tailored to your specifications for vehicles such as EVs, motors, and automotive components. We can also process screws that you provide, delivering anti-loosening screws that are perfectly sized for your products. 【Introduction to Anti-Loosening Processing Technology】 "NDS-EL Processing" Achieves both conductivity and adhesion. Provides grounding at the screw part while exhibiting anti-loosening effects. "NEO Processing (Water-based Adhesion Type)" Halogen and toluene-free, compliant with RoHS and REACH. Significantly reduces environmental impact. "TPX Processing" Adsorbs the molding debris generated during screw tightening, preventing it from falling onto printed circuit boards. We will propose processing methods that match your requirements regarding cost, delivery time, and pre-coat color. We also respond quickly to necessary "test processing" during consideration. Please feel free to contact us. ★If you wish to request test processing, please apply through the <Contact Us> section. You can view materials on processing methods and business content from <PDF Download>.

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Fivetech SMT Low-Profile Anti-Drop Screws for Electronic Device Manufacturing

Captive fasteners compatible with automatic assembly to prevent screw drop and loss on PCB substrates!

In the electronics manufacturing industry, it is essential to balance product reliability and maintainability. Particularly in compact electronic devices, the loss or detachment of screws poses a significant problem during assembly and repair. Manual screw tightening not only reduces work efficiency but also carries the risk of forgetting to tighten screws or damaging components due to excessive tightening. The Fivetech SMT low-profile anti-loosening screws address these challenges. 【Usage Scenarios】 - Fixing components on PCB boards - Securing parts within electronic device enclosures - Removing circuit boards during repair and maintenance 【Benefits of Implementation】 - Prevention of screw loss and detachment - Improved work efficiency through automatic mounting - Streamlining of repair and maintenance tasks - Enhanced visibility through the selection of multiple colors

  • 螢幕擷取畫面-691.jpg
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  • Other electronic parts
  • Screw

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Basic Knowledge of Screw Products: What are P=3 and P=4 in Sems screws?

There are different types of semis, and the names and notations change depending on what is included!

Semus screws (integrated screws) are products that incorporate flat washers or spring washers into the screw. There are different types of Semus, and the naming and notation change depending on what is integrated. When requesting Semus, you will need to choose the type of head you prefer. *For more details, you can view the related links. For further information, please download the PDF or feel free to contact us.*

  • others
  • Screw

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Brass C3604 (c3604) round material small diameter screw development proposal China

Leave the development of small-diameter brass products in China to us! 【Brass C3604 (c3604) round products small diameter screws development proposals China】

【Material】 C3604 【Industry and Application】 Medical-related industry 【Lot】 100 to 10,000 【Processing】 NC lathe 【Details】 This is processed using C3604. When considering brass parts, do you have any of the following concerns? - I don't know what processing method to use to manufacture the designed shape. - I want to reduce costs compared to conventional products, but I don't want to compromise on quality. - I want to consider the design shape, but I can't come up with any ideas. Our company has the following features. ≪Matsui Manufacturing's Features≫ 1. Know-how and Ideas We have numerous achievements with major manufacturers in various industries (medical, kitchen, semiconductor, air conditioning, gas equipment, etc.)! Based on the insights gained from each industry, we will propose part shapes and processing methods! 2. Abundant Methods We possess a wide range of processing technologies that allow for integrated production! (Hot forging, cutting processing, brazing, bending processing, assembly, leak testing) 3. Speed Our sales department includes members who have experience in design and processing, enabling us to provide quick and appropriate responses to your requests! For more details, please visit our company website!

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  • valve
  • Screw

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Hole-opening machine Y-axis ball screw 2093545

[High Precision] [Made in Japan] ■ Ball Screw for Y-axis of Hole Drilling Machine

【High Precision】【Made in Japan】 ■ Ball screw for Y-axis of hole drilling machine ■ We also accept ball screw replacement work! *Please consult us for more details.

  • Metal bearings
  • Screw

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Hole-opening machine Z-axis ball screw 2093629

【High Precision】【Made in Japan】 ■ Hole Drilling Machine Z-axis Ball Screw

【High Precision】【Made in Japan】 ■ Ball screw for Z-axis of hole drilling machine ■ We also accept ball screw replacement work! * Please consult us for details.

  • Metal bearings
  • Screw

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Stainless steel drill screws that penetrate 12mm thick iron plates and excel in corrosion resistance.

Sample gift of stainless steel drill screws that improve corrosion resistance, durability, and work speed for construction purposes, including screw-in and corrosion test results.

"Bolts are prone to rust." Are you giving up with that thought? We have good news for such customers. Miyagawa Metal Sales specializes in stainless steel screws. Our company offers the MRX stainless drill screw, a remarkable drill screw boasting exceptional corrosion resistance developed uniquely by Miyagawa. In addition, the FRX drill screw has achieved excellent cost performance through years of technology and experience. It's definitely worth trying at least once! ★ We will give samples to 10 selected companies ★ ★ Those who receive samples will also receive a special original novelty item from Miyagawa Metal ★ 【Features】 ■ Penetrates a 12mm thick steel plate in about 10 seconds ■ Martensitic type ■ Exceptional cutting performance with high-speed drill speed for comfortable and labor-saving work ■ Total cost reduction with durable MRX ■ Adaptable to harsh environments ■ Non-plated with corrosion resistance equivalent to A2 (SUS 304 series) *We have introduced [case studies] at the URL below. If you would like a sample, please contact us through the inquiry form! For more details, please download the PDF or feel free to contact us.

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+Slim head wood screw

The popular Slim Head series has a new wood screw type now available.

What is a slim head wood screw? The slim head wood screw, which has a lower head than a regular wood screw, has arrived! Because the slim head wood screw has a lower head than standard wood screws, it reduces protrusion after installation and can be used in places where flat head screws cannot be used due to thin sheet fastening. It is mainly used as a mounting screw for sash frames. Transitioning from flat head screws to slim head wood screws achieves space-saving, reduces labor, and improves operational efficiency.

  • bolt
  • Screw

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Please tell us about any issues you have with special screws! [Introduction of mass production examples]

We have published examples of proposals for ultra-low round head bolts, shelf dowels, and washers with protrusions!

In this document, we introduce five key points to identify common issues that may arise during mass production of cold-formed and special screws at the prototype stage. We explain whether the product requires extensive post-processing, whether there are strict tolerances on unnecessary parts, and more. We also include unique proposal examples and product cases from Tainishi Seiko. We encourage you to read it. 【Contents (partial)】 ■ Five key points to identify common issues during mass production at the prototype stage - Is the product one that requires extensive post-processing? - Are there strict tolerances on unnecessary parts? - Are there thin sections that put a burden on the mold? - If post-processing is necessary, is the product shaped for easy flow in automatic machines? - If plating is required, is the shape conducive to easy plating? *For more details, please refer to the PDF document or feel free to contact us.

  • Contract manufacturing
  • Screw

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SUS(+) flat head M5, over 1,000 types of custom products manufactured!

[Step screws for nursing care products] 90% are custom-made. We offer suggestions for material selection, cost reduction, and strength enhancement in the processing stages. Samples are available.

Our company is a screw management enterprise that has established a network system capable of meeting various customer needs, from caster parts to furniture-related screws and hinge pins. We handle caster parts and furniture-related screws, and we also accommodate custom manufacturing upon request. We have a maximum production capacity of 60 to 70 tons per month. At Tsukayoshi Manufacturing Co., Ltd., we value thinking from the customer's perspective and making sales and proposals accordingly. 【Features】 - Material used is SUS XM7. - Header processing → Cam-type cutting → Rolling processing.

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SUS430 dish with a step 5.0×16.5 Custom production of over 1,000 types

[Use of adjustment wheels for residential use] 90% are custom-made. We offer suggestions for material selection, cost reduction, and strengthening processes. Samples available.

Our company is a screw management enterprise that has established a network system capable of meeting various customer needs, from caster parts to furniture-related screws and hinge pins. We handle caster parts and furniture-related screws, and we also accommodate custom manufacturing upon request. We have a maximum production capacity of 60 to 70 tons per month. At Tsukayoshi Manufacturing Co., Ltd., we value thinking from the customer's perspective and making sales and proposals accordingly. 【Features】 - We manufacture using molds and multi-stage headers.

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Square head with a segment RT11.0×14.3 Custom production of over 1,000 types.

【For caster main shafts】90% are custom-made. We offer suggestions for processing steps such as material selection, cost reduction, and strength enhancement. Samples are available.

Our company is a screw management enterprise that has established a network system capable of meeting various customer needs, from caster parts to furniture-related screws and hinge pins. We handle caster parts and furniture-related screws, and we also accommodate custom manufacturing upon request. Our maximum production capacity is 60 to 70 tons per month. At Tsukayoshi Manufacturing Co., Ltd., we value thinking from the customer's perspective and making sales and proposals accordingly. 【Features】 - Material: 10R material - Wire diameter: φ10.90 is used. - After double-header processing, it is shaped into a square with trimming processing.

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Daruma nails 4.5mm, with a track record of producing over 1,000 custom items.

[Key Components] 90% are custom-made products. We offer suggestions for processing steps such as material selection, cost reduction, and strength enhancement. Samples are available.

Our company is a screw management enterprise that has established a network system capable of meeting various customer needs, from caster parts to furniture-related screws and hinge pins. We handle caster parts and furniture-related screws, and we also accommodate custom manufacturing as per your requests. We have a maximum production capacity of 60 to 70 tons per month. At Tsukayoshi Manufacturing Co., Ltd., we value thinking from the customer's perspective and making sales and proposals accordingly. 【Features】 - Processed by forging from material with a wire diameter of φ4.45 to φ4.0. - Used as components for latches.

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Presenting the materials! Leave the pinhole processing to us!

For power, civil engineering, transportation equipment, construction-related applications, and more, we provide bolt retainers, anti-rotation devices, and fall prevention solutions! We also have a track record of producing over 1,000 types of custom products!

*Currently featured on Instagram* Our company is a screw management enterprise that has established a network system capable of meeting various customer needs, from caster parts to furniture-related screws and hinge pins. We handle construction-related and public facility screws, and we also accommodate custom manufacturing based on your requests. We have a maximum production capacity of 60 to 70 tons per month. At Tsukayoshi Manufacturing Co., Ltd., we value thinking from the customer's perspective and prioritize sales and proposals. We are posting information about each product on Instagram. Please check for the latest updates! **Main Production Items** - Machine parts - Construction-related screws - High-design switch knobs - Shafts - Hinges - Public facilities - Other special screw sales *For more details, please refer to the PDF document or feel free to contact us.*

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Asphalt(R) WP for Solar Power Generation

Improving the weather resistance of solar power generation systems with high axial force and waterproof performance.

In the solar power generation industry, long-term durability is required in harsh environments exposed to rain and wind, as installations are set outdoors. In particular, the waterproofing of connection points is crucial for maintaining system performance. Low waterproofing can lead to corrosion and insulation failure due to water ingress, resulting in decreased power generation efficiency and potential failures. Asfa(R) WP achieves a balance of high axial force and waterproofing, contributing to the reliability of solar power generation systems. 【Usage Scenarios】 - Fixing solar panel frames - Waterproofing connection boxes - Securing mounting structures 【Benefits of Implementation】 - High waterproof performance contributes to the longevity of the system - High axial force prevents loosening due to strong winds and vibrations - No need for countersinking, reducing construction costs

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Asfa(R) WP for Home Appliances - Balancing Waterproof Performance and Workability

No need for ZAGRI processing! O-ring embedded screws that achieve high axial force and waterproofing.

In the home appliance industry, as products become smaller and more functional, measures to prevent failures due to water exposure have become important. In particular, products intended for outdoor use or those designed for use in wet areas require high waterproof performance. Traditional waterproofing measures often necessitate counterboring, which can lead to increased costs. The Asfa(R) WP is a waterproof screw that achieves high axial force and waterproofing by incorporating an O-ring and flat washer beneath the head. 【Usage Scenarios】 - Outdoor-installed home appliances - Kitchen appliances - Bathroom televisions - Washing machines 【Benefits of Implementation】 - Elimination of the need for counterboring, reducing total costs - Improved product reliability due to high waterproof performance - Contribution to the efficiency and automation of the assembly process

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Stainless Steel (SUS303) Spacer Hexagon Male Thread with SP

Stainless Steel (SUS303) Spacer Hexagon Male Thread with SP "WSU-SP"

■Features - It is a stainless steel hexagonal male-female spacer. - The spacer is made of "SUS303" material. - It is a product with excellent strength, corrosion resistance, and heat resistance. - The spacer comes with a washer to prevent loosening. - Compliant with EU-RoHS2.

  • Other electronic parts
  • Screw

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Stainless Steel (SUS303) Spacer Hex Tapping Screw

Stainless Steel (SUS303) Spacer Hex Tapping Screw "TSU"

■Features - It is a stainless steel tapping screw spacer. - The spacer is made of "SUS303" material. - It is a product with excellent strength, corrosion resistance, and heat resistance. - The screw part is designed for tapping screws. - Compliant with EU-RoHS2.

  • Other electronic parts
  • Screw

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Stainless Steel (SUS303) Spacer Hexagonal Both Ends Threaded

Stainless Steel (SUS303) Spacer Hexagonal Both Ends Threaded "ESU"

■Features - It is a stainless steel hexagonal double-threaded spacer. - The spacer is made of "SUS303" material. - It is a product with excellent strength, corrosion resistance, and heat resistance. - Compliant with EU-RoHS2.

  • Other electronic parts
  • Screw

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