大丸鋲螺製作所 List of Products and Services

We would like to introduce our "Nylon Cosmetic Screws (± Type)." These screws use nylon resin for the plastic part, and we can also produce custom colors. We accept orders starting from 10,000 pieces. If you can't find the product you are looking for, please feel free to contact us. We will propose products that meet your needs. 【Dimensions】 ■12×7×8.5mm *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce our "Nylon Cosmetic Screws (Cross Hole Type)." The screw part is made of SWCH (trivalent chrome), and the resin part is made of nylon resin, with the possibility of producing custom colors. "If you can't find the product you are looking for..." please feel free to contact us. We will propose products that meet your needs. 【Dimensions】 ■NO.1: 12×6×10mm ■NO.2: 15×8×13mm *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce our "Nylon Decorative Nuts." The nut part is made of BSBM (less than 75ppm Cd), and the resin part is made of nylon resin. We have stock in white and black, and we can also produce custom colors that cannot be made with urea decorative screws. "If you can't find the product you are looking for..." please feel free to contact us. We will propose products that meet your needs. 【Dimensions】 ■NO.1: 11×6.5×8.5 Effective 3mm ■NO.2: 14×8×11 Effective 4mm ■NO.3: 17×9.5×12.5 Effective 5mm ■L-1: 20×10.5×16 Effective 4.5mm ■L-2: 25×12×21 Effective 5.5mm (M8 is 4.5) *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce our "Nylon Decorative Screws." Custom colors that cannot be produced with urea decorative screws are also possible. They are strong and excel in wear resistance, lubricity, chemical resistance, and oil resistance. If you can't find the product you are looking for, please feel free to contact us. We will propose products that meet your needs. 【Features】 ■ Custom colors that cannot be produced with urea decorative screws are also possible ■ Strong and excels in wear resistance, lubricity, chemical resistance, and oil resistance ■ Complies with RoHS2, REACH regulations, and more ■ Heat resistance temperature (momentary): 80℃ *For more details, please refer to the PDF document or feel free to contact us.

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The "High Pick Nut" is a product that can be molded using materials such as ABS and PP. We can produce it in any color upon request (standard stock is white and black). With the completion of our mass production system, we can achieve significant cost reductions. Additionally, we offer two types: "NO.1" and "NO.2." 【Features】 ■ Can be molded using materials such as ABS and PP ■ Can be produced in any color upon request (standard stock is white and black) ■ Significant cost reductions can be achieved with the completion of our mass production system *For more details, please refer to the PDF document or feel free to contact us.

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The "Ultra Low Head Seal Cap Bolt" prevents leaks simply by tightening, as the shield ring on the back of the screw stops any leakage. Its low head allows for installation in tight spaces and compact areas. It does not compromise appearance and excels in design and aesthetics. It can be installed on thin materials that cannot accommodate countersinking, eliminating the need for countersink processing, which leads to cost reduction. 【Features】 ■ Leak prevention and improved work efficiency ■ High waterproof performance ■ Compact and lightweight ■ Cost reduction ■ Reusable *For more details, please refer to the PDF document or feel free to contact us.

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The "Patchin Adjuster" is a product that allows for changes in screw size and material according to its intended use. It can be adjusted in three ways. There is a guide (groove) on the main body for fitting the cap's claws, enabling smooth operation. The cap is available in four colors: blue-green, black, white, and pink. 【Features】 ■ Screw size and material can be changed according to the intended use ■ Can be adjusted in three ways ■ The main body has a guide (groove) for fitting the cap's claws, allowing for smooth operation ■ The cap is available in four colors (blue-green, black, white, pink) *For more details, please refer to the PDF document or feel free to contact us.

• bolt
• Other machine elements

We will introduce a case that contributed to reducing manufacturing costs by adding additional functions to general-purpose screws. Not only can they be produced at a low mold cost, but they also reduce assembly man-hours, resulting in lower manufacturing costs. Furthermore, various variations are possible, such as adding serrations. At our company, we listen to our customers' requests, consider various manufacturing methods, and propose products that satisfy our customers by solving their fastening issues. 【Advantages】 ■ Can be produced at a low mold cost ■ Reduces assembly man-hours, leading to lower manufacturing costs ■ Various variations are possible, such as adding serrations *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing
• Other contract services

Here is an example of proposing hot forging processing for fine blanking (press) processing. By changing the processing method, the processing accuracy improves. Furthermore, the finished state becomes very clean. At our company, we listen to our customers' requests, consider various manufacturing methods, and propose products that satisfy our customers by solving their fastening-related problems. 【Advantages】 ■ Improved processing accuracy ■ Very clean finished state *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing
• Other contract services

We will introduce a case where product costs were reduced by combining nut forming processing and press processing. The customer attempted to manufacture using nut forming processing, but production was not possible due to cracking. Therefore, leveraging our expertise, we proposed manufacturing by combining nut forming processing and press processing with our unique process. Products that could not be made with conventional methods became manufacturable without incurring high costs. We listen to our customers' requests, consider various manufacturing methods, and propose products that satisfy their needs in solving fastening issues. 【Advantages】 ■ Complex products that could not be made with nut forming processing alone can now be created by combining it with press processing. ■ Areas that were difficult or impossible to process with conventional cutting methods can now be easily processed. *For more details, please refer to the PDF materials or feel free to contact us.

• Contract manufacturing
• Other contract services

We will introduce a case where we reduced manufacturing costs by combining cold forging and press processing. Since we were only using press processing, there was a lot of variation, and we received inquiries from customers about how to produce products with stable precision at a lower cost. In response, we proposed a combination of cold forging and press processing. This not only achieves stable quality but also opens up possibilities for new processing methods. At our company, we listen to our customers' needs, consider various manufacturing methods, and propose products that satisfy them by solving their fastening-related challenges. **Advantages of Combining Processing Methods** - Stability in quality can be achieved by combining with cold forging. - The stabilization of quality may lead to the possibility of new processing methods. *For more details, please refer to the PDF document or feel free to contact us.*

• Contract manufacturing
• Other contract services

Here is a case where we proposed cost reduction and increased strength when we received a customer's order. By changing the processing method, we achieved not only a significant cost reduction in manufacturing expenses but also advantages such as "stabilization of metal flow and increased strength through plastic molding" and "mitigation of rising material costs for stainless steel and brass." As a result of this proposal, we were able to reduce costs by 15 yen per unit. At our company, we listen to our customers' requests, consider various manufacturing methods, and propose products that satisfy our customers by solving their fastening problems. 【Comparison (Machining / Cold Forging)】 ■ Lot: 5,000 units / 10,000 units ■ Unit price: 40 yen / 20 yen ■ Mold cost: - / 50,000 yen ■ Material: C3604 / S2700W ■ When producing 10,000 units: 10,000×40=￥400,000- / 10,000×20+50,000=￥250,000- *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing
• Other contract services

Here is an example of a proposed flow for the production of custom-made screws. Our unique production process flow (flowchart) is as follows: Basic drawing (meeting) → Selection of manufacturing method → Factory meeting → Creation of manufacturing drawings (customer) → Order receipt → Prototyping → Customer check → Mass production → Surface treatment → Inspection → Packaging → Delivery Additionally, we also propose the "Cock Method (Consignment Sales Method)" to eliminate inventory management and purchasing hassles, as well as our "Assembly Business." At our company, we listen to our customers' requests, consider various manufacturing methods, and propose products that satisfy our customers by solving their fastening-related issues. *For more details, please refer to the PDF materials or feel free to contact us.

• Contract manufacturing
• Other contract services

The "DAIMARU Locking Series Catalog" is a catalog featuring locking screws provided by Daimaru Bolt Manufacturing Co., Ltd. It includes products such as "Lead Lock," which prevents loosening through the spring action of a friction ring crimped onto the nut head, as well as "Washer-equipped Nuts" and "Petal Fasteners." The catalog features a wide variety of screws that can be used in applications including home appliances, machinery, construction materials, robotics, medical equipment, automotive, and agricultural tools. [Featured Products (Excerpt)] ■ Lead Lock ■ Nylon Nut ■ Washer-equipped Nut ■ Soloon ■ BD Washer-equipped Nut *For more details, please refer to the PDF document or feel free to contact us.

• nut
• Other machine elements

The seal series features a single unit that provides leak prevention, excellent oil resistance, heat resistance, and weather resistance. Since it is integrated with the shield, it offers great workability, good functionality, and can be used in tight spaces. "If you're using a packing but finding it difficult to arrange the perfect size for the bolt..." "I apply a coating during tightening, but it takes time to find the right coating agent, apply it, and let it dry." "I just want to prevent leaks, no matter what." If you have such concerns, please download our comprehensive catalog with test data for your review. 【Main Features】 ■ Leak Prevention… The shield ring behind the screw and washer stops leaks! ■ Work Efficiency… The screws and washers are integrated with the shield ring, making work speedy! ■ High Waterproof Function… Passed the waterproof test of 20MPa for 1 minute! ■ Reusable… Can be reused as long as the shield ring is not damaged. *For more details, please contact us or download the PDF.

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The Seal Series features a single unit that provides leak prevention, excellent oil resistance, heat resistance, and weather resistance. Since it is integrated with the shield, it offers excellent workability and functionality, making it suitable for use in tight spaces. "For those who are struggling with: 'I have a packing, but it's difficult to arrange the perfect size for the bolt...' or 'I apply a coating during tightening, but it takes time to find the right coating agent, apply it, and let it dry,' or 'I just want to prevent leaks!'" If you have such concerns, please download our comprehensive catalog with test data and take a look. 【Main Features】 ■ Leak Prevention... The shield ring behind the screws and washers stops leaks! ■ Work Efficiency... The screws and washers are integrated with the shield ring, making work speedy! ■ High Waterproof Function... Passed the waterproof test of 20MPa for 1 minute! ■ Reusable... Can be reused as long as the shield ring is not damaged! *For more details, please contact us or download the PDF.

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A new product with a flat head pan head has been released for the original metal product "Seal Screw"! It has been evaluated in waterproof and dustproof tests IP65/IP68. The "Seal Screw" provides leak prevention functionality with just this one product. It excels in oil resistance, heat resistance, and weather resistance. Because it is integrated with a shield, it offers excellent workability. Its functionality is good, allowing for use in narrow spaces. It can be reused (1 to 3 times). 【Main Features】 ○ Leak prevention functionality with just this one product ○ Excellent oil resistance, heat resistance, and weather resistance ○ Excellent workability due to integration with the shield ○ Good functionality and usable in narrow spaces due to integration with the shield ○ Reusable (1 to 3 times) 【Other Features】 ○ Minimizes gaps between the screw and the counterpart, blocking water, oil, air, etc. ○ Usable with a wide range of equipment 　・Measurement instruments, outdoor installation equipment, automatic control equipment, air conditioning equipment 　・Medical devices, underwater equipment, communication devices, construction equipment, transport equipment 　・Other equipment *For more details, please contact us or download the catalog.

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A new product with a flat head screw design has been introduced in the original metal product "Seal Screw"! It has been evaluated through waterproof and dustproof tests IP65/IP68. The "Seal Screw" provides leak prevention functionality with just this one product. It excels in oil resistance, heat resistance, and weather resistance. Since it is integrated with a shield, it offers excellent workability. Its functionality is good, allowing for use in narrow spaces. It can be reused (1 to 3 times). 【Main Features】 - Leak prevention functionality with just this one product - Excellent oil resistance, heat resistance, and weather resistance - Excellent workability due to integration with the shield - Good functionality and usability in narrow spaces due to integration with the shield - Reusable (1 to 3 times) 【Other Features】 - Minimizes gaps between the screw and the counterpart, blocking water, oil, air, etc. - Usable with a wide range of equipment - Measuring instruments, outdoor installation equipment, automatic control equipment, air conditioning equipment - Medical devices, underwater equipment, communication devices, construction equipment, transport equipment - Other types of equipment *For more details, please contact us or download the catalog.

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In this catalog, we introduce products handled by Daimaru Bolt Manufacturing Co., Ltd. We feature a variety of products, including the "Plapoint" with its beautiful appearance and rich color variations, as well as the simple-shaped "Grip Ball" and the excellently designed "Grip Bolt" that prioritizes ease of gripping. Additionally, our company handles many custom products in addition to standard items, and if you use over 3,000 pieces annually, you can expect significant cost reductions by amortizing the mold costs. Please use this for selecting products. 【Featured Products (Partial)】 ■ Plapoint ■ Nylon Decorative Screws ■ Nylon Decorative Nuts ■ Nylon Decorative Screws (Cross Hole Type) ■ Nylon Decorative Screws (± Type) *For more details, please refer to the PDF document or feel free to contact us.

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• bolt

The "Reverse Serrated S-Type Plate" is a conductive screw with a reverse serration feature that allows for electrical conductivity with just this one piece. By adding a reverse serration to the back of the screw, it creates the minimum necessary conductive area by scraping the plating or paint on the opposing side during tightening, without removing unnecessary parts. The serration strips the paint simply by tightening, eliminating the need for masking and contributing to cost reduction. 【Features】 ■ Capable of removing plating or paint to a minimum ■ Usable repeatedly as long as the serration does not deform ■ Easy to use ■ Inexpensive Exhibiting at the 19th Kansai Machine Element Technology Exhibition! Dates: October 5 (Wed) - October 7 (Fri), 2016, 10:00 AM - 6:00 PM (until 5:00 PM on October 7 only) Venue: Intex Osaka Booth Number: Hall 3, 14-32 * As this is a made-to-order product, there is no stock available. * For more details, please refer to the catalog or feel free to contact us.

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The "oval seal screw" features a head that is close to an oval shape, with no recesses or edges such as cross or hex holes, and comes with a waterproof seal. It is less likely to scratch when in contact with soft materials and prevents dust and dirt. Additionally, it is easy to clean and prevents snagging on cloth and other materials. Because it cannot be removed or attached with standard screwdrivers or tools, it is ideal for clean rooms, medical applications, food equipment, and security products. 【Features】 ■ Work is SPEEDY due to the screw being integrated with the shield ring! ■ Passed a waterproof test at 20MPa for one minute with CLEAR results! ■ No recesses such as cross or hex holes on the head, preventing dust and dirt accumulation. ■ Work is done with specialized tools, making it less prone to tampering. ■ The shield part can be customized to accommodate materials such as silicone, fluororubber, and EPDM. 【Material】 Screw part: SUS-XM7 Shield part: NBR (hardness 70°±5°) *For more details, please refer to the catalog. Feel free to contact us with any inquiries.

• bolt
• Sealing
• others

This is a large grip bolt with a maximum diameter of Φ70. It features a design that prioritizes ease of gripping and can be used for various applications! We also offer M6 dimensions, which are not commonly produced by other companies. We have stock available, so we can provide it to you immediately when needed! 【Features】 - A large grip with a maximum diameter of Φ70, designed for ease of gripping. - The head (plastic part) is made of a special polyamide reinforced with glass beads, enhancing impact resistance and weather resistance! - Made to order from 200 pieces, depending on dimensions. For more details, please contact us or download the PDF.

• bolt
• nut

The "Seal Series" includes screws, washers, bolts, and seal cap bolts that have a shield ring embedded in the back of the screw or bolt head, providing a leak prevention function! The structure prevents the ring from protruding when tightened, making it difficult for gaps to form between the bolt and the counterpart, effectively sealing water, oil, air, and more with just one piece. If you're struggling to find the perfect size for your bolts even with gaskets, this single solution will resolve your issue! 【Features】 ■ Can be reused repeatedly as long as the shield ring is not damaged! ■ Excellent oil resistance, heat resistance, and weather resistance ■ Fast work with screws and washers integrated with the shield ring! *For more details, please download the catalog or contact us directly.

• bolt
• Sealing

The Seven Nob Bolt/Nut is an insert-molded screw designed to pursue ease of grip and a "fit" that conforms to the hand, thanks to its rounded seven-sided shape. By using PBT (polybutylene terephthalate) for the resin part and SUS316L for the screw part, it significantly improves chemical resistance, making it an ideal product primarily for medical and nursing equipment. *For more details, please download the catalog or contact us directly.

• nut
• Resin mold
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We would like to introduce our original metal product, the "Seal Washer." It excels in oil resistance, heat resistance, and weather resistance, preventing the ingress of water, oil, and air when the screw is tightened, thanks to the rubber's tight fit. We particularly recommend the thick body for outdoor use. 【Features】 ○ Can be used with various screw shapes (except for flat screws) ○ Excellent oil resistance, heat resistance, and weather resistance ○ Can be used even with large countersinks due to its wide seating surface (refer to the size chart) ○ The rubber tightly adheres when the screw is tightened, preventing the ingress of gases and liquids (the tightening torque depends on the strength classification of each size) ○ Can be reused repeatedly as long as there is no damage to the rubber ○ Especially recommended for outdoor use is the thick body For more details, please contact us or download the catalog.

• Other machine elements

The "Seal Bolt," an original metal product developed by Daimaru Bolt Manufacturing Co., Ltd., features a shield ring embedded in the back of the bolt head. This design prevents the ring from protruding when tightened, minimizing gaps between the bolt and the counterpart, effectively blocking water, oil, air, and other substances. It has a leak prevention function on its own. Additionally, because it is integrated with the shield, it excels in workability and functionality, and it is also highly resistant to oil, heat, and weather. 【Features】 - Leak prevention function on its own - Excellent resistance to oil, heat, and weather - Superior workability and functionality due to the integrated shield - Recommended for outdoor use with a thicker body (to enhance airtightness) - Can be reused repeatedly as long as there is no damage to the rubber *For more details, please contact us or download the catalog.

• bolt
• Sealing

The original metal product "Seal Screw" has a leak prevention function with just this one piece. It excels in oil resistance, heat resistance, and weather resistance. Because it is integrated with the shield, it offers excellent workability. Its functionality is good due to the integration with the shield, allowing for use in narrow spaces. It can be reused (1 to 3 times). 【Main Features】 ○ Leak prevention function with just this one piece ○ Excellent oil resistance, heat resistance, and weather resistance ○ Excellent workability due to integration with the shield ○ Good functionality and usable in narrow spaces due to integration with the shield ○ Reusable (1 to 3 times) 【Other Features】 ○ Difficult to create gaps between the screw and the counterpart, blocking water, oil, air, etc. ○ Usable for a wide range of equipment - Measuring instruments, outdoor installation equipment, automatic control equipment, air conditioning equipment - Medical devices, underwater equipment, communication devices, construction equipment, transport equipment - Other types of equipment * For more details, please contact us or download the catalog.

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Double-molded plastic rubber into a plastic inner. The grip area has been finished to be soft.

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- It absorbs and accumulates light from the sun and fluorescent lamps, and emits light by itself. - With improved phosphorescent capabilities, it exhibits excellent brightness and afterglow time. - It is produced to order in quantities of over 10,000 units and can be molded in sizes M3 to M6.

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The silk (with brim) part prevents resin leakage, while the patterned knurling part maintains tensile strength and tightening strength.

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By adding three points on the back side of the screw head, it is possible to create a conductive area while minimizing the removal of paint or plating during rotation. Since the three points on the back side of the screw head can remove paint or plating, it eliminates the need for masking when painting, and there is no need to attach other accessories to the screw to remove the paint. 【Features】 ■ No need to attach other accessories to the screw! ■ No hassle of masking when painting! ■ Reusable! *For more details, please contact us or download the catalog to view.

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The "E-Nut" is a nut that is resistant to loosening even without the use of a washer. It absorbs vibrations through the screw itself, and since the material has elasticity, it ensures a secure tightening. 【Features】 ■ It has the functions of a flange nut and a spring washer! ■ It absorbs vibrations through the screw itself, making it resistant to loosening! ■ It is strong because the rolling process does not cut the material's structure! 【Suitable for customers like this!】 ◎ Bolts and nuts tend to loosen easily, and it's a problem... ◎ It's a hassle to insert washers and spring washers... ◎ I want to prevent loosening without using adhesive! *For more details, please contact us or download the PDF.

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The "Seal Cap Bolt" features a shield ring on the back side of the screw head that prevents fluid leakage, allowing for leak prevention simply by tightening the bolt. Since all elements for leak prevention are packed into a single bolt, it significantly reduces the labor and costs associated with leakage countermeasures. 【Features】 ■ Excellent oil, heat, and weather resistance, suitable for indoor and outdoor use ■ The screw is made of SUS material, preventing rust ■ The shield part is made of NBR70° (other materials such as silicone, EPDM, and fluorine rubber are also available) ■ Can be reused multiple times as long as the shield part is not damaged ■ The head is small in diameter, making it even more compact than conventional designs.

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Guided screws have a guide at the tip, allowing for smooth operation even in hard-to-see areas. With serrations, they provide a strong tightening effect without the need to incorporate outer or inner washers. 【Features】 ■ Smooth operation even in hard-to-see areas! ■ Easy tightening even with difficult hole alignment! ■ Can be used repeatedly! *For more details, please contact us or download the catalog to view.

• bolt
• Sealing

The mushroom knob from Daimaru Screw Manufacturing is the optimal shape for an operating knob. We have enriched the variety of L dimensions. For detailed specifications such as dimensions and sizes, please contact us or download the catalog.

• nut
• Resin mold
• bolt

Registered Trademark No. 4394258

• bolt

The segmented grip "bolt/nut" features a compact body. It is a new model with high potential. For more details, please contact us.

• nut
• bolt

Good Design

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Easily detachable with one touch.

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Registered Trademark No. 1-33671

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We will custom process parts for medical devices, electronic devices, measuring instruments, eyewear, cutting-edge precision machining parts, and various other applications. Please contact us for more details.

• Processing Contract

PBT adoption

• bolt

"See-through bolts / see-through nuts" are made from polycarbonate (PC) bolts and polycarbonate (PC) nuts with resin insert molding. They are transparent and aesthetically pleasing. Lightweight. Excellent electrical insulation properties. Inexpensive. For more details, please contact us.

• nut
• bolt

The 'anti-drop screw' is for distribution and sub-distribution panel boxes, control equipment, and other boxed devices. It can be attached and detached with one touch, significantly reducing assembly time. There is no loss of parts (E-rings, washers) during on-site work. It protects the painted surface of doors. For more details, please contact us.

• bolt

This is an introduction to cost reduction examples through cold forging from machining. We will present cost comparison examples. For more details, please contact us.

• Processing Contract