由良産商株式会社　特販部　特販課 List of Products and Services

The "Yakituka Nut" is a heat-resistant nut made of stainless steel, coated with a multilayer plating (YK coat) developed by Yudensha Co., Ltd. With its high adhesion, the plating is resistant to peeling, maintaining its anti-seizing effect even after repeated use. The dry finish eliminates dripping, similar to using lubricating oil, and requires no application time. Additionally, it features a distinctive cloudy color compared to typical stainless steel nuts, and due to the difference in color compared to other stainless materials, we can accommodate requests for a natural finish where the outer layer is removed while leaving the three-layer plating on the threaded part. [Features] ■ Can be applied to aluminum ■ Natural finish available ■ Other shapes and sizes can be accommodated *For more details, please download the PDF or feel free to contact us.

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Yura Sangyo Co., Ltd. offers "hex bolts" with a strength guarantee of 8.8. Most standard 8.8 hex bolts are made from boron steel or SWCH35K, but our product uses "SCM435" and is managed under appropriate heat treatment conditions, ensuring a strength of 8.8 even after being treated at high temperatures during hot-dip galvanization. Please feel free to contact us when placing an order. 【Hex Bolt Sizes】 - M10 x 20–75 - M12 x 30–75 - M16 x 35–100 - M20 x 40–100 - M22 x 55–120 - M24 x 60–120 - M27 x 70–150 - M30 x 70–150 *For more details, please download the PDF or feel free to contact us.

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We would like to introduce our "High-Strength Aluminum Hex Nuts." These nuts are made from super duralumin "A7075" that has undergone T6 heat treatment, achieving a strength of 600 N/mm² or more, which exceeds the aluminum strength classification AL6 and is comparable to the steel "strength classification 6." Additionally, the surface treatment is white anodizing, with a surface hardness of HV149 or higher. We offer nominal sizes of M6, M8, M10, and M12. 【Specifications】 ■ Material: A7075 ■ Heat Treatment: T6 Treatment ■ Surface Treatment: White Anodizing ■ Product Standard: JIS B 1181 (Body Standard Style 1) ■ Strength Classification: AL6 (Minimum 510 N/mm²) ■ Surface Hardness: HV149 or higher *For more details, please refer to the PDF document or feel free to contact us.

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Stainless steel can generate friction heat during tightening, causing the screw part to expand and potentially leading to the phenomenon of "seizing/binding." To address this issue, our product applies a fluoropolymer resin thoroughly to control the friction coefficient during tightening, thereby preventing the occurrence of seizing in bolt-nut engagements under normal conditions. Compared to domestic products, it offers excellent cost performance and does not reach the level of seizing even under conditions of repeated use up to five times. 【Features】 ■ All units selected from domestic manufacturers ■ Manufacturer's product warranty included (with engraving) ■ Superior cost performance compared to domestic products ■ Does not reach the level of seizing even under conditions of repeated use up to five times *For more details, please refer to the PDF document or feel free to contact us.

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Do you have any concerns regarding screws? 1. High-performance bolts are difficult to procure. Our company offers a diverse stock of high-performance bolts for sale. 2. I want bolts that are resistant to heat and rust. We also handle bolts and coatings that excel in heat and corrosion resistance. Other concerns include… ■ A corrosive environment but cannot compromise on strength. ■ Want to prevent seizing without using lubricants, etc. This document introduces the voices of concerns raised by our customers along with proposals for solutions, case studies, and various screw products. Leave your diverse problems to the screw concierge, Yura Sansho. ★ We will propose screws that suit your needs. If you would like the document, please click the [Download] button! *This is a limited distribution by IPROS!

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We would like to introduce our "DIN7984 Low Head Cap 12.9." Achieving space-saving and lightweight design with "low head" + "high strength 12.9." In addition, we also offer high-strength ultra-low head hexagon socket bolts such as "NS-LOW HEAD Power8" and "Low Head Hexagon Socket Bolt A2-100." 【Specifications】 ■ Material: SCM435 ■ Strength Class: CLASS 12.9 ■ Mechanical Properties: ISO 898/1-13 ■ Thread Accuracy: 5g6g ISO 965/1-13 ■ Surface Treatment: Black Oxide Coating *For more details, please refer to the PDF document or feel free to contact us.

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JIS B1180 Appendix - Incorporation of Spring Washers with Hex Bolts of Strength Class 10.9 The "P-2" spring washer and ISO flat washer "I-3" have introduced "trivalent chromate." This product incorporates spring washers with a hardness of 40-50 HRC and round washers made of S55C into SCM hex bolts, reducing the labor of incorporating spring washers and round washers, preventing forgetfulness in assembly, and making it suitable for use in areas where conventional iron products lack strength. 【Product Specifications (Bolt)】 ■ Strength Class: 10.9 ■ Material: Structural Alloy Steel (SCM) ■ Precision: JIS 6g *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce the "Hexagon Bolt - Hot-Dip Galvanized" handled by Yura Sangyo. Many standard 8.8 hexagon bolts are made from boron steel or SWCH35K, but our product uses "SCM435" and is managed under suitable heat treatment conditions, ensuring a strength of 8.8 even after being treated at high temperatures during the hot-dip galvanization process. Additionally, mill sheets and product inspection certificates (including tensile test results after surface treatment) can be issued for a fee. Please feel free to contact us when needed. [Features] ■ Uses SCM435 ■ HDZ35 ■ 8.8 strength guarantee *For more details, please refer to the PDF materials or feel free to contact us.

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The "SUS CDW" is a serrated hexagonal spring washer. It supports axial force with spring reaction due to its dish spring shape. The wedge-shaped serration effectively suppresses the rotation of loosening. It has a wedge shape that is less likely to damage the joined parts, is made of SUS304 for high heat resistance, and can be used in high-temperature environments. 【Features】 - Supports axial force with spring reaction due to dish spring shape - Effectively suppresses the rotation of loosening with wedge-shaped serration - Wedge shape that is less likely to damage the joined parts - High heat resistance with SUS304, usable in high-temperature environments - Material: S50C to S70C, SUP10; Hardness: 40 to 48 HRC *For more details, please refer to the PDF document or feel free to contact us.

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This product features a small screw with a head height that is approximately 50% lower for Type 1 and about 30% lower for Type 3 compared to the JIS B1111 appendix. We offer a variety of products including "No. 0 Type 1 (+) pan head screws with nickel plating" and "No. 0 Type 1 (+) pan head screws with trivalent chromate plating." All stock items can be shipped in units of 1,000 pieces. Additionally, we can accommodate other sizes, shapes, and surface treatments through made-to-order production. 【Features】 ■ Japanese Camera Industry Association standard (JCIS10-70) ■ All stock items can be shipped in units of 1,000 pieces ■ Other sizes, shapes, and surface treatments can also be accommodated through made-to-order production ■ Material: SWCH16A (aluminum-killed steel) ■ Surface treatment: nickel plating, trivalent chromate plating *For more details, please refer to the PDF document or feel free to contact us.

• Other electronic parts

We would like to introduce the "PEEK products" handled by Yura Sangyo Co., Ltd. Our lineup includes various products such as "(+) pot micro," "(+) small screws," and "hex bolts," as well as "hex nuts and washers." These products excel in heat resistance, fatigue resistance, impact resistance, and creep resistance, and are usable in all chemical environments except concentrated sulfuric acid. They are used in parts for LCD manufacturing equipment, medical devices, cleaning jigs, chemical-related equipment parts, and precision machinery parts. 【Features】 ■ PEEK (Polyether Ether Ketone) ■ Continuous use temperature: 180℃ ■ Highest level of chemical resistance among plastics ■ Excellent heat resistance, fatigue resistance, impact resistance, and creep resistance ■ Does not contain any of the six substances restricted by the ROHS directive *For more details, please refer to the PDF materials or feel free to contact us.

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The "fix-F4(+) Nabebisu/WH" is a screw with a loosening prevention function that achieves weight reduction by eliminating the need for flat washers and spring washers. By removing the resistance type loosening prevention that uses nylon or silicone-based resin, which is more expensive than screws, cost reduction with screws becomes possible. Additionally, it prevents the tilting of screws caused by spring washers and the overlapping of flat washers, which can lead to stoppages in automated lines. 【Features】 ■ Significant cost reduction ■ Reusable ■ Achieves weight reduction by eliminating the need for flat washers and spring washers ■ No need for incomplete screw parts due to the thickness of the assembly ■ Prevents stoppages in automated lines *For more details, please refer to the PDF document or feel free to contact us.

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This product is a flat washer with a hardness classification of 300HV. It prevents the nut or bolt head from sinking into the joined material. It can be used when the hole diameter is larger than the bolt diameter or to stabilize the seating surface. It meets needs with a mill certificate and inspection report. The material used is S45C to S55C (domestic material), and it has undergone bright hardening and tempering heat treatment. 【Features】 ■ JIS B1256:2008 ■ Standard shape / Component grade A ■ Marked with engraving ■ Hardness classification of 300HV ■ Comes with a mill certificate and inspection report *For more details, please refer to the PDF document or feel free to contact us.

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Yura Sangyo Co., Ltd. is a comprehensive wholesale distributor of screws and fastening components, headquartered in Tachiuri-bori, Nishi Ward, Osaka City, which has long been known as a town of steel product wholesalers. In response to the increasing sophistication of demands, we aim to contribute further to our customers by not only functioning as a "wholesaler" that supplies products just-in-time, stored like a dam, but also by developing and selling high-strength and high-function fasteners as a "technical trading company" that solves the problems faced by our customers. Additionally, in our Aerospace Division, we have successfully entered the aircraft industry. Our company views the commonplace item "screw" as a "critical safety component" that requires high quality assurance and low environmental impact, and we promise to contribute to our customers and society through high-quality screw products. 【Business Activities】 ■ Comprehensive wholesale sales of fastening components such as bolts and nuts *For more details, please refer to the PDF materials or feel free to contact us.

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The "A2-100" is a low-head hex socket bolt made from high-strength stainless steel (SUS304CUN). While improving strength, which is important when considering compactness and lightweight design, the head is kept low to achieve space-saving. It is common for stainless steel low-head bolts to have no strength guarantee equivalent to A2-50, but this product guarantees a tensile strength of 1,000 N/mm². 【Features】 ■ Enables high strength and lightweight design ■ Achieves space-saving with a low head ■ Can replace SCM products ■ Strength guarantee *For more details, please refer to the PDF document or feel free to contact us.

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Yura Sangyo Co., Ltd.'s Special Sales Department handles 'No. 0 small screws' for precision equipment, commonly referred to as "camera screws" and "precision screws." These are small screws with a pan head height that is approximately 50% lower for Type 1 and about 30% lower for Type 3 compared to the JIS B1111 appendix. All stock items can be shipped in units of 1,000 pieces. Sizes, shapes, and surface treatments can also be customized to order. 【Features】 ■ Material: SWCH16A (aluminum killed steel) ■ Surface treatment: Nickel plating / Trivalent chromate plating ■ All stock items can be shipped in units of 1,000 pieces ■ Sizes, shapes, and surface treatments can also be customized to order *For more details, please refer to the PDF document or feel free to contact us.

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The "NS-LOW HEAD Power8" is a high-strength hexagon socket bolt with an extremely low head design that achieves a strength classification equivalent to 8.8, significantly surpassing the conventional strength classifications of 4.8/5.8. It offers substantial weight reduction compared to JIS standard products. It is also suitable for areas where there is no clearance or where a cross hole is not desired for design reasons. 【Features】 ■ Achieves a strength classification equivalent to 8.8 with an extremely low head design ■ Significant weight reduction compared to JIS standard products ■ Ideal for areas without clearance or where a cross hole is not preferred for design *For more details, please refer to the PDF document or feel free to contact us.

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While meeting the "AL6" standard for the mechanical properties of non-metallic screw components according to JIS B 1057, the adoption of high-strength aluminum alloy "DK50" for automotive use, along with advanced forming technology for cold forging and the implementation of special heat treatment to address stress corrosion cracking, has achieved "tensile strength of 600 N/mm² and yield strength of 500 N/mm²."

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Our product, boasting unparalleled strength, high ductility, and excellent corrosion resistance, is an ideal choice for demanding applications.

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Do you have any concerns regarding screws? 1. High-performance bolts are difficult to procure. Our company offers a diverse stock of high-performance bolts for sale. 2. I want bolts that are resistant to heat and rust. We also handle bolts and coatings that excel in heat and corrosion resistance. Other issues include… ■ A corrosive environment but cannot compromise on strength. ■ I want to prevent seizing without using lubricants, etc. This document introduces the voices of concerns raised by our customers along with proposals for solutions, case studies, and various screw products. Please leave your diverse problems to the screw concierge, Yura Sansho. ★ We will propose screws that suit your needs. If you would like the document, please click the [Download] button! *This is a distribution exclusive to IPROS!

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Do you have any concerns regarding screws like these? 1. High-performance bolts are difficult to procure. Our company offers a diverse stock of high-performance bolts for sale. 2. I want bolts that are resistant to heat and rust. We also handle bolts with excellent heat and corrosion resistance. We can also solve the following issues! ● I can't reduce strength in a corrosive environment. ● I want to prevent seizing without using lubricants. ● The bolt broke. It cracked. etc.... In this document, we have gathered voices of concerns from our customers along with proposals for solutions, case studies, and various screws. Please leave your diverse problems to "Screw Concierge - Yura San Sho." ■ We will propose screws that fit your needs. ------------------------------------------------------------ If you are interested, please click the [Download] button! *This is an IPROS exclusive distribution! ------------------------------------------------------------ ↓ ↓ ↓

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"Do you have any concerns or troubles with screws?" Strength, corrosion resistance, heat resistance, loosening, delivery time... In this document, we have gathered proposals and case studies for solutions based on the voices of our customers' concerns. There are many problems that can be solved with the right product selection. ◆Examples of Concerns◆ - High-strength bolts that are outside standard specifications are difficult to procure. - I want bolts that won't seize without using plating or coating. - It's a corrosive environment, but I can't compromise on strength. - The bolt broke. It cracked. - The screw is seizing up. It's burning. - Even though I tightened it with the correct torque, it still loosened. Please leave it to the experts!

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The "anti-seizing nut" is a nut made of stainless steel that has been treated with a multi-layer coating (YK coat) to prevent seizing. Thanks to the high adhesion of the coating, it is difficult to peel off, and the anti-seizing effect remains even after repeating tightening tests eight times. With a dry finish, there is no dripping like when using lubricating oil, and no application time is required.

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Do you have any troubles with screws? Strength, corrosion resistance, heat resistance, loosening, procurement, delivery time... In this document, we have gathered voices of concerns from customers along with proposals for solutions, case studies, and various types of screws. Even though we refer to screws in general, there are various shapes, materials, and surface treatments. To maximize the inherent strength of screws, it is important to select the correct products and adhere to proper usage methods. The latest version (Rev6) includes a case study on non-seizing nuts, "Yaki-tsuka nuts"! Leave the diverse range of problems to "Screw Concierge - Yura Sansho"!! ■ We will propose screws that fit your environment! ------------------------------------------------------------ If you are interested, please click the [Download] button!! *This is a limited distribution on IPROS!! ------------------------------------------------------------ ↓ ↓ ↓

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Fluoropolymer (Teflon resin) possesses particularly outstanding properties among various plastics. It is extremely excellent in heat resistance, chemical resistance, and electrical insulation, and also has non-stick and low wear characteristics. Due to its excellent properties, it is utilized in a wide range of fields including chemistry, electronics, machinery, and space development.

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Characteristics 1. Improvement for the risk of delayed fracture 2. Improvement of fatigue resistance for extension in service life 3. Realization of compact design by size down 4. Improvement of tightening force for loosening prevention

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┏━━━━━━━━━━━━━━━━━━━━━━━━━━ ■ High-Strength Stainless Fastener SUS304CUN □ A2-90・100 Tensile Strength 900N/mm²・1000N/mm² ┗━━━━━━━━━━━━━━━━━━━━━━━━━━ This is a pure domestically produced high-strength stainless fastener made from the next-generation stainless steel "SUS304CUN" developed by Daido Steel Co., Ltd. By changing from the conventional A2-50 to A2-90, we can achieve overall weight reduction and miniaturization. By dropping two sizes, a weight reduction and miniaturization of 70% is possible. Of course, if you want bolts that are resistant to rust and magnetism... We can meet such requests!! ★ We also accept various technical consultations! It will be smoother if you mention "I saw it on Ipros." ━…━…━…━…━…━…━…━…━…━…━…━…━…━…━ Yura Sansho Co., Ltd. Special Sales Department TEL: 06-6532-1331 / Email: tokuhan@yura-sansyo.co.jp ━…━…━…━…━…━…━…━…━…━…━…━…━…━…━

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A jointly developed product with the top-tier manufacturer, Kyokuto Seisakusho Co., Ltd., known for its high technical capabilities. A hexagon socket bolt boasting an ultra-high strength of "14.9". Utilizing high-strength steel with excellent "delayed fracture characteristics," it achieves a tensile strength of 1,400 N/mm² while realizing an elongation of over 9%. The adoption of aerospace-grade "MJ screws" enhances fatigue resistance. "Ultra-strength" solves issues in maintenance. *For details, please contact us or download the PDF.

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"I wanted a bolt like this." In response to our customers' strong demand, we developed an "ultra high strength" 14.9 hex socket bolt that exceeds standard specifications. To provide this ultra high strength bolt with high corrosion resistance, we adopted the "Delta Protect Coat." This remarkable product boasts a tensile strength of 1,400 N/mm² while exceeding 2,000 hours of salt spray resistance.

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Characteristics of Stainless High-Tension Bolts ☆ Durability and Corrosion Resistance ☆ Aesthetic Design ☆ Fire Resistance and Low-Temperature Properties ☆ Mechanical properties are equivalent to JIS B 1186 high-strength hex bolts F10T for friction joints.

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"I wanted a bolt like this!" In response to our customers' strong demand, we have developed an "ultra-high strength" 14.9 hex socket bolt that exceeds standard specifications. This "ultra-high strength" 14.9 hex socket bolt boasts a tensile strength of 1,400 N/mm² while achieving over 9% elongation. It is a high-spec bolt that combines high strength with toughness. Are you thinking that such high-spec bolts are hard to obtain? We have started to handle this product as a standard stock item. Solve all your screw-related problems with "ultra-high strength"! We offer samples!! Please let us know your specific concerns!!! *We also have the "ultra-high strength" 14.9 hex socket bolt with Delta Protect, which has high corrosion resistance.

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A joint development product with the top-tier manufacturer, Kyokuto Seisakusho Co., Ltd., known for its high technical capabilities. A groundbreaking product featuring a thin-film anti-corrosion coating called "Delta Protect" applied to a "14.9" hex socket bolt has been introduced! The "Ultra-High Strength 14.9 Hex Socket Bolt" is a revolutionary fastening component that meets the high-strength needs of a diversifying market, equipped with features such as compact design and suitability for use in high-temperature environments.

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We exhibited at the "19th Mechanical Components Technology Exhibition" held recently at Tokyo Big Sight. In response to your requests, we would like to introduce the exhibition scenery and the products we showcased.

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The "Ultra High Strength 14.9 Hex Socket Bolt" is a groundbreaking fastening component that features compact design and compatibility for use in high-temperature environments, meeting the high-strength needs of a diversifying market. ■Material: KNDS4 ■Tensile Strength: 1,400N/mm² ■Strength Class: 14.9 ■Hardness: HRC44–50 ■Elongation: Maintains the same mechanical properties of 9% as strength class 10.9

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We exhibited at the "18th Mechanical Components Technology Exhibition" held recently at Tokyo Big Sight. In response to your requests, we will introduce the exhibition scenery and the products we showcased.

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Leave it to us for plastic screw products made from resin. We can accommodate individual orders, so you can use them for prototypes and more. Five features of plastic screws: 【Lightweight】 They are about 1/5 to 1/6 the weight of metal due to their low specific gravity. 【Corrosion-resistant】 They have excellent corrosion resistance, so there is no worry about rust or corrosion. 【Insulating】 They have low thermal conductivity and excellent insulation properties. 【Electrical insulation】 They have high electrical resistance and excellent insulating properties. 【Non-magnetic】 They do not acquire magnetic properties. Our company offers a wide variety of plastic screws. ------------------------------------------------------------ If you would like documentation, please click the [Download] button! ------------------------------------------------------------ 　　　↓　　↓　　↓

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High-strength fasteners made of stainless steel efficiently convert high input into spring action without waste, and reliably suppress loosening caused by initial settling or vibrations after fastening. They have high heat resistance and can be used in high-temperature environments of 350 to 370°C. Compared to conventional spring steel products, they can be used with confidence even in harsh environments where corrosion resistance is required.

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I wonder what materials are available for resin (plastic) screws. We have compiled data on material properties such as tensile strength, heat resistance, and chemical resistance for comparison in a catalog. We have a large stock available, so please feel free to inquire.

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World's bestsellers "PEM Self-Clinching Nut" "PEM Flush Head Stud" "PEM Floating Nut" to compensate for installation position misalignment We handle many other PEM products as well. Please check the catalog for stock sizes and product details. ↓　　↓　　↓　　↓　　↓　　↓

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PEEK is a super engineering plastic with the highest level of semi-crystalline performance. It has the highest level of chemical resistance among engineering plastics, and the only common chemical that can dissolve PEEK is concentrated sulfuric acid. It also excels in heat resistance, wear resistance, flame retardancy, and hydrolysis resistance.

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■◇Rare Metal Products Further Enhanced◇■ Stock Materials - ALLOY600/601/625 (Equivalent to Inconel) - ALLOY22/276/X-750 (Equivalent to Hastelloy) Stock Products - Hexagon socket bolts - Hexagon bolts - Hexagon nuts - Flat washers - Spring washers *Inconel is a registered trademark of Special Metal Corporation. *Hastelloy is a registered trademark of Haynes International, Inc.

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Next-generation stainless steel fastener "SUS304CUN" What is the difference from regular stainless steel? Where can it be used? This is a Q&A collection summarizing various questions and inquiries. ------------------------------------------------------------ Currently offering free materials If you are interested, please click the [Download] button!! ------------------------------------------------------------ ↓ ↓ ↓

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Amazing specifications boasting a maximum tensile strength of 900N/mm²!! The secret to its strength lies in work hardening!! The next-generation high-strength stainless steel fastener "SUS 304 CUN" series now includes cut bolts. (We also offer hex bolts, hex socket bolts, nuts, and washers.) Please consider it for environments such as construction and plants where strength and corrosion resistance are required. For product details, adoption records, and inventory range, please download the catalog to view.

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□■Long Screws (Cut Length) Bolts Stock Range■□ 【Material】Iron (Raw, Chromate, Unichrome) S45C, Stainless Steel, Brass, Polycarbonate, Titanium, Lenny, etc... 【Size】M3 to M48 *Varies by material. 【Length】Up to 2,000mm *Varies by material. *Please also request other dimensions.

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┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ■ Achieving high specifications, ease of use, and beauty ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━ An astonishing specification boasting a maximum A2-100 high strength!! Next-generation high-strength stainless steel fastener "SUS 304CUN". - A2-90 Hex Bolt - A2-100 Hex Socket Bolt - A2-100 High Tension Nut - HV300 High Tension Washer (SUS304N2) ■ Seven Features 1) High Strength → Tensile strength 900–1,000N/㎟ 2) Unhardened → Achieved strength increase through cold forming only 3) High Heat Resistance → No carbon precipitation occurs at 500–700℃ (Recommended 500℃) 4) High Corrosion Resistance → Stress corrosion cracking properties almost equivalent to SUS316L 5) Non-Magnetic → Permeability is 1.01μ–1.03μ 6) Lightweight → Due to high strength (yield) characteristics 7) Domestic Product → Immediate delivery / mass production / custom orders available ★ For details and adoption results, please download and view the catalog.

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