八幡ねじ List of Products and Services

The Full Lock Screw is a washer-integrated screw designed for fastening ultra-thin plates. Typical washer-integrated screws have an incomplete threaded section of about 2 pitches, which prevents thin plates from being securely tightened. However, the Full Lock Screw has no incomplete threaded section, allowing it to securely tighten even the thinnest materials. It is compatible with sizes from M2.5 to M6. 【Features】 - The screw's shaft diameter is smaller than the inner diameter of the nut, allowing for fastening to thin plates without contacting the nut. - It can be completely fastened even to products without fastening elements, such as terminal blocks. For more details, please contact us or download the catalog.

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The "Nortlock Washer" is a locking device that utilizes tension from a combination of wedge-shaped cams. When the nut attempts to rotate, only the inner cam surface moves. However, because the angle of the inner cam is greater than the lead angle of the screw, it becomes difficult to overcome the cam, preventing loosening (backing off). 【Features】 - Excellent corrosion resistance: Steel: SC material with Delta Protect treatment; Stainless steel: SUS316 is used. - Easy to install and remove, and can be reused. For more details, please contact us or download the catalog.

• Other machine elements

"Delta PT" is a tapping screw for resin developed by the German company EJOT. The screw threads and valleys have a special shape, allowing for smooth deformation of the female threads when screwed into the resin, which helps reduce damage to the resin. 【Features】 ○ Reusable ○ Easy to insert and resistant to loosening ○ Cost reduction For more details, please contact us or download the catalog.

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The tapping screw "Shinka" can be used in various industries aiming for weight reduction and significantly contributes to enhancing Japan's manufacturing competitiveness. It enables fastening to thin steel plates of 0.3 to 0.6 mm due to its high break torque and return torque. 【Features】 ○ Capable of fastening to thin plates (0.3 to 0.6 mm) ○ Reduced working time ○ Cost reduction For more details, please contact us or download the catalog.

• bolt

The "wedge nut" is a powerful anti-loosening nut that utilizes an asymmetrical thread profile. Its unique valley shape exhibits a wedging effect, firmly locking the bolt in place, providing a high anti-loosening effect. It can be easily inserted by hand, and like a standard nut, it does not provide resistance until it is seated, resulting in excellent workability. Additionally, it is offered at an easy-to-introduce price due to its simple manufacturing process. 【Features】 ■ Strong locking effect ■ High workability ■ Passed NAS vibration tests ■ Cost advantages ■ NETIS registered product (Registration number: CB-170024-A) *For more details, please refer to the PDF document or feel free to contact us.

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"TB Coat" is an insulation coating that prevents heat transfer through its components, improving thermal insulation. Due to its excellent insulation properties, the surface of the coating does not become hot compared to heat-reflective paints alone. 【Features】 ○ High thermal insulation ○ Improved corrosion resistance ○ High heat resistance For more details, please contact us or download the catalog.

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SG plating is a molten zinc alloy plating system consisting of 5% aluminum and 1% magnesium. It is an alloy based on zinc, developed with technical support from Mitsui Mining & Smelting under the name "Super Galva," and has incorporated unique technologies from Kowa Industrial for over 20 years. While zinc-based alloys with approximately 5% aluminum have been commercialized in the steel sheet sector by blast furnace manufacturers, with JIS standards established, such plating is often technically challenging in the general molten zinc plating field, and this type of plating is rarely performed. Furthermore, there are no other facilities boasting a production capacity of 3,000 tons/month with an 8-meter large kettle for alloy plating. SG plating has a proven track record in harsh environments prone to corrosion from salt damage, such as coastal areas and heavy snowfall regions. Recently, in collaboration with Nippon Steel, we have successfully developed high corrosion-resistant steel pipes. By combining Nippon Steel's "Strong Seam," which has a proven track record as a well-processable steel pipe, with SG plating, we have achieved steel pipes that excel in corrosion resistance and processability. 【Features】 - Exceptional corrosion resistance - Excellent as a base for painting - Powerful enough to handle large-scale production - Environmentally friendly surface treatment For more details, please contact us or download the catalog.

• Surface treatment contract service

The "LH Bolt" is a bolt formed using LH steel wire through cold forging processing. Yahata Screw has established a system for immediate delivery of approximately 100,000 types of fastening components used in various fields such as automotive, machinery, electronics, medical, and construction. Additionally, we collaborate with our own manufacturing and partner manufacturers to provide the best "product lineup," "high quality," "low prices," and "reliable delivery times" that meet our customers' needs for special items in cold heading and machining. 【Features】 ○ Reduction of hardening and tempering processes is possible ○ The flow of forged fibers is equivalent to spheroidized annealed material For more details, please contact us or download the catalog.

• bolt

KSG plating is a zinc-tin alloy plating. We have been developing it independently for over 20 years, repeatedly improving it to complete the current method. While there are alloy platings that include tin in the field of electroplating, the molten tin alloy is a technology handled only by Kowa Industrial. Additionally, by adopting a centrifugal method, it prevents accumulation and enables the reduction of subsequent processes, achieving high quality at low cost. 【Features】 - Corrosion resistance is almost equivalent to that of molten zinc plating and is relatively strong in acidic environments. - Salt damage resistance is superior to that of molten zinc plating. For more details, please contact us or download the catalog.

• Surface treatment contract service

This is a stainless steel fastener with four times the strength of SUS304 and twice the strength of SUS316. It is a bolt with excellent corrosion resistance, heat resistance, impact resistance, non-magnetic properties, and anti-seizing characteristics. Its strength classification is equivalent to iron grades 8.8 and 10.9, and it is used for fastening vacuum containers where corrosion due to gas is a concern.

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The LC insert nut has achieved process shortening, zero defective products, and significant cost reduction, which traditionally required finishing with at least two machining processes. (The LC insert nut is an insert nut made through pressing.)

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Strong against halogen gases such as fluorinated gases! ● Excellent corrosion resistance and abrasion resistance with chromium nitride coatings! ● Resistant to chemicals and corrosive gases! Main Features - Low-temperature coating is possible (100℃ to 250℃) - Coating surface is smooth - Strong against halogen gases such as chlorine and fluorine - Excellent release properties against resins - Possible from ultra-thin films to thick films (up to 10μm)

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