Last Updated： Aggregation Period:Aug 27, 2025～Sep 23, 2025
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High Strength Bolt, Nut, Washer
Construction high-strength bolts, nuts, washers - 20,000 tons/year production capacity HIGH STRENGTH BOLT, NUT, WASHER TORQUE SHEAR BOLT, NUT, WASHER HEX CAP SCREW (CLASS 4.6, 8.8, 10.9, 12.9) HEX NUT (CLASS 8, 10, 12) Heavy-duty truck bolts, nuts - 10,000 tons/year production capacity
Looks authentic too! Washers used when tightening nuts and bolts.
The "Washer Black Zinc Plated" from Ōri is a component you want to use when tightening nuts and bolts on materials like wood. It also gives a more professional appearance. 【Features】 ■ Washer used when tightening nuts and bolts ■ Looks professional! *For more details, please feel free to contact us.
The wedge-shaped teeth effectively suppress the rotation of looseness! Available for light and heavy loads.
The "SUS CDW" is a serrated hexagonal spring washer. Its dish spring shape supports axial force through spring reaction. The wedge-shaped serration effectively suppresses the rotation of loosening. It has a wedge shape that is less likely to damage the joined components, and it is made of SUS304, which has high heat resistance, making it usable even in high-temperature environments. 【Features】 ■ Supports axial force through spring reaction with a dish spring shape ■ Effectively suppresses the rotation of loosening with wedge-shaped serration ■ Wedge shape that is less likely to damage the joined components ■ 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.
Safety, no special tools required, maintenance and inspection possible! Sizes available from M3 to M42.
The "NORD-LOCK washer" is a loosening prevention washer that secures bolts using tension rather than friction resistance. This system consists of a pair of washers, one with a cam surface and the other with a radial rib surface. The angle of the cam (α) is designed to be larger than the lead angle of the screw (β), making it difficult to easily overcome the cam. This creates a wedging effect between the cam surfaces, preventing loosening of the bolt due to rotation. 【Features】 ■ Prevents loosening caused by intense vibrations and fluctuating loads, ensuring safe fastening. ■ Can be quickly and easily installed and removed with standard tools. *For more details, please refer to the PDF document or feel free to contact us.
Lock nuts are 100% tested for flaws! Introducing the lock nut and washer set.
The "Nut・Washer" is a set of lock nuts and washers that have been treated with a zinc plating on the surface. The lock nuts comply with DIN980-V (ISO7042), and the washers comply with DIN125 or DIN6916 (EN14399-T6). We also offer the flange nut "Collar Nut," which has been 100% tested for flaws. 【Features of DIN Lock Nut and Washer Set】 ■ Lock Nut: Complies with DIN980-V (ISO7042) ■ Washer: Complies with DIN125 or DIN6916 (EN14399-T6) ■ Lock Nut: 100% tested for flaws ■ Surface treated with zinc plating *For more details, please refer to the PDF document or feel free to contact us.
Material uses S45C to S55C (domestic material)! It is recommended to combine with screw part strength classification 10.9.
We would like to introduce the "Flat Washer 300HV" handled by Sanwa Ai. It prevents the nut or bolt head from sinking into the joined material. When the hole diameter is larger than the bolt diameter, it can be used to stabilize the seating surface. The material used is S45C to S55C (domestic material), and it undergoes bright quenching and tempering heat treatment. 【Features】 ■ JIS B 1256:2008 ■ Recommended for use in combination with screw part strength classification 10.9 (JIS B 1061:2020) ■ Marked with hardness classification 300HV ■ Can provide mill sheets and inspection certificates *For more details, please refer to the PDF materials or feel free to contact us.
Marked with a hardness classification of 300HV! It is recommended to combine with screw component strength classification 10.9.
We handle the "Flat Washer 300HV" to avoid the risk of sinking during bolt fastening. This product prevents sinking of the bolt seating surface, which is a cause of loosening of bolts and nuts, and can be used to stabilize the seating surface when the hole diameter is larger than the bolt diameter. The material used is S45C to S55C (domestic material), and it undergoes bright hardening and tempering heat treatment. 【Features】 ■ JIS B 1256:2008 ■ Recommended for combination with screw part strength classification 10.9 (JIS B 1061:2020) ■ Marked with hardness classification 300HV ■ Can provide mill sheets and inspection certificates *For more details, please refer to the PDF document or feel free to contact us.
Mill sheet and inspection certificate are also available! Prevents the nuts and bolt heads from sinking into the joined materials.
Introducing the "Flat Washer 300HV" available at Sanwa Ai. Prevents the nut or bolt head from sinking into the joined material. When the hole diameter is larger than the bolt diameter, it can be used to stabilize the seating surface. Additionally, it has undergone quenching and tempering heat treatment. Please feel free to contact us when you need it. 【Features】 ■ JIS B 1256:2008 ■ Recommended for use with screw parts strength classification 10.9 (JIS B 1061:2020) ■ Material: S45C to S55C (domestic material) ■ Marked with hardness classification 300HV ■ Mill sheet and inspection certificate available *For more details, please refer to the PDF document or feel free to contact us.
We can accommodate even very small lots! Orders placed by 2 PM will be shipped the same day! Introduction of washers.
This is an introduction to the "washers" available on the online store "Niji Super Dot Com" of Yamamoto Tech Co., Ltd. Our products can be selected from materials such as iron, brass, stainless steel, bronze, aluminum, copper, S45C, titanium, SUS316, SUS316L, and SUS310S. For iron, you can choose from various surface treatments including the raw material (uncoated), chromate, nickel, and more. Additionally, surface treatments tailored to various materials are available. For information on materials and prices, please refer to "Niji Super Dot Com." 【Available Materials】 ■ Iron ■ Brass ■ Stainless Steel ■ Bronze ■ Aluminum ■ Copper, etc. *For more details, please feel free to contact us.
Easy visual confirmation of tightening! Responds to loosening due to wood shrinkage and other factors.
The "NRT Washer II" is a spring-function washer used for M12 bolt and nut fastening locations. It is a certified product by the Building Materials Testing Center, with a short-term allowable embedment resistance of 10.0 kN for coniferous trees, 8.6 kN for hinoki trees, and 6.7 kN for cedar trees, which is equivalent to or greater than the Z corner washer 4.5×40. Additionally, it is easy to confirm the fastening just by visually checking if the seating surface is flush. 【Features】 ■ Thin and lightweight ■ Prevents loosening with spring function and raised seating surface cut ■ Easy fastening confirmation *For more details, please refer to the catalog or feel free to contact us.
For preventing loosening of high-strength stainless steel!
High-strength fasteners made of stainless steel convert high input into spring action without waste, effectively preventing 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 safely used in harsh environments where corrosion resistance is required.
A new rust-resistant type of Titanik that is strong against rust has arrived! It can now be used for outdoor equipment and structures!
Features of Rust-Resistant Type Taitonic This is a new type of Taitonic that inherits the excellent performance of "not loosening" and "following" from previous models, and has been finished with rust-resistant treatment. It is strong against vibrations and can withstand significant forces with low torque tightening. The magic ring utilizes the principle of a wedge to tighten the bolts, providing a powerful anti-loosening effect. It does not loosen even with the aging shrinkage of materials like wood. The Taitonic with rust-resistant treatment features a completely chrome-free plating process that is environmentally friendly. 【Features】 ■ Suitable for outdoor use ■ Tightens in response to wood shrinkage ■ Converts vibrations into tightening force with the magic ring ■ Withstands significant forces with low torque tightening 【Outdoor Applications】 Fixing outdoor benches and louvers Securing connections in outdoor facilities Fixing equipment installed outdoors that generates vibrations Securing connections that undergo aging shrinkage 【Other Applications】 - Benches and fences (vibration suppression/fixing) - Structures exposed to rain (fixing joints) - Livestock facilities (fixing joints in cow and pig barns, etc.) - Playground equipment (fixing tightening hardware) *For more details, please feel free to contact us.
