We have compiled a list of manufacturers, distributors, product information, reference prices, and rankings for Washer.
ipros is IPROS GMS ・ IPROS One of the largest technical database sites in Japan that collects information on.

Washer(20) - List of Manufacturers, Suppliers, Companies and Products

Last Updated： Aggregation Period:Aug 06, 2025～Sep 02, 2025
This ranking is based on the number of page views on our site.

Washer Product List

1～15 item / All 15 items

Displayed results
Seal washer <compatible with water, oil, and air>

Seal washer <compatible with water, oil, and air>

For preventing gas and liquid leaks! A washer that is compatible with water, oil, and air, capable of withstanding 200 atmospheres (20 MPa).

At Sanwa Ai, we handle "Seal Washers." This is a set product that incorporates a rubber packing into a metal-formed bowl-shaped washer. The rubber packing is press-fitted onto the threaded part of the bolt, sealing the fluid at the side. Additionally, this product has passed a pressure test of 200 atmospheres (20 MPa). Please feel free to contact us when you need assistance. 【Features】 ■ Suitable for preventing gas and liquid leakage ■ Passed a pressure test of 200 atmospheres (20 MPa) ■ Demonstrates sufficient performance even when used directly on the surfaces of black steel and cast iron ■ Vibration damping and soundproofing effects ■ The metal and rubber packing do not resonate with vibrations *For more details, please refer to the PDF document or feel free to contact us.

  • nut

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration
High strength bolt, nut, washer

High strength bolt, nut, washer

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

  • bolt
  • nut

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration
Seal washer <capable of sealing fluids strongly>

Seal washer <capable of sealing fluids strongly>

Introducing a washer that deeply embeds the rubber packing into the threaded part of the bolt, providing a strong seal for fluids!

At Sanwa Ai, we handle "seal washers." This is a set product that incorporates a rubber packing into a metal-formed bowl-shaped washer. The rubber packing is press-fitted onto the threaded part of the bolt, sealing the fluid at the side. We use SUS304, which is resistant to rust, as the standard material, and we offer packings made of NBR (standard specification), silicone, fluororubber, and EPDM. 【Features】 ■ Suitable for preventing gas and liquid leakage ■ Passed pressure tests of 200 atmospheres (20 MPa) ■ Provides sufficient performance even when used directly on the surfaces of black steel and cast iron ■ Vibration damping and sound insulation effects ■ The metal and rubber packing do not resonate with vibrations *For more details, please refer to the PDF materials or feel free to contact us.

  • nut

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration
Seal washer <Prevention of gas and liquid leakage>

Seal washer <Prevention of gas and liquid leakage>

The design makes it difficult for the rubber to protrude even when tightening to the proper torque! It seals the fluid at the sides.

At Sanwa Ai, we handle "seal washers." This is a set product that incorporates a rubber packing into a metal-drawn bowl-shaped washer. The rubber packing is press-fitted onto the threaded part of the bolt, sealing the fluid at the side. Designed to minimize rubber overflow even under proper torque tightening, we use SUS304, which is resistant to rust, as the standard material. The packing options available are NBR (standard specification), silicone, fluororubber, and EPDM. 【Features】 - Suitable for preventing gas and liquid leakage - Passed pressure test of 200 atmospheres (20 MPa) - Demonstrates sufficient performance even when used directly on the surface of black steel and cast iron - Vibration damping and noise reduction effects - Metal and rubber packing do not resonate with vibrations *For more details, please refer to the PDF materials or feel free to contact us.

  • nut

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration
Seal washer

Seal washer

Expect vibration damping and noise reduction effects! It demonstrates sufficient performance even when used directly on the surfaces of black steel and cast iron.

We handle "seal washers." This is a set product that incorporates a rubber packing into a metal-drawn bowl-shaped washer. The rubber packing is press-fitted onto the threaded part of the bolt, sealing the fluid at the side. The design minimizes rubber overflow even when tightened to the appropriate torque. We use SUS304, which is resistant to rust, as the standard material. 【Features】 ■ Suitable for preventing gas and liquid leakage ■ Passed pressure tests up to 200 atmospheres (20 MPa) ■ Demonstrates sufficient performance even when used directly on the surface of black steel and cast iron ■ Vibration damping and noise reduction effects ■ The metal and rubber packing do not resonate with vibrations *For more details, please refer to the PDF materials or feel free to contact us.

  • nut

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration
Flat seat gold 300HV <JIS B 1256:2008 standard>

Flat seat gold 300HV <JIS B 1256:2008 standard>

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 combination with screw part strength classification 10.9 (JIS B 1061:2020) ■ Marked with hardness classification 300HV ■ Compatible with mill sheets and inspection certificates *For more details, please refer to the PDF document or feel free to contact us.

  • Other machine elements

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration
Flat seat gold 300HV

Flat seat gold 300HV

Mill sheets and inspection certificates are also available! Prevents nuts and bolt heads from sinking into the joined materials.

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. 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 combination with screw part 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.

  • Other machine elements

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration
Round washer, spring washer

Round washer, spring washer

We are committed to speed and quality to meet your needs! Introducing products from our partner factories at Taiyo Fastener.

Our company is a specialized manufacturer of stainless steel screws with a constant inventory of over 10,000 items. Since our establishment in 1972, we have focused on speed and quality, continuing to manufacture primarily stainless steel fasteners. "Round Washers" and "Spring Washers" are produced by our partner factories, with "Round Washers" available in various sizes from M2 to M20, including JIS small and ISO small, and "Spring Washers" available in JIS No. 2 sizes from M2 to M20. By integrating our headquarters' functions for collecting, managing, and analyzing market needs and purchasing information with the manufacturing power of our Tokushima factory, which produces up to 100 million stainless steel screws per month, we can meet a wide range of needs from standard products to processed stainless steel products. 【Standard Inventory Sizes】 ■ Round Washers: Old JIS, JIS small, ISO, ISO small, various sizes from M2 to M20 ■ Spring Washers: JIS No. 2 sizes from M2 to M20 *For more details, please refer to the PDF materials or feel free to contact us.

  • Other machine elements

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration
Flat seat gold 300HV <Avoiding the risk of sinking during bolt fastening>

Flat seat gold 300HV <Avoiding the risk of sinking during bolt fastening>

Marked with a hardness classification of 300HV! It is recommended to combine with screw component strength classification 10.9.

We offer 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 use with screw part strength classification 10.9 (JIS B 1061:2020) ■ Marked with hardness classification 300HV ■ Compatible with mill sheets and inspection certificates *For more details, please refer to the PDF document or feel free to contact us.

  • Other machine elements

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration
Spring washer, SW No. 2, No. 3 for individual use and for assembly use.

Spring washer, SW No. 2, No. 3 for individual use and for assembly use.

Initial loosening prevention for screw fastening parts: spring washers, SW No. 2, No. 3, equivalent to JIS B1251. Please consult us for custom sizes.

SW No. 2 and No. 3, produced in-house with domestic materials. Spring washers manufactured at the latest smart factory, Mita Plant, which started operations in 2015. Spring washers - SW No. 2 and No. 3, equivalent to JIS B1251. Custom sizes are also available upon request. *For more details, please refer to the catalog or feel free to contact us.*

  • Spring
  • Axle parts
  • Other Auto Parts

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration
Water leak prevention washer

Water leak prevention washer

Strongly bonded with metal and rubber through vulcanization! Sizes available from M1 to M20.

In fastening, there are many cases where the flexibility and adhesion of rubber are utilized to provide sealing or cushioning functions. However, since rubber alone cannot maintain strength, backup and holding power from metal washers are necessary, which affects cost performance. The "Leak-Proof Washer" has a strong adhesive force due to the vulcanized bonding of metal and rubber, resulting in minimal rubber escape during fastening. This prevents rubber from being caught in the threaded part, maintaining high sealing performance, as well as providing various functions such as vibration resistance, loosening prevention, shock absorption, surface scratch prevention, and insulation. Additionally, in relation to this product, Azuma Screw also offers "Leak-Proof Screws (Nuts)." 【Features】 ■ Strong adhesion of metal and rubber through vulcanized bonding ■ Material: Metal part (stainless steel), rubber part (neoprene, EPDM, etc.) ■ Size: M1 to M20 *For more details, please refer to the PDF document or feel free to contact us.

  • bolt
  • nut

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration
Dish spring washer

Dish spring washer

A product with superior anti-loosening effects compared to spring washers and toothed washers.

We handle "disc springs" that can evenly support the axial force of bolts on the seating surface due to their axisymmetric shape, preventing bending moments from acting on the bolts. We offer disc springs of Type 1 and Type 2 in accordance with JIS standards (JIS B 1251:2001), as well as our original SDW (for general bolts) and CDW (for hexagon socket bolts). 【Materials Used】 ■ S50C to S70C ■ SUP10 ■ SUS304 *For more details, please download the PDF or contact us.

  • Other metal materials

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration
Flat seat gold 300HV

Flat seat gold 300HV

We respond to needs with mill sheets and inspection certificates! Please consider our proposal when estimating drawings with specification requirements.

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.

  • 2020-12-23_09h46_30.png
  • Other machine elements

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration
Slack Prevention Bolt, Nut, Washer 'ActiveX'

Slack Prevention Bolt, Nut, Washer 'ActiveX'

Achieves a skirt shape that does not sag. It is reusable and can also reduce costs.

"ActiveX" is a bolt, nut, and washer that realizes high anti-loosening functionality with a simple shape, based on the concept of "absorbing the force that loosens screws." The spring effect generated by the elastic deformation of the skirt section absorbs vibrations and shocks, demonstrating its anti-loosening effect. According to the NAS3350 standard, vibration tests were conducted using JQA's high-speed screw loosening testing machine, resulting in a finding that it does not loosen for 17 minutes. 【Features】 ■ The spring effect generated by the elastic deformation of the skirt section absorbs vibrations and shocks. ■ Special shape for full contact of the seating surface. ■ Excellent reusability, allowing for cost reduction. ■ Passed vibration tests under the NAS3350 standard for 30,000 cycles (17 minutes). *For more details, please refer to the PDF document or feel free to contact us.

  • bolt

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration
For connecting and securing metal and wood, use a tightonic that is non-loosening and rust-resistant.

For connecting and securing metal and wood, use a tightonic that is non-loosening and rust-resistant.

A rust-resistant type of the widely recognized non-loosening washer "Titanic" for seismic-resistant applications in the housing sector is now available for M8 bolts!

Features of Rust-Resistant Type Taitonic This is a new type of Taitonic that inherits the excellent performance of "not loosening" and "following" while being treated for rust resistance. It is strong against vibrations and can withstand significant force with low torque tightening. The patented Magic Ring utilizes the principle of a wedge to tighten bolts, providing a powerful anti-loosening effect. Newly developed for M8 bolts for metal and wood! In the case of wood, it follows the natural shrinkage of the material. The rust-resistant Taitonic is environmentally friendly, featuring a completely chrome-free plating process. 【Features】 ■ Can be used for metal connections! ■ Suitable for outdoor use ■ Tightens while following the shrinkage of wood ■ Converts vibrations into tightening force with patented technology ■ Withstands significant force with low torque tightening 【Applications】 Connection and fixation of structures Vibration countermeasures for machine tools Fixing of ship lighting fixtures Fixing of connections in outdoor facilities Fixing of equipment installed outdoors that generates vibrations Fixing of connections in wood that shrinks over time 【Other Applications】 - Benches and fences (vibration suppression/fixing) - Structures exposed to rain (fixing of joints) *For more details, please feel free to contact us.

  • stainless
  • bolt
  • Other machine elements

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Search Keywords Related to Washer

COPYRIGHT © 2001-2025 IPROS CORPORATION ALL RIGHTS RESERVED.