• Direct U.S. Manufacturing

  • Precision Stainless Steel Washers & Spacers

  • When your project requires exact tolerances, settling for standard off-the-shelf washers can compromise the entire assembly. EXTSW manufactures custom 304L and 316L stainless steel washers directly in Sonora, California, ensuring you get the precise fit you need. We bring over 40 years of fabrication experience and use 100% domestic raw materials traceable with MTR certification.
40+ Years fabrication experience 10+ Years selling washers & spacers 2 Premium grades 304 & 316 100% US Manufactured 40+ Years fabrication experience 10+ Years selling washers & spacers 2 Premium grades 304 & 316 100% US Manufactured 40+ Years fabrication experience 10+ Years selling washers & spacers 2 Premium grades 304 & 316 100% US Manufactured 40+ Years fabrication experience 10+ Years selling washers & spacers 2 Premium grades 304 & 316 100% US Manufactured 40+ Years fabrication experience 10+ Years selling washers & spacers 2 Premium grades 304 & 316 100% US Manufactured 40+ Years fabrication experience 10+ Years selling washers & spacers 2 Premium grades 304 & 316 100% US Manufactured 40+ Years fabrication experience 10+ Years selling washers & spacers 2 Premium grades 304 & 316 100% US Manufactured 40+ Years fabrication experience 10+ Years selling washers & spacers 2 Premium grades 304 & 316 100% US Manufactured 40+ Years fabrication experience 10+ Years selling washers & spacers 2 Premium grades 304 & 316 100% US Manufactured 40+ Years fabrication experience 10+ Years selling washers & spacers 2 Premium grades 304 & 316 100% US Manufactured
EXTSW BEVELED .202”/ 10-32 ID x .615" OD x .140” Thick 316 Stainless Washer, Fits 702 ARP 12 point Bolts EXTSW BEVELED .202”/ 10-32 ID x .615" OD x .140” Thick 316 Stainless Washer, Fits 702 ARP 12 point Bolts
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EXTSW BEVELED .200" ID x 1.365" OD x 1/4" Thick 316 Stainless Washer EXTSW BEVELED .200" ID x 1.365" OD x 1/4" Thick 316 Stainless Washer
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EXTSW BEVELED 6.25 mm ID x .900” OD x .150” Thick 316 Stainless washer Fits #760-1003 ARP Bolts EXTSW BEVELED 6.25 mm ID x .900” OD x .150” Thick 316 Stainless washer Fits #760-1003 ARP Bolts
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EXTSW BEVELED .257” ID x .740" OD x .140” Thick 316 Stainless Washer, Fits #611 ARP Bolts
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EXTSW BEVELED .257” ID x .865" OD x .140” Thick 316 Stainless Washer, Fits #611 ARP Bolts
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EXTSW BEVELED .257” ID x .990" OD x 1/4" Thick 316 Stainless Washer EXTSW BEVELED .257” ID x .990" OD x 1/4" Thick 316 Stainless Washer
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EXTSW BEVELED .257” ID x .990"  OD x 1/4" Thick 316 SS Countersunk Washer EXTSW BEVELED .257” ID x .990"  OD x 1/4" Thick 316 SS Countersunk Washer
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EXTSW BEVELED .257” ID x 1.490" OD x 1/4" Thick 316 Stainless Washer
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EXTSW BEVELED .257” ID x 1.490" OD x 3/8" Thick 316 Stainless Countersunk Washer EXTSW BEVELED .257” ID x 1.490" OD x 3/8" Thick 316 Stainless Countersunk Washer
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EXTSW BEVELED .257” ID x 1.740" OD x 1/4" Thick 316 Stainless Washer
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EXTSW BEVELED .323" ID x .865" OD x .160” Thick 316 Stainless washer Fits #612 ARP Bolts EXTSW BEVELED .323" ID x .865" OD x .160” Thick 316 Stainless washer Fits #612 ARP Bolts
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extsw 3/8” ID x 7/8” OD x 1/4” thick beveled 316 stainless washer extsw 3/8” ID x 7/8” OD x 1/4” thick beveled 316 stainless washer
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EXTSW BEVELED .323" ID x .938” OD x .188" Thick 316 Stainless washer, Fits 8 mm ARP Nut 400-8310 EXTSW BEVELED .323" ID x .938” OD x .188" Thick 316 Stainless washer, Fits 8 mm ARP Nut 400-8310
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EXTSW BEVELED .323" ID x .990" OD x .158/.115” Thick 316 Stainless washer, Fits #612 ARP Bolts EXTSW BEVELED .323" ID x .990" OD x .158/.115” Thick 316 Stainless washer, Fits #612 ARP Bolts
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EXTSW BEVELED 5/16" ID x 1.115" OD x .158” Thick 316 Stainless washer - Fits #612 ARP Bolts EXTSW BEVELED 5/16" ID x 1.115" OD x .158” Thick 316 Stainless washer - Fits #612 ARP Bolts
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extsw 3/8” ID x 7/8” OD x 1/4” thick beveled 316 stainless washer
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EXTSW BEVELED .323" ID x 1.240" OD x .170” Thick 316 Stainless washer, Fits #761-1017 Hex ARP Bolts EXTSW BEVELED .323" ID x 1.240" OD x .170” Thick 316 Stainless washer, Fits #761-1017 Hex ARP Bolts
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EXTSW 8.33 mm ID x 25.1 mm OD x 6.35 mm Thick 304 Stainless Washer EXTSW 8.33 mm ID x 25.1 mm OD x 6.35 mm Thick 304 Stainless Washer
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EXTSW 8.33 mm ID x 30 mm OD x 4 mm Thick 304 Stainless Washer EXTSW 8.33 mm ID x 30 mm OD x 4 mm Thick 304 Stainless Washer
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EXTSW 8.33 mm ID x 30 mm OD x 6.3 mm Thick 304 Stainless Washer EXTSW 8.33 mm ID x 30 mm OD x 6.3 mm Thick 304 Stainless Washer
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EXTSW 10.16 mm ID x 15 mm OD x 3.5 mm Thick 304 Stainless Washer EXTSW 10.16 mm ID x 15 mm OD x 3.5 mm Thick 304 Stainless Washer
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EXTSW 10.16 mm ID x 15.62 mm OD x 19.05 mm Long 304 Stainless Spacer EXTSW 10.16 mm ID x 15.62 mm OD x 19.05 mm Long 304 Stainless Spacer
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10 mm ID x 22 mm OD x 6 mm Thick 316 Stainless Washer
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EXTSW 10.16 mm ID x 22 mm OD x 6.35mm Thick 304 Stainless Washer EXTSW 10.16 mm ID x 22 mm OD x 6.35mm Thick 304 Stainless Washer
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EXTSW 10.16 mm ID x 25.1 mm OD x 3.2 mm Thick 304 Stainless Washer EXTSW 10.16 mm ID x 25.1 mm OD x 3.2 mm Thick 304 Stainless Washer
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EXTSW 10.16 mm ID x 25.1 mm OD x 4.8 mm Thick 304 Stainless Washer EXTSW 10.16 mm ID x 25.1 mm OD x 4.8 mm Thick 304 Stainless Washer
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EXTSW 10.16 mm ID x 25.1 mm OD x 6.35 mm Thick 304 Stainless Washer EXTSW 10.16 mm ID x 25.1 mm OD x 6.35 mm Thick 304 Stainless Washer
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EXTSW 10.16 mm ID x 25.1 mm OD x 25.4 mm Long 304 Stainless Spacer EXTSW 10.16 mm ID x 25.1 mm OD x 25.4 mm Long 304 Stainless Spacer
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EXTSW 10.16 mm ID x 31.5 mm OD x 3.2 mm Thick 304 Stainless Washer EXTSW 10.16 mm ID x 31.5 mm OD x 3.2 mm Thick 304 Stainless Washer
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EXTSW 10.16 mm ID x 31.5 mm OD x 6.35 mm Thick 304 Stainless Washer EXTSW 10.16 mm ID x 31.5 mm OD x 6.35 mm Thick 304 Stainless Washer
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EXTSW 10.16 mm ID x 44.2 mm OD x 3.2 mm Thick 304 Stainless Washer EXTSW 10.16 mm ID x 44.2 mm OD x 3.2 mm Thick 304 Stainless Washer
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EXTSW 12.5 mm ID x 25.1 mm OD x 6.35 mm Thick 304 Stainless Washer EXTSW 12.5 mm ID x 25.1 mm OD x 6.35 mm Thick 304 Stainless Washer
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EXTSW 12.04 mm ID x 27.4 mm OD x 5.5 mm Thick 304 Stainless Washer EXTSW 12.04 mm ID x 27.4 mm OD x 5.5 mm Thick 304 Stainless Washer
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EXTSW 12.04 mm ID x 28.3mm OD x 4.77 mm Thick 304 Stainless Washer EXTSW 12.04 mm ID x 28.3mm OD x 4.77 mm Thick 304 Stainless Washer
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EXTSW 6 mm ID x 11 mm OD x 4 mm thick 316 Stainless washer
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EXTSW 6.35 mm ID x 12.44 mm OD x 6.38 mm thick 316 Stainless Spacer
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EXTSW 6 mm ID x 18.8 mm OD x 17.47 mm thick 316 Stainless Spacers EXTSW 6 mm ID x 18.8 mm OD x 17.47 mm thick 316 Stainless Spacers
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EXTSW 8.33 mm ID x 13 mm OD x 9 mm Long 316 Stainless Spacer EXTSW 8.33 mm ID x 13 mm OD x 9 mm Long 316 Stainless Spacer
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EXTSW 8.33 mm ID x 14 mm OD x 4 mm Thick 316 Stainless Washer EXTSW 8.33 mm ID x 14 mm OD x 4 mm Thick 316 Stainless Washer
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EXTSW .323" ID x .551" OD x .196" Thick 316 Stainless Washer EXTSW .323" ID x .551" OD x .196" Thick 316 Stainless Washer
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EXTSW 8.33 mm ID x 14 mm OD x 6 mm Thick 316 Stainless Washer EXTSW 8.33 mm ID x 14 mm OD x 6 mm Thick 316 Stainless Washer
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EXTSW 8.33 mm ID x 15 mm OD x 22 mm Thick 316 Stainless Spacer
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EXTSW 8.33 mm ID x 25.1 mm OD x 6.35 mm Thick 316 Stainless Washer EXTSW 8.33 mm ID x 25.1 mm OD x 6.35 mm Thick 316 Stainless Washer
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EXTSW 8.33 mm ID x 30 mm OD x 4 mm Thick 316 Stainless Washer EXTSW 8.33 mm ID x 30 mm OD x 4 mm Thick 316 Stainless Washer
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EXTSW .323" ID x 1.181" OD x .250" Thick 316 Stainless Washer EXTSW .323" ID x 1.181" OD x .250" Thick 316 Stainless Washer
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3/8" ID 316 stainless spacers EXTSW 9 mm ID x 27.4 mm OD x 10 mm Thick 316 Stainless Spacer
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EXTSW 10.16 mm ID x (12.62 - 12.67 mm OD) x 12.7 mm Thick 316 Stainless Spacer
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EXTSW 10.03 mm ID x 15 mm OD x 5.59 mm Thick 316 Stainless Washer
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EXTSW 10.16 mm ID x 15.62 mm OD x 4 mm Thick 316 Stainless Washer
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EXTSW 10.16 mm ID x 15.62 mm OD x 17 mm Thick 316 Stainless Spacer
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EXTSW 10.16 mm ID x 15.62 mm OD x 19.05 mm Thick 316 Stainless Spacer EXTSW 10.16 mm ID x 15.62 mm OD x 19.05 mm Thick 316 Stainless Spacer
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Why Choose EXTSW

EXTSW combines more than 40 years of fabrication experience with 10 years of focused washer and spacer sales. We manufacture custom 304L and 316L stainless steel washers and spacers in the United States using domestic raw materials, with traceability supported by Material Test Reports and certification paperwork.

40+ Years of Fabrication Experience

EXTSW is a dedicated United States manufacturer of custom 304L and 316L stainless steel washers and spacers. With over four decades of fabrication expertise and ten years specifically focused on selling precision washers and spacers, we deliver consistent, reliable components for industrial, marine, and commercial applications.

100% Domestic Materials & Manufacturing

Every washer and spacer we sell is manufactured in our Sonora, California facility using 100% domestic raw materials. We provide full traceability with Material Test Reports (MTR) and certification paperwork available for all our products. By buying direct from the source, you ensure quality control and eliminate middleman markups.

Our Products and Services

Choose catalog washers and spacers or discuss a custom stainless steel solution with the EXTSW team. We ship to all 50 states, with orders typically processed within 1 to 2 business days. Contact us at contact@extsw.com or (209) 517-3150 for product and service support.

Custom Stainless Steel Washers

We manufacture custom 304L and 316L stainless steel washers to your exact specifications. From extra-thick structural washers to precision beveled designs, our custom capabilities ensure you get the exact dimensions and material grade required for your project. Explore our custom stainless steel washer capabilities.

Precision Spacers & Manufacturing Services

In addition to our standard catalog, we provide specialized manufacturing services including precision turning, beveling, and recessing for ARP bolts. We ship to all 50 states with orders typically processed within 1 to 2 business days. View our manufacturing services.

FAQs

Frequently Asked Questions

Find answers to common questions about our materials, manufacturing, and applications.

304 stainless steel is ideal for general industrial and fabrication use with strong corrosion resistance. 316 stainless steel includes molybdenum for enhanced resistance against chemicals, saltwater, and harsh cleaning environments.

Yes. All EXTSW washers and spacers are manufactured in the United States.

Yes. Our spacers are precision-turned for consistent sizing, alignment, and dependable fitment.

Our products are commonly used in beverage equipment, dairy processing, marine applications, industrial fabrication, machinery assembly, and structural mounting systems.

Yes. EXTSW specializes in extra-thick stainless washers designed for improved load distribution and durability.

Yes. 316 stainless steel is specifically recommended for marine, chemical, and high-moisture environments because of its superior corrosion resistance.

Direct U.S. Manufacturing

Precision Stainless Steel Washers & Spacers

100% domestic raw materials. Traceable with MTR and certification paperwork. Buy direct from the source.