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Washer Facts - A valuable guide for cost-effective flat washer specifications

4

Flat Washer Reference Specifications - Nominal dimensions, materials and platings 5-7
Mil-Specifications ( Military Specs ) - Description of flat washers
covered by AN, MS, NAS
8

Certifications Available ( PDF ) - Explanation of tests required by various Mil-Specs and list of Quality Certifications available

9

Metallic Flat Washers: AN - MS - NAS Standards

Complete specifications for over 600 flat washers (listed by I.D.). Includes inch and metric parts. DIN Specifications also referenced. Availability of parts in steel, stainless steel, brass and aluminum alloy is noted. Dash numbers identify MIL-SPEC parts.

View PDF File: AN - MS - NAS - Standards

High Strength - Heat Treated Washers:

Lists flat washers and flat washers with countersunk holes. MS 20002 washers are made from 4130 Chrome Molybdenum and other steel alloys. Also includes case hardened 1020 steel washers (MS17811); heat treated and plated steel washers (MS 21206); washers made from Corrosion Resistant Steel (MS 9320); and Corrosion Resistant Steel washers with 75,000 psi, UTS min (NAS 1587) as well as 10910174 Ordnance washers.

View PDF Catalog File: High Strength - Heat Treated Washers

26-28

Metallic Torque Washers

Prongs on these square hole washers embed in wood, plywood and other ductile materials, making washers self-retaining during assembly. Square hole prevent rotation of square shouldered carriage bolt.

View PDF Catalog File: Metallic Torque Washers

Metallic Special Washers

Hundreds of washer variations are available as both outer and inner washer rims can be individually formed and shaped to meet specfic needs.

View PDF Catalog File: Metallic Special Washers

Neoprene Polymer Flat Washers

Prevent leaks, distribute pressure. Neoprene polymer is highly resistant to sun, ozone, weathering, oils, fuels, other chemicals and aging. Silicone rubber provides high strength, resilience, toughness, stability at high temperatures and resistance to chemicals. Polymer washers also available bonded to steel and stainless steel conical washers.

View PDF Catalog File: Neoprene Polymer Flat Washers

32-33

Insulating Fibre Flat Washers

Electrical insulating flat washers made from vulcanized fibre, fibre board, fish
paper, high density bone, rag paper, etc. Made to ASTM D710, NAS 549.
MIL-F-1148 Grade CH form S, NAS 70 and DIN Standards.

View PDF Catalog File: Insulating Fibre Flat Washers

Phenolic Flat Washers

Stamped from various industrial grade laminates including paper, canvas, linen, glass, glass epoxy, cotton phenolics, etc.

View PDF Catalog File: Phenolic Flat Washers

36-37

Thermoplastic Nylon Flat Washers & Spacers

Resist abrasion, impacts, organic solvents, oil, gas and temperature extremes. Excellent creep resistance. Delrin(R), Nomex, Mylar(R), Polypropylene also listed.

View PDF Catalog File: Thermoplastics - Nylon Flat Washers & Spacers

Thermoplastic Teflon Flat Washers

Made from inert Virgin Teflon. Impermeable to most corrosive liquids, vapors
and gasses even in high temperature or high pressure environments. Excellent
electrical and dielectric properties.

View PDF Catalog File: Thermoplastics - Teflon Flat Washers

Non-Metallic Shoulder Washers

MIL-M-38527/09 series washers made from Teflon or Polyphenylene Sulfide and frequently used as mounting pads for electrical/electronic components. MIL-W-45595 series washers and bushings made from Polymide (Natural Nylon) per ASTM-B16, resist compression and provide spacing. 94 V2 rated shoulder washers can be supplied in customer-specified materials in hundreds of length/diameter combinations.

View PDF Catalog File: Non-Metallic Shoulder Washers

Nylon Standard Spacers

Molded or cut from bar stock depending on thickness required. Resist creep
and maintain required separation. Impact resistant and relatively impervious to
temperature extremes, organic solvents, oils and gasoline.

View PDF Catalog File: Nylon Standard Spacers

49-52

Plating Codes: WCL Material Specifications

View PDF File: WCL Material and Plating Codes

53-54

WCL Fasteners - High Performance Engineered Fastener Components & ProductsWCL is recognized as the nation's flat washer specialist with the most comprehensive offering of metallic and non-metallic flat washers available from a single source. This is backed up with in-depth knowledge of all applicable military specifications and related testing and certification requirements.
You know it's right if it's from WCL!

 

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WCL Company specializes in reliable low-cost, engineered high performance metallic and non-metallic washers, washer products, components, bumpers, bearings, hole plugs and more. WCL has 50 years of experience with all types of standard and engineered fasteners, and provides a comprehensive line of component products for sale from some of the world's leading producers.
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