Lock Washer

Model / MPN: 8731PC27 | NSN: 5310-01-369-6072

A washer which is usually round with a centrally located hole. Its edges and two bearing surfaces are so designed that applied pressure brings into play the spring tension and/or frictional locking principle which materially resists any tendency toward turning. It may be made of one or two pieces

Product Details

NATO Stock Number

5310-01-369-6072

Sold in multiples of

H EA

DEMIL

Hole Diameter

Between 0.628 inches and 0.641 inches

Outside Diameter

1.073 inches

Material Thickness

0.158 inches

Hardness Rating

Between 35.00 rockwell c and 43.0 rockwell c

Part Name Assigned By Controlling Agency

Washer, lock-spring, helical, regula (medium) series

Material

Stainless steel

Material Specification

66 federal standard all material responses

Surface Treatment

Oxide

Surface Treatment Specification

Mil-c-13924, class 4 military specification single treatment response

Style Designator

Split helical-right hand

Nondefinitive Specification/std Data

C class and 2 style

8731PC Series Parts

Solicitations

Solicitation	Description	Qty	UOM	Close Date
SPE5E818T043T	Washer, Lock	272	EA	05/18/2018

Pricing and Availability

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ISO 9001:2015 + AS9120B
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8731PC27 Cross Reference

MS35338-145
NASM35338-145
A11523.145.000