National Item Identification Number

00-426-6257

National Stock Number

Item Name

WASHER,SHOULDERED AND RECESSED

Federal Supply Class

5310

Description

A washer, round in shape, having a centrally located hole. One bearing surface is flat, the other surface is in the form of a raised shoulder (boss) having a flat bearing surface. Either or both of the bearing surfaces must be broken by a counterbore, countersink, or similar shaped recess. The thickness of the shoulder (boss) must not exceed 25 percent of the shoulder (boss) diameter. For items having a shoulder (boss) of greater thickness, use BEARING, SLEEVE; BUSHING, SLEEVE; or SPACER, SLEEVE. Excludes INSULATOR, WASHER and thrust type washers.

Commercial and Government Entity Code (Supplier Data)

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11534

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BEI SENSORS & SYSTEMS COMPANY
DBA DUNCAN ELECTRONICS DIVISION
170 TECHNOLOGY DR
IRVINE
CA
92618
949-341-9500

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Reference Numbers (Part Numbers)

225143
225143

Required Categories

MATERIAL
MATERIAL DOCUMENT AND CLASSIFICATION
SURFACE TREATMENT
SURFACE TREAT

Required Description

STEEL COMP 303 OVERALL
QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
PASS