National Item Identification Number

00-006-0529

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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26512

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61174

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Reference Numbers (Part Numbers)

A51C31524-11
A51C31524-11

Required Categories

MATERIAL
MATERIAL DOCUMENT AND CLASSIFICATION
SURFACE TREATMENT
STYLE DESIGNA

Required Description

ALUMINUM ALLOY 7075 OVERALL
QQ-A-225/9,ALLOY 7075,T7351 FED SPEC SINGLE MATERIA