National Item Identification Number

00-139-8121

National Stock Number

Item Name

WASHER,CONCAVE

Federal Supply Class

5310

Description

A washer which is round with a centrally located hole. One bearing surface is smooth, flat, and unbroken, the other bearing surface is smooth, unbroken, and is recessed to form a curved or spherical contour. See also WASHER (1), CONVEX. Excludes WASHER (1), RECESSED and BEARING, WASHER, THRUST.

Commercial and Government Entity Code (Supplier Data)

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82577

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Reference Numbers (Part Numbers)

3278919

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