National Item Identification Number

01-439-3846

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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08125

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15175

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L3 COMMUNICATIONS ESSCO INC.
DIV ESSCO WITH 115 EMPLOYEES IN THIS
48 OLD POWDER MILL RD
CONCORD
MA
01742
978-369-7200

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Reference Numbers (Part Numbers)

2252-58
2252-58

Required Categories

III END ITEM IDENTIFICATION
THE MANUFACTURERS DATA
MANUFACTURERS CODE
DESIGN

Required Description

ARSR4
08125
2252-58