National Item Identification Number
National Stock Number
WASHER,SHOULDERED AND RECESSED
Federal Supply Class
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)
AIRCRAFT MISSILE PARTS MFG CORP
1632 FISKE PL
SEASTROM MANUFACTURING CO.
456 SEASTROM ST
Reference Numbers (Part Numbers)
MATERIAL DOCUMENT AND CLASSIFICATION
ALUMINUM ALLOY 5052 OVERALL
QQ-A-250/8 FED SPEC SINGLE MATERIAL RESPONSE OVERAL