National Item Identification Number
01-508-1258
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)
D9182
31442
NORTHROP GRUMMAN SYSTEMS CORPORATION
ELECTRONIC SYSTEMS DIV
895 OCEANIC DR
ANNAPOLIS
MD
21401
410-260-5330
Reference Numbers (Part Numbers)
6393680-278
6393680-278
Required Categories
MATERIAL
MATERIAL DOCUMENT AND CLASSIFICATION
STYLE DESIGNATOR
HOLE DIAMETER;
Required Description
TITANIUM ALLOY UNS R56401 OVERALL
MIL-T-9046, CODE AB-2, CONDITION A MIL SPEC 1