National Item Identification Number
01-147-4917
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)
1UVT5
Reference Numbers (Part Numbers)
319890
319890
319890
Required Categories
MATERIAL
SURFACE TREATMENT
HARDNESS RATING
STYLE DESIGNATOR
HOLE DIAMETER
S
Required Description
STEEL COMP 416 OVERALL
PASSIVATE OVERALL
38.0 ROCKWELL C MINIMUM
37 SHOULDERE