National Item Identification Number
01-283-4241
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)
02246
Reference Numbers (Part Numbers)
501-025
Required Categories
MATERIAL
HARDNESS RATING
HOLE DIAMETER
SHOULDER DIAMETER
OUTSIDE DIAMETER
S
Required Description
STEEL COMP 1010 OVERALL
88.0 ROCKWELL SUPERFICIAL 15-T NOMINAL
1.380 INCHES MI