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National Stock Number:
5310-01-243-9437
Federal Supply Class:
5310
National Item Identification Number:
012439437
Description:
WASHER,SHOULDERED AND RECESSED
Detail:
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.
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Manufacturer Information:
| 13211E8712 | 97403 | CECOM LR CENTER |
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Techincal Specification:
| HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM | | HOLE DIAMETER | 4.025 INCHES MINIMUM AND 4.035 INCHES MAXIMUM | | OUTSIDE DIAMETER | 5.880 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A322 ASSN STD ALL MATERIAL RESPONSES OVERALL | | MATERIAL THICKNESS | 0.159 INCHES MINIMUM AND 0.163 INCHES MAXIMUM | | MATERIAL | STEEL COMP 4140 OR STEEL COMP 4142 OR STEEL COMP 8640 OVERALL | | SHOULDER DIAMETER | 4.560 INCHES NOMINAL | | SHOULDER HEIGHT | 0.340 INCHES NOMINAL | | SPECIAL FEATURES | DEPTH OF BOTTOM RECESS 0.160 IN.,CHAMFER OUTER EDGE 30 DEG |
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