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National Stock Number: 5310-00-520-8959
Federal Supply Class: 5310
National Item Identification Number: 005208959
Description: WASHER,SHOULDERED
Detail: A WASHER, ROUND IN SHAPE, AND HAVING A CENTRALLY LOCATED HOLE. ONE BEARING SURFACE IS FLAT AND UNBROKEN, THE OTHER SURFACE IS IN THE FORM OF A RAISED SHOULDER (BOSS) HAVING A FLAT BEARING SURFACE. 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:
175187-3 | 98897 | LOCKHEED MARTIN CORP |
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Techincal Specification:
HOLE DIAMETER | 3.7500 INCHES MINIMUM AND 3.7512 INCHES MAXIMUM | OUTSIDE DIAMETER | 4.250 INCHES NOMINAL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | MATERIAL THICKNESS | 0.060 INCHES MINIMUM AND 0.065 INCHES MAXIMUM | MATERIAL | COPPER OVERALL | SHOULDER DIAMETER | 3.9398 INCHES MINIMUM AND 3.9410 INCHES MAXIMUM | SHOULDER HEIGHT | 0.438 INCHES NOMINAL | STYLE DESIGNATOR | SHOULDERED | SURFACE FINISH | 100.0 MICROINCHES ALL SURFACES |
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