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National Stock Number:
5310-01-380-2961
Federal Supply Class:
5310
National Item Identification Number:
013802961
Description:
NUT,SELF-LOCKING,CASTELLATED,HEX
Detail:
A NUT HAVING 6 FLAT SIDES, FLAT ON THE BOTTOM AND HAVING A SLOTTED CYLINDRICAL OR DOME SHAPED UPPER PORTION. AN INTEGRAL FEATURE IS INCORPORATED FOR LOCKING ON THE THREADS OF A MATING MEMBER. THE SLOTS WHEN USED IN CONJUNCTION WITH A SOLID OR SPLIT (COTTER) PIN, ACT AS AN EXTRA "FAIL SAFE" FEATURE IN CRITICAL APPLICATIONS. EXCLUDES NUT (1), SELF-LOCKING, SLOTTED, HEXAGON.
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Manufacturer Information:
| 50FC-428 | 70318 | ALLMETAL SCREW PRODUCTS CORP | | SMB586385 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR |
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Techincal Specification:
| MATERIAL | STEEL CORROSION RESISTING OVERALL | | WIDTH ACROSS FLATS | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM | | NUT STYLE | CASTELLATED, HEXAGON | | THREAD CLASS | 3B | | BEARING SURFACE TYPE | ANY ACCEPTABLE | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES | UNF | | THREAD DIRECTION | RIGHT-HAND | | NOMINAL THREAD SIZE | 0.250 INCHES | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763 CMPSN 302/304, NO. 1 FINISH FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | NUT HEIGHT | 0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM | | LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
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