NSN 5310-01-388-7907, 5310013887907
NUT,SELF-LOCKING,ASSEMBLED WASHE

Federal Supply Classification: FSC 5310 - Nuts and Washers
National Item Identification Number: NIIN 013887907
Codification Country: United States
Item Name Code: INC 29736
Criticality: ( )
Hazardous Material Indicator Code: (N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.

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DLMS^® Summary

National Stock Number 5310-01-388-7907

National Stock Number (NSN) 5310-01-388-7907, or NIIN 013887907, (nut,self-locking,assembled washe) was assigned April 8, 1994 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are no manufacturer part numbers associated to this NSN.

This part number has not been procured by the US Government in over 5 years.

This NSN is unique to one weapons system.

Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Mar 18, 2014, this NSN's acquisition method was noted as: Not established. Not established.

This NSN is assigned to Item Name Code (INC) 29736. [A NUT ON WHICH HAS BEEN ASSEMBLED A NONREMOVABLE WASHER. AN INTEGRAL FEATURE IS INCORPORATED FOR LOCKING ON THE THREADS OF A MATING MEMBER.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 5310013887907 does not contain precious metals.

This information was last updated on Jun 01, 2025.

Technical Characteristics

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: (STDC) MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE WASHER
THREAD DIRECTION: (AAJF) RIGHT-HAND
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) AMS 5024 ASSN STD 1ST MATERIAL RESPONSE NUT OR AMS 6322 ASSN STD 2ND MATERIAL RESPONSE NUT
SURFACE TREATMENT: (SFTT) CHROMATE WASHER
MATERIAL: (MATT) ALUMINUM ALLOY 2024 WASHER OR ALUMINUM ALLOY 7075 WASHER
SURFACE TREATMENT: (SFTT) CADMIUM NUT AND CHROMATE NUT
NOMINAL THREAD SIZE: (CQJX) 0.625 INCHES
SPECIAL FEATURES: (FEAT) SAFETY CRITICAL THREAD PER FED STD H28/20 SYSTEM 22
NUT STYLE: (ACTA) FLAT WITH TURNED BACK EDGE
CRITICALITY CODE JUSTIFICATION: (CRTL) FEAT
WIDTH ACROSS FLATS: (ASDB) 0.990 INCHES MINIMUM AND 1.002 INCHES MAXIMUM
THREAD QUANTITY PER INCH: (CMLP) 18
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) QQ-A-225/6 FED SPEC 1ST MATERIAL RESPONSE WASHER OR QQ-A-250/12 FED SPEC 2ND MATERIAL RESPONSE WASHER
MATERIAL: (MATT) PLASTIC POLYAMIDE LOCKING INSERT
MATERIAL: (MATT) STEEL COMP 1137 NUT OR STEEL COMP 8740 NUT
OVERALL HEIGHT: (ABKW) 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM
THREAD SERIES: (BZRR) UNJF
THREAD CLASS: (AAJD) 3B
WASHER OUTSIDE DIAMETER: (AAVX) 1.194 INCHES MINIMUM AND 1.224 INCHES MAXIMUM
LOCKING FEATURE: (AAUM) PREVAILING TORQUE WITH NONMETALLIC INSERT
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: (STDC) QQ-P-416, TY2, CL 2 FED SPEC SINGLE TREATMENT RESPONSE NUT