Product Details | HEXAGON PLAIN NUT

5310-00-918-6921 A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see LOCKNUT, ELECTRICAL CONDUIT. See also LOCKNUT, TUBE FITTING. For items having a thickness (or height) exceeding two times the width across the flats, use POST, ELECTRICAL-MECHANICAL EQUIPMENT. (When height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.

Part Alternates: MS3569120, MS35691-20, MS35691611, MS35691-611, MS35691612, MS35691-612, FFN836, FF-N-836, 0740809, 206429PC13, 2123003, 8820560, 88-20560, 88205601, 88-20560-1, 5310-00-918-6921, 00-918-6921, 5310009186921, 009186921

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 03 AUG 1966 00-918-6921

Drawings & Photos | NSN 5310-00-918-6921


Demand History | NSN 5310-00-918-6921

Part Number Request Date QTY Origin
FFN836 2025-03-84 32 Japan
FFN836 2024-10-291 190 US
FFN836 2023-09-258 100 TR
FFN836 2021-11-307 200 United States
FFN836 2021-08-228 100 United States
5310-00-918-6921 2019-07-197 15 TW
FFN836 2019-02-44 288 US
FFN836 2018-02-32 2 US
FFN836 2017-05-123 25 United States
FF-N-836 2016-05-145 48 Spain
FFN836 2012-12-341 1 US
MS3569120 2012-08-214 99 US
FFN836 2010-11-322 100 United Kingdom
FFN836 2010-08-218 1 US
FFN836 2010-08-218 1 US
FFN836 2010-08-218 1 US
FFN836 2010-08-218 1 US
FFN836 2010-03-90 4 us
FFN836 2010-03-81 50 United States
FFN836 2010-02-46 50 United States
5310-00-918-6921 2009-12-343 190 US
FFN836 2009-07-183 1000 US
FFN836 2009-05-141 580 US
FFN836 2008-07-195 20 US
FFN836 2008-06-171 200 US
FFN836 2008-02-39 1 US
FFN836 2007-10-298 100 US

Cross Reference | NSN 5310-00-918-6921

Part Number Cage Code Manufacturer
0740809 S3002 GENERAL DYNAMICS EUROPEAN,LAND-SYSTEMS-MOWAG GMBH
206429PC13 43689 HUNTINGTON INGALLS INCORPORATED DIV NEWPORT NEWS
2123003 D9182 BOSCH REXROTH GMBH LOHMANN +STOLTERFOHT
5310009186921 SCY13 E.C.A ETABLISSEMENT CENTRALD'APPROVISIONNEMENT DES
88-20560 30554 DEPARTMENT OF DEFENSE PROJECT MANAGER-MOBILE ELECTRIC POWER
88-20560-1 30554 DEPARTMENT OF DEFENSE PROJECT MANAGER-MOBILE ELECTRIC POWER
FF-N-836 81348 FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES
FFN836 81348 FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES
MS35691-20 96906 MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS
MS35691-611 96906 MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS
MS35691-612 96906 MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS

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Technical Data | NSN 5310-00-918-6921

Characteristic Specifications
THREAD SERIES UNC
NOMINAL THREAD SIZE 0.375 INCHES
THREAD QUANTITY PER INCH 16
THREAD CLASS 2B
THREAD DIRECTION RIGHT-HAND
MATERIAL COPPER ALLOY 464 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION QQ-B-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT OXIDE OVERALL
HARDNESS RATING NOT RATED
NUT STYLE A12 HEXAGON
NUT HEIGHT 0.210 INCHES MINIMUM AND 0.227 INCHES MAXIMUM
WIDTH ACROSS FLATS 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM
BEARING SURFACE TYPE CHAMFERED OR WASHER FACED
TEMP RATING NOT RATED
NONDEFINITIVE SPEC/STD DATA 2 TYPE AND 5 STYLE
MANUFACTURERS CODE 81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE FF-N-836
MANUFACTURERS CODE 96906
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE MS35691-20

Restrictions/Controls & Freight Information | NSN 5310-00-918-6921

Category Code Description
Shelf-Life Code:0Nondeteriorative
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
No Freight Information