Product Details | HEXAGON PLAIN NUT

5310-00-010-2640 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: FFB571ATYPEA, 63814E7, 82328, 170839, 321268, 322044PC104, 322660PC221, 322661PC221, 3271376, 331320SH3ITEM33, 332366SH3ITEM20, 332407SH5ITEM21, 337B1, 45511E7, 507925, 5231545, 5231-54-5, 5310-00-010-2640, 00-010-2640, 5310000102640, 000102640

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 01 JAN 1963 00-010-2640

Drawings & Photos | NSN 5310-00-010-2640


Cross Reference | NSN 5310-00-010-2640

Part Number Cage Code Manufacturer
170839 70691 CAPITOL GEARS INC
321268 1ML14 D.W. HERCULES, LLC DBA HERCULES ENGINE COMPONENTS
321268 28265 HERCULES ENGINE CO INC
322044PC104 1ML14 D.W. HERCULES, LLC DBA HERCULES ENGINE COMPONENTS
322044PC104 28265 HERCULES ENGINE CO INC
322660PC221 1ML14 D.W. HERCULES, LLC DBA HERCULES ENGINE COMPONENTS
322660PC221 28265 HERCULES ENGINE CO INC
322661PC221 1ML14 D.W. HERCULES, LLC DBA HERCULES ENGINE COMPONENTS
322661PC221 28265 HERCULES ENGINE CO INC
3271376 55380 HATCH & KIRK, INC. DIV HATCH & KIRK INC
3271376 72915 GENERAL MOTORS CORP ELECTRO-MOTIVE DIV
331320SH3ITEM33 1ML14 D.W. HERCULES, LLC DBA HERCULES ENGINE COMPONENTS
331320SH3ITEM33 28265 HERCULES ENGINE CO INC
332366SH3ITEM20 1ML14 D.W. HERCULES, LLC DBA HERCULES ENGINE COMPONENTS
332366SH3ITEM20 28265 HERCULES ENGINE CO INC
332407SH5ITEM21 1ML14 D.W. HERCULES, LLC DBA HERCULES ENGINE COMPONENTS
332407SH5ITEM21 28265 HERCULES ENGINE CO INC
337B1 56442 DIAMOND REO TRUCK CO
45511E7 09386 ALLIEDSIGNAL INC ALLIEDSIGNAL BRAKING SYSTEMS-WHEEL
507925 23705 FRUEHAUF CORP
5231-54-5 81336 CHIEF OF ENGINEERS DEPT OF ARMY
63814E7 09386 ALLIEDSIGNAL INC ALLIEDSIGNAL BRAKING SYSTEMS-WHEEL
82328 41885 HAYES WHEELS INTL INC AKRON OPNS
FFB571ATYPEA 81348 FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES

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Technical Data | NSN 5310-00-010-2640

Characteristic Specifications
THREAD SERIES UNC
NOMINAL THREAD SIZE 0.750 INCHES
THREAD QUANTITY PER INCH 10
THREAD CLASS 2B
THREAD DIRECTION RIGHT-HAND
MATERIAL STEEL OVERALL
HARDNESS RATING NOT RATED
NUT STYLE A12 HEXAGON
NUT HEIGHT 0.632 INCHES MINIMUM AND 0.680 INCHES MAXIMUM
WIDTH ACROSS FLATS 1.088 INCHES MINIMUM AND 1.125 INCHES MAXIMUM
BEARING SURFACE TYPE CHAMFERED OR WASHER FACED
TEMP RATING NOT RATED
MANUFACTURERS CODE 81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE FFB571ATYPEA

Restrictions/Controls & Freight Information | NSN 5310-00-010-2640

Category Code Description
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.
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