Product Details | HEXAGON PLAIN NUT

5310-00-021-8584 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: FFB571TYPEA, 701002, 901624K6, 218584, 30S1K6, 5310-00-021-8584, 00-021-8584, 5310000218584, 000218584

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 01 JAN 1963 00-021-8584

Drawings & Photos | NSN 5310-00-021-8584


Cross Reference | NSN 5310-00-021-8584

Part Number Cage Code Manufacturer
218584 21450 ARMY WEAPONS COMMAND ATTN AMSWE-REE-S
218584 24617 GENERAL MOTORS CORP
218584 7X677 GENERAL MOTORS LLC DBA GENERAL MOTORS
30S1K6 56442 DIAMOND REO TRUCK CO
701002 55396 SMITH OTIS A MFG CO
901624K6 06848 HONEYWELL INTERNATIONAL INC. DBA HONEYWELL
FFB571TYPEA 81348 FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES

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Technical Data | NSN 5310-00-021-8584

Characteristic Specifications
THREAD SERIES UNF
NOMINAL THREAD SIZE 0.250 INCHES
THREAD QUANTITY PER INCH 28
THREAD CLASS 2B
THREAD DIRECTION RIGHT-HAND
MATERIAL STEEL OVERALL
SURFACE TREATMENT CADMIUM OR ZINC OVERALL
HARDNESS RATING NOT RATED
NUT STYLE A12 HEXAGON
NUT HEIGHT 0.187 INCHES MINIMUM AND 0.219 INCHES MAXIMUM
WIDTH ACROSS FLATS 0.4280 INCHES MINIMUM AND 0.4375 INCHES MAXIMUM
BEARING SURFACE TYPE WASHER FACED
TEMP RATING NOT RATED
NONDEFINITIVE SPEC/STD DATA A TYPE
DEPARTURE FROM CITED DOCUMENT AS MODIFIED BY HEIGHT RQMT
MANUFACTURERS CODE 81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE FFB571TYPEA

Restrictions/Controls & Freight Information | NSN 5310-00-021-8584

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
NMF Description 093486 BOLTS,NUTS OR SCREWS, NOI (SUB 3)
Less than car load rating U 50
Less than truck load rating W Rating Variable
Water commodity Code 573 unknown
Originating Activity Code XX
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity B Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable