PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

218582Nut,plain,hexagon

General Motors Corp · NSN 5310-00-021-8582 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-021-8582 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-021-8582. Primary manufacturer part number: 218582.
Features
  • Nut,plain,hexagon — FSC 5310
  • Thread Class: 2B
  • Width Across Flats: 0.7280 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
  • Thread Series: UNF
  • Thread Quantity Per Inch: 20
  • Nominal Thread Size: 0.438 INCHES IN
  • Bearing Surface Type: CHAMFERED OR WASHER FACED
  • Nondefinitive Spec/std Data: A TYPE
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-021-8582, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is General Motors Corp. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-021-8582
Primary Part Number218582
Item NameNut,plain,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerGeneral Motors Corp
StatusCANCELLED
Thread Class2B
Width Across Flats0.7280 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
Thread SeriesUNF
Thread Quantity Per Inch20
Nominal Thread Size0.438 INCHES IN
Bearing Surface TypeCHAMFERED OR WASHER FACED
Nondefinitive Spec/std DataA TYPE
MaterialSTEEL OVERALL
Nut Height0.340 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Material Document and ClassificationQQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Nut StyleHEXAGON
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5305-00-010-0658100658 INTERCHANGEABLE
Screw,machine
Chrysler Realty Company Llc Dba Daimler Chrysler
5905-00-053-1787RHS25K INTERCHANGEABLE
Resistor,variable,wire Wound,non
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
5975-00-165-3432 INTERCHANGEABLE
Connector,strip
5120-00-273-00834619 INTERCHANGEABLE
Auger,pipe and Sewer,hand
Augerscope Inc Dba Marco Products Co
5940-00-291-0085STP163 INTERCHANGEABLE
Terminal,quick Disconnect
Standard Motor Products
6640-00-435-7385 INTERCHANGEABLE
Oven,laboratory
5945-00-472-06773N6385 INTERCHANGEABLE
Relay,electrical
Caterpillar Inc Div Caterpillar Defense
5950-00-520-5296 INTERCHANGEABLE
Coil,radio Frequency
6640-00-532-7524 INTERCHANGEABLE
Oven,laboratory
2590-00-752-9138 INTERCHANGEABLE
Filler Neck,vehicular Components
Cross-Reference Index
Part NumberManufacturer
218582 General Motors Corp (USA)
4619 Superior Trailer Mfg Co (USA)
31566 Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp. (USA)
FFB571TYPEA Federal Specifications Promulgated by General Services Administration Washington DC (USA)
4204 Fwd Seagrave Holdings Lp (USA)
218582 Army Weapons Command Attn Amswe-Ree-S (USA)
5310-021-8582 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
218582 General Motors Llc Dba General Motors Llc (USA)
32689 Fwd Seagrave Holdings Lp (USA)
Related Parts
5305-00-010-0658INTERCHANGEABLE
SCREW,MACHINE
100658
5905-00-053-1787INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
RHS25K
5975-00-165-3432INTERCHANGEABLE
CONNECTOR,STRIP
5120-00-273-0083INTERCHANGEABLE
AUGER,PIPE AND SEWER,HAND
4619
5940-00-291-0085INTERCHANGEABLE
TERMINAL,QUICK DISCONNECT
STP163
6640-00-435-7385INTERCHANGEABLE
OVEN,LABORATORY
5945-00-472-0677INTERCHANGEABLE
RELAY,ELECTRICAL
3N6385
5950-00-520-5296INTERCHANGEABLE
COIL,RADIO FREQUENCY
6640-00-532-7524INTERCHANGEABLE
OVEN,LABORATORY
2590-00-752-9138INTERCHANGEABLE
FILLER NECK,VEHICULAR COMPONENTS
2540-00-758-0038INTERCHANGEABLE
PAD,PEDAL
3023
6640-00-933-8665INTERCHANGEABLE
TEST TUBE
4204

Frequently Asked Questions

What is NSN 5310-00-021-8582?

NSN 5310-00-021-8582 is a Nut,plain,hexagon, manufactured by General Motors Corp, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-021-8582?

NSN 5310-00-021-8582 has 9 cross-referenced part numbers: 218582 (General Motors Corp), 4619 (Superior Trailer Mfg Co), 31566 (Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.), FFB571TYPEA (Federal Specifications Promulgated by General Services Administration Washington DC), 4204 (Fwd Seagrave Holdings Lp) and 4 more.

What NSN replaces 5310-00-021-8582?

There are 12 known substitutes for 5310-00-021-8582: 5305-00-010-0658, 5905-00-053-1787, 5975-00-165-3432 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 218582?

Key specifications for 218582: Thread Class: 2B; Width Across Flats: 0.7280 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN; Thread Series: UNF; Thread Quantity Per Inch: 20. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-021-8582 still in active supply?

NSN 5310-00-021-8582 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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