PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

125629Nut,plain,hexagon

General Motors Corp · NSN 5310-00-012-5629 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-012-5629 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-012-5629. Primary manufacturer part number: 125629.
Features
  • Nut,plain,hexagon — FSC 5310
  • Nut Style: HEXAGON
  • Thread Series: UNF
  • Bearing Surface Type: CHAMFERED OR WASHER FACED
  • Thread Quantity Per Inch: 18
  • Nominal Thread Size: 0.625 INCHES IN
  • Thread Direction: RIGHT-HAND
  • Surface Treatment: CADMIUM OR ZINC OVERALL
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 5310-00-012-5629, 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 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-012-5629
Primary Part Number125629
Item NameNut,plain,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerGeneral Motors Corp
StatusACTIVE
Nut StyleHEXAGON
Thread SeriesUNF
Bearing Surface TypeCHAMFERED OR WASHER FACED
Thread Quantity Per Inch18
Nominal Thread Size0.625 INCHES IN
Thread DirectionRIGHT-HAND
Surface TreatmentCADMIUM OR ZINC OVERALL
Nondefinitive Spec/std DataA TYPE
MaterialSTEEL OVERALL
Departure From Cited DocumentAS MODIFIED BY OVER-ALL HIEGHT
Nut Height0.719 INCHES NOMINAL IN
Thread Class2B
Width Across Flats0.938 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5905-00-123-526625953-2-12 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Ward Leonard Ct Llc
5310-00-603-0621 INTERCHANGEABLE
Washer,flat
5999-00-649-9022102036 INTERCHANGEABLE
Clip,electrical
Littelfuse, Inc.
5975-00-825-69224254 INTERCHANGEABLE
Elbow,electrical Conduit
Abb Installation Products Inc
6130-01-247-4702J22HP INTERCHANGEABLE
Power Supply
Federal Signal Corporation
5340-01-273-0144 INTERCHANGEABLE
Bolt,barrel
5977-01-287-989642-54 INTERCHANGEABLE
Brush,electrical Contact
Prestolite Electric Inc
2910-01-532-7390 INTERCHANGEABLE
Injector Assembly,fuel
6220-01-651-9787425-4-1 INTERCHANGEABLE
Panel,indicating,light Transmitt
Dutch Valley Supply Co.
Cross-Reference Index
Part NumberManufacturer
125629 General Motors Corp (USA)
125629 Army Weapons Command Attn Amswe-Ree-S (USA)
FFB571TYPEA Federal Specifications Promulgated by General Services Administration Washington DC (USA)
125629 General Motors Llc Dba General Motors Llc (USA)
4254 Fwd Seagrave Holdings Lp (USA)
Related Parts
5905-00-123-5266INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
25953-2-12
5310-00-603-0621INTERCHANGEABLE
WASHER,FLAT
5999-00-649-9022INTERCHANGEABLE
CLIP,ELECTRICAL
102036
5975-00-825-6922INTERCHANGEABLE
ELBOW,ELECTRICAL CONDUIT
4254
6130-01-247-4702INTERCHANGEABLE
POWER SUPPLY
J22HP
5340-01-273-0144INTERCHANGEABLE
BOLT,BARREL
5977-01-287-9896INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
42-54
2910-01-532-7390INTERCHANGEABLE
INJECTOR ASSEMBLY,FUEL
6220-01-651-9787INTERCHANGEABLE
PANEL,INDICATING,LIGHT TRANSMITT
425-4-1

Frequently Asked Questions

What is NSN 5310-00-012-5629?

NSN 5310-00-012-5629 is a Nut,plain,hexagon, manufactured by General Motors Corp, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-012-5629?

NSN 5310-00-012-5629 has 5 cross-referenced part numbers: 125629 (General Motors Corp), 125629 (Army Weapons Command Attn Amswe-Ree-S), FFB571TYPEA (Federal Specifications Promulgated by General Services Administration Washington DC), 125629 (General Motors Llc Dba General Motors Llc), 4254 (Fwd Seagrave Holdings Lp).

What NSN replaces 5310-00-012-5629?

There are 9 known substitutes for 5310-00-012-5629: 5905-00-123-5266, 5310-00-603-0621, 5999-00-649-9022 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 125629?

Key specifications for 125629: Nut Style: HEXAGON; Thread Series: UNF; Bearing Surface Type: CHAMFERED OR WASHER FACED; Thread Quantity Per Inch: 18. 13 total characteristics are documented in the Federal Logistics Information System.

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