PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

271178Nut,self-Locking,assembled Washe

Am General Llc · NSN 5310-01-407-7198 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-407-7198 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-407-7198. Primary manufacturer part number: 271178.
Features
  • Nut,self-Locking,assembled Washe — FSC 5310
  • Surface Treatment: ZINC OVERALL
  • Nominal Thread Size: 0.250 INCHES IN
  • Thread Quantity Per Inch: 20
  • Nut Style: EXTERNAL TOOTH
  • Width Across Flats: 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
  • Nut Height: 0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
  • Washer Outside Diameter: 0.494 INCHES MINIMUM AND 0.506 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,self-Locking,assembled Washe, cataloged under National Stock Number 5310-01-407-7198, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Am General Llc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-407-7198
Primary Part Number271178
Item NameNut,self-Locking,assembled Washe
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerAm General Llc
StatusACTIVE
Surface TreatmentZINC OVERALL
Nominal Thread Size0.250 INCHES IN
Thread Quantity Per Inch20
Nut StyleEXTERNAL TOOTH
Width Across Flats0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
Nut Height0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
Washer Outside Diameter0.494 INCHES MINIMUM AND 0.506 INCHES MAXIMUM IN
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
MaterialSTEEL OVERALL
Thread DirectionRIGHT-HAND
Thread Class2B
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5320-00-639-2651271178 INTERCHANGEABLE
Rivet,tubular
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
Cross-Reference Index
Part NumberManufacturer
271178 General Motors Corp (USA)
271178 General Fasteners Co (USA)
456720128803 Ncb Hungary (honvedsegi Egyseges Termekkod) (HUN)
271178 PRIMARY Am General Llc (USA)
Related Parts
5320-00-639-2651INTERCHANGEABLE
RIVET,TUBULAR
271178

Frequently Asked Questions

What is NSN 5310-01-407-7198?

NSN 5310-01-407-7198 is a Nut,self-Locking,assembled Washe, manufactured by Am General Llc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-407-7198?

NSN 5310-01-407-7198 has 4 cross-referenced part numbers: 271178 (General Motors Corp), 271178 (General Fasteners Co), 456720128803 (Ncb Hungary (honvedsegi Egyseges Termekkod)), 271178 (Am General Llc).

What NSN replaces 5310-01-407-7198?

There is 1 known substitute for 5310-01-407-7198: 5320-00-639-2651. Verify interchangeability with system specifications before substitution.

What are the specifications of 271178?

Key specifications for 271178: Surface Treatment: ZINC OVERALL; Nominal Thread Size: 0.250 INCHES IN; Thread Quantity Per Inch: 20; Overall Height: 0.270 INCHES NOMINAL IN. 12 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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