PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7338679Nut,self-Locking,extended Washer

U S Army Tank Automotive Command Amsta-Im-Mm · NSN 5310-00-733-8679 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-733-8679 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-733-8679. Primary manufacturer part number: 7338679.
Features
  • Nut,self-Locking,extended Washer — FSC 5310
  • Thread Direction: RIGHT-HAND
  • Locking Feature: FREE-RUNNING ALL METAL DESIGN
  • Nominal Thread Size: 0.562 INCHES IN
  • Thread Series: UNF
  • Thread Quantity Per Inch: 18
  • Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
  • Thread Class: 3B
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 4140 or Steel Comp 8640 or Steel Comp 8740 Overall construction
General Description

The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-00-733-8679, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-733-8679
Primary Part Number7338679
Item NameNut,self-Locking,extended Washer
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerU S Army Tank Automotive Command Amsta-Im-Mm
StatusACTIVE
Thread DirectionRIGHT-HAND
Locking FeatureFREE-RUNNING ALL METAL DESIGN
Nominal Thread Size0.562 INCHES IN
Thread SeriesUNF
Thread Quantity Per Inch18
Hardness Rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
Thread Class3B
Width Across Flats0.740 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
Material Document and ClassificationQQ-S-624 FED SPEC ALL MATERIAL RESPONSES OVERALL
Countersink Angle108.0 DEGREES MINIMUM AND 112.0 DEGREES MAXIMUM NUT
MaterialSTEEL COMP 4140 OR STEEL COMP 8640 OR STEEL COMP 8740 OVERALL
Washer Outside Diameter0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Washer Thickness0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
Surface TreatmentCADMIUM OVERALL
Nut StyleHEXAGON
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
2840-00-915-9627502179 INTERCHANGEABLE
Tube,transfer Packi
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
5330-01-214-1251300810 INTERCHANGEABLE
Gasket
Moog Inc.
Cross-Reference Index
Part NumberManufacturer
502179 Teledyne Industries Inc Teledyne Power Systems Div (USA)
7338679 PRIMARY U S Army Tank Automotive Command Amsta-Im-Mm (USA)
Related Parts
2840-00-915-9627INTERCHANGEABLE
TUBE,TRANSFER PACKI
502179
5330-01-214-1251INTERCHANGEABLE
GASKET
300810

Frequently Asked Questions

What is NSN 5310-00-733-8679?

NSN 5310-00-733-8679 is a Nut,self-Locking,extended Washer, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-733-8679?

NSN 5310-00-733-8679 has 2 cross-referenced part numbers: 502179 (Teledyne Industries Inc Teledyne Power Systems Div), 7338679 (U S Army Tank Automotive Command Amsta-Im-Mm).

What NSN replaces 5310-00-733-8679?

There are 2 known substitutes for 5310-00-733-8679: 2840-00-915-9627, 5330-01-214-1251. Verify interchangeability with system specifications before substitution.

What are the specifications of 7338679?

Key specifications for 7338679: Thread Direction: RIGHT-HAND; Locking Feature: FREE-RUNNING ALL METAL DESIGN; Nominal Thread Size: 0.562 INCHES IN; Thread Series: UNF. 17 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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