PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12759-00128Washer,lock

Fastenal Company Dba Fastenal Co · NSN 5310-01-556-4629 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-556-4629 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-556-4629. Primary manufacturer part number: 12759-00128.
Features
  • Washer,lock — FSC 5310
  • 3 verified cross-references
  • Primary manufacturer: Fastenal Company Dba Fastenal Co
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Washer,lock, cataloged under National Stock Number 5310-01-556-4629, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Fastenal Company Dba Fastenal Co. This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-556-4629
Primary Part Number12759-00128
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerFastenal Company Dba Fastenal Co
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5310-00-017-8591178591 INTERCHANGEABLE
Washer,lock
Rolls-Royce Solutions America Inc
5998-00-034-7796 INTERCHANGEABLE
Circuit Card Assembly
4310-00-620-6880229875 INTERCHANGEABLE
Piston,compressor
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
5133-00-988-5701 INTERCHANGEABLE
Drill,twist
4820-01-465-45603532-028-269 INTERCHANGEABLE
Stem,fluid Valve
Velan Valve Corp.
Cross-Reference Index
Part NumberManufacturer
12759-00128 PRIMARY Fastenal Company Dba Fastenal Co (USA)
178591 Nd Defense Llc (USA)
33764 Fastenal Company Dba Fastenal Co (USA)
Related Parts
5310-00-017-8591INTERCHANGEABLE
WASHER,LOCK
178591
5998-00-034-7796INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
4310-00-620-6880INTERCHANGEABLE
PISTON,COMPRESSOR
229875
5133-00-988-5701INTERCHANGEABLE
DRILL,TWIST
4820-01-465-4560INTERCHANGEABLE
STEM,FLUID VALVE
3532-028-269

Frequently Asked Questions

What is NSN 5310-01-556-4629?

NSN 5310-01-556-4629 is a Washer,lock, manufactured by Fastenal Company Dba Fastenal Co, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-556-4629?

NSN 5310-01-556-4629 has 3 cross-referenced part numbers: 12759-00128 (Fastenal Company Dba Fastenal Co), 178591 (Nd Defense Llc), 33764 (Fastenal Company Dba Fastenal Co).

What NSN replaces 5310-01-556-4629?

There are 5 known substitutes for 5310-01-556-4629: 5310-00-017-8591, 5998-00-034-7796, 4310-00-620-6880 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12759-00128?

Key specifications for 12759-00128: End Item Identification: MRAP - UNIQUE NSN - MAXXPRO CAT I; Part Name Assigned by Controlling Agency: WASHER, 1/2 EXT-INT TOOTH LOCK. 2 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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