PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

424221Washer,lock

General Motors Llc Dba General Motors Llc · NSN 5310-00-209-0787 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-209-0787 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-209-0787. Primary manufacturer part number: 424221.
Features
  • Washer,lock — FSC 5310
  • Material: COPPER ALLOY OVERALL
  • Outside Diameter: 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
  • Material Thickness: 0.018 INCHES NOMINAL IN
  • Hole Diameter: 0.129 INCHES MINIMUM AND 0.136 INCHES MAXIMUM IN
  • Style Designator: FLAT INTERNAL TEETH
  • 3 verified cross-references
  • Primary manufacturer: General Motors Llc Dba General Motors Llc
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-209-0787, 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 Llc Dba General Motors Llc. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). 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: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-209-0787
Primary Part Number424221
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerGeneral Motors Llc Dba General Motors Llc
StatusCANCELLED
MaterialCOPPER ALLOY OVERALL
Outside Diameter0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
Material Thickness0.018 INCHES NOMINAL IN
Hole Diameter0.129 INCHES MINIMUM AND 0.136 INCHES MAXIMUM IN
Style DesignatorFLAT INTERNAL TEETH
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5325-00-558-8826MS21209C0620 INTERCHANGEABLE
Insert,screw Thread
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5805-01-048-0611294003-823 INTERCHANGEABLE
Holder,telephone
Stromberg-Carlson Corp a Plessey Telecommunications Co
2590-01-539-7865190500 INTERCHANGEABLE
Leg,inner,shoe,jack Support
Hammerblow Corp the
5310-01-554-551342422-1 INTERCHANGEABLE
Nut,plain,hexagon
Barnes Group Inc. Dba Barnes Distribution
6645-01-600-7811 INTERCHANGEABLE
Clock,wall
Cross-Reference Index
Part NumberManufacturer
424221 General Motors Llc Dba General Motors Llc (USA)
1905-00 Itw Shakeproof Automotive Products (USA)
1905TYPE19 Itw Shakeproof Automotive Products (USA)
Related Parts
5325-00-558-8826INTERCHANGEABLE
INSERT,SCREW THREAD
MS21209C0620
5805-01-048-0611INTERCHANGEABLE
HOLDER,TELEPHONE
294003-823
2590-01-539-7865INTERCHANGEABLE
LEG,INNER,SHOE,JACK SUPPORT
190500
5310-01-554-5513INTERCHANGEABLE
NUT,PLAIN,HEXAGON
42422-1
6645-01-600-7811INTERCHANGEABLE
CLOCK,WALL

Frequently Asked Questions

What is NSN 5310-00-209-0787?

NSN 5310-00-209-0787 is a Washer,lock, manufactured by General Motors Llc Dba General Motors Llc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-209-0787?

NSN 5310-00-209-0787 has 3 cross-referenced part numbers: 424221 (General Motors Llc Dba General Motors Llc), 1905-00 (Itw Shakeproof Automotive Products), 1905TYPE19 (Itw Shakeproof Automotive Products).

What NSN replaces 5310-00-209-0787?

There are 5 known substitutes for 5310-00-209-0787: 5325-00-558-8826, 5805-01-048-0611, 2590-01-539-7865 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 424221?

Key specifications for 424221: Material: COPPER ALLOY OVERALL; Outside Diameter: 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN; Material Thickness: 0.018 INCHES NOMINAL IN; Hole Diameter: 0.129 INCHES MINIMUM AND 0.136 INCHES MAXIMUM IN. 5 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-209-0787 still in active supply?

NSN 5310-00-209-0787 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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