PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

121753Washer,lock

General Motors Corp · NSN 5310-00-209-0786 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-209-0786 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-209-0786. Primary manufacturer part number: 121753.
Features
  • Washer,lock — FSC 5310
  • Material: STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1055 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OVERALL
  • Outside Diameter: 0.494 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
  • Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL
  • Hole Diameter: 0.256 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
  • Material Thickness: 0.023 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
  • Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
  • Style Designator: FLAT EXTERNAL TEETH
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1050 or Steel Comp 1551 or Steel Comp 1552 or Steel Comp 1053 or Steel Comp 1055 or Steel Comp 1059 or Steel Comp 1060 or Steel Comp 1561 or Steel Comp 1064 Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-209-0786, 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 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 34 commercial cross-references from 26 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-209-0786
Primary Part Number121753
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerGeneral Motors Corp
StatusCANCELLED
MaterialSTEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1055 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OVERALL
Outside Diameter0.494 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES OVERALL
Hole Diameter0.256 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
Material Thickness0.023 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
Hardness Rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
Style DesignatorFLAT EXTERNAL TEETH
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5331-00-001-5007 INTERCHANGEABLE
O-Ring
5310-00-011-46040914105-2 INTERCHANGEABLE
Washer,lock
Agco Corp Parts Opn
5340-00-054-1815 INTERCHANGEABLE
Standoff,threaded,spacing
4730-00-064-857914-97-0210ASSYF INTERCHANGEABLE
Coupling Assembly,tube,flexible
Electric Boat Corporation Div General Dynamics Electric Boat
4720-00-200-0368 INTERCHANGEABLE
Hose,nonmetallic
5940-00-259-84531930C INTERCHANGEABLE
Terminal,stud
Goe Engineering Co Inc
6810-00-300-6150 INTERCHANGEABLE
Dimethylglyoxime
2930-00-364-7296193-0008 INTERCHANGEABLE
Gage
Cummins Power Generation Inc.
4310-00-371-6610 INTERCHANGEABLE
Ring,piston
3040-00-374-552510506-20061 INTERCHANGEABLE
Shaft,hinged Arm
Johnson C S Co Inc
Cross-Reference Index
Part NumberManufacturer
121753 General Motors Corp (USA)
801625-551-003 PC NO 17A Reliance Electric Company Dba Reliance & Dodge Brands (USA)
1114-13 Itw Shakeproof Automotive Products (USA)
114604 Zf Industrieantriebe Witten Gmbh (DEU)
373-5042-000 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
853-1013 Cummins Power Generation Inc. (USA)
1114-00 Illinois Tool Works Inc (USA)
407 127 Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company (USA)
402350207 Israel Military Industries Ltd Dba Taas - Israel Industries Ltd - Formerly (ISR)
373-5042-00 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
MS35335-33 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
853074 Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament (USA)
76574 International Business Machines Corp Parts Order Center Dept E - 54 (USA)
5310PL0550280 Jednolity Indeks Materialowy - Uniform Material Index (POL)
104-3S416B Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
5310002090786 E.c.a Etablissement Centrald'approvisionnement Des Forces Armee
MS35335-19 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
FFW100 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
0076574 International Business Machines Corp Parts Order Center Dept E - 54 (USA)
5310001670870 E.c.a Etablissement Centrald'approvisionnement Des Forces Armee
Related Parts
5331-00-001-5007INTERCHANGEABLE
O-RING
5310-00-011-4604INTERCHANGEABLE
WASHER,LOCK
0914105-2
5340-00-054-1815INTERCHANGEABLE
STANDOFF,THREADED,SPACING
4730-00-064-8579INTERCHANGEABLE
COUPLING ASSEMBLY,TUBE,FLEXIBLE
14-97-0210ASSYF
4720-00-200-0368INTERCHANGEABLE
HOSE,NONMETALLIC
5940-00-259-8453INTERCHANGEABLE
TERMINAL,STUD
1930C
6810-00-300-6150INTERCHANGEABLE
DIMETHYLGLYOXIME
2930-00-364-7296INTERCHANGEABLE
GAGE
193-0008
4310-00-371-6610INTERCHANGEABLE
RING,PISTON
3040-00-374-5525INTERCHANGEABLE
SHAFT,HINGED ARM
10506-20061
4730-00-374-6127INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
19-24
2990-00-478-8339INTERCHANGEABLE
CYLINDER,REGULATING VALVE
1938

Frequently Asked Questions

What is NSN 5310-00-209-0786?

NSN 5310-00-209-0786 is a Washer,lock, manufactured by General Motors Corp, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-209-0786?

NSN 5310-00-209-0786 has 34 cross-referenced part numbers: 121753 (General Motors Corp), 801625-551-003 PC NO 17A (Reliance Electric Company Dba Reliance & Dodge Brands), 1114-13 (Itw Shakeproof Automotive Products), 114604 (Zf Industrieantriebe Witten Gmbh), 373-5042-000 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems) and 29 more.

What NSN replaces 5310-00-209-0786?

There are 12 known substitutes for 5310-00-209-0786: 5331-00-001-5007, 5310-00-011-4604, 5340-00-054-1815 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 121753?

Key specifications for 121753: End Item Identification: W/S:AIRCRAFT, (AC-130H, MC-130H, EC-130E, HC-130); COMPRESSOR, RECIPROCATING M4; AIRBORNE MOBILE DIR AIR SPT CTL (2ID), (02M JUL83)(AN/UYQ-3A); AVIATION ENGINE TEST SYSTEMS (AETS); SUPPORT EQUIPMENT, B-1 AIRCRAFT; CENTRAL MESSAGE SWITCH, AN/TYC-39A; BOILE; MEDIUM MINE PROTECTED VEHICLE - MMPV; ARMORED MULTI-PURPOSE VEHICLE (AMPV); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE A; Material: STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1055 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OVERALL; Outside Diameter: 0.494 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN; Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-209-0786 still in active supply?

NSN 5310-00-209-0786 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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