PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

103325Washer,lock

General Motors Corp · NSN 5310-00-820-6653 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-820-6653 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-820-6653. Primary manufacturer part number: 103325.
Features
  • Washer,lock — FSC 5310
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Hole Diameter: 0.636 INCHES MINIMUM AND 0.653 INCHES MAXIMUM IN
  • Surface Treatment: CADMIUM AND CHROMATE OVERALL
  • Departure From Cited Designator: AS MODIFIED BY SURFACE TREATMENT
  • Outside Diameter: 1.079 INCHES MAXIMUM IN
  • Material Thickness: 0.156 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1060 or Steel Comp 1561 or Steel Comp 1064 or Steel Comp 1065 or Steel Comp 1566 or Steel Comp 1069 or Steel Comp 1070 or Steel Comp 1572 or Steel Comp 1074 or Steel Comp 1075 or Steel Comp 1080 Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-820-6653, 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 50 commercial cross-references from 39 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
NSN5310-00-820-6653
Primary Part Number103325
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerGeneral Motors Corp
StatusCANCELLED
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Style DesignatorSPLIT HELICAL-RIGHT HAND
Hole Diameter0.636 INCHES MINIMUM AND 0.653 INCHES MAXIMUM IN
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Departure From Cited DesignatorAS MODIFIED BY SURFACE TREATMENT
Outside Diameter1.079 INCHES MAXIMUM IN
Material Thickness0.156 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES OVERALL
MaterialSTEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OR STEEL COMP 1065 OR STEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1572 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1080 OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5310-00-004-5034004-003005-059 INTERCHANGEABLE
Washer,lock
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
5310-00-010-3334 INTERCHANGEABLE
Washer,lock
5310-00-012-1574 INTERCHANGEABLE
Washer,lock
5310-00-021-85631018 INTERCHANGEABLE
Nut,plain,hexagon
Ambac International Corporation Div Ambac International
4320-00-060-680513217E3987 INTERCHANGEABLE
Pump Unit,centrifugal
Cecom Lr Center
5961-00-082-4073 INTERCHANGEABLE
Semiconductor Device,diode
5960-00-116-9983 INTERCHANGEABLE
Electron Tube
3110-00-144-86690210591 INTERCHANGEABLE
Bearing,ball,annular
Agco Corp Parts Opn
4320-00-152-2169J10 INTERCHANGEABLE
Shaft,transmission,pump
Circor Naval Solutions Llc Dba Warren Pumps
4330-00-158-3522J10 INTERCHANGEABLE
Filter Element,fluid
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division
Cross-Reference Index
Part NumberManufacturer
103325 General Motors Corp (USA)
904209 Allis-Chalmers Corp (USA)
23E10 Clark Equipment Co (USA)
103325 Us Army Aviation and Missile Command (USA)
YM121574 Lift-a-Loft, Llc (USA)
103325 Diamond Reo Truck Co (USA)
103325 Hercules Engine Co Inc (USA)
XX002-6897 Rdm Technology B.v. (NLD)
MS35338-50 Goriziane Group Spa (ITA)
0904209-4 Agco Corp Parts Opn (USA)
6057182 Zf Industrieantriebe Witten Gmbh (DEU)
68912 Zf Industrieantriebe Witten Gmbh (DEU)
23MS35338-50 L3harris Cincinnati Electronics Corporation (USA)
11FM1A5-8 Coltec Industries Inc. Dba Fairbanks Morse Engine Div Fairbanks Morse Engine (USA)
2001E001P16 Avionics Communications Systems Inc (USA)
35W52040 Midland Brake Inc Div of Echlin Inc (USA)
MS33338-50 Psa Peugeot-Citroen Espana, Sa (ESP)
34811S Ford Motor Company (USA)
S603 Goriziane Group Spa (ITA)
805062 American Hoist and Derrick Co
Related Parts
5310-00-004-5034INTERCHANGEABLE
WASHER,LOCK
004-003005-059
5310-00-010-3334INTERCHANGEABLE
WASHER,LOCK
5310-00-012-1574INTERCHANGEABLE
WASHER,LOCK
5310-00-021-8563INTERCHANGEABLE
NUT,PLAIN,HEXAGON
1018
4320-00-060-6805INTERCHANGEABLE
PUMP UNIT,CENTRIFUGAL
13217E3987
5961-00-082-4073INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5960-00-116-9983INTERCHANGEABLE
ELECTRON TUBE
3110-00-144-8669INTERCHANGEABLE
BEARING,BALL,ANNULAR
0210591
4320-00-152-2169INTERCHANGEABLE
SHAFT,TRANSMISSION,PUMP
J10
4330-00-158-3522INTERCHANGEABLE
FILTER ELEMENT,FLUID
J10
6930-00-166-2293INTERCHANGEABLE
ELEMENT,FILTER UNIT
J10
5310-00-167-0681INTERCHANGEABLE
WASHER,LOCK

Frequently Asked Questions

What is NSN 5310-00-820-6653?

NSN 5310-00-820-6653 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 5310-00-820-6653?

NSN 5310-00-820-6653 has 50 cross-referenced part numbers: 103325 (General Motors Corp), 904209 (Allis-Chalmers Corp), 23E10 (Clark Equipment Co), 103325 (Us Army Aviation and Missile Command), YM121574 (Lift-a-Loft, Llc) and 45 more.

What NSN replaces 5310-00-820-6653?

There are 12 known substitutes for 5310-00-820-6653: 5310-00-004-5034, 5310-00-010-3334, 5310-00-012-1574 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 103325?

Key specifications for 103325: Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM; Style Designator: SPLIT HELICAL-RIGHT HAND; End Item Identification: W/S: BOILERS, 1200 PSI; SUPPORT EQUIPMENT, B-1 AIRCRAFT; ELEVATORS, AIRCRAFT; VEHICLE, AIRCRAFT REFUELER R-14; STREAM (STD. TENSIONED REPLENISHMENT AT SEA METHOD); AIRBORNE MOBILE DIR AIR CTL (2ID), (02MJUL83)(AN/UYQ-3A); MTVR FAMILY (INCLUDES TAMCNS D0198, D1062, D1073, & D1213); FIRE PUMPS; L.P. COMPRESSORS; COMMUNICATIONS TERMINAL, SATELLITE AN/GSC-39(V)1; 2320-01-097-0260 HEMTT (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS); MRAP - COUGAR TOW; ARMORED MULTI-PURPOSE VEHICLE (AMPV); MULTIPLE LAUNCH ROCKET SYSTEM (MLRS); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE; LOGISTICS SUPPORT VESSEL A; Hole Diameter: 0.636 INCHES MINIMUM AND 0.653 INCHES MAXIMUM IN. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-820-6653 still in active supply?

NSN 5310-00-820-6653 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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