PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

121841Washer,lock

Diamond Reo Truck Co · NSN 5310-00-764-5694 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-764-5694 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-764-5694. Primary manufacturer part number: 121841.
Features
  • Washer,lock — FSC 5310
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Material Thickness: 0.040 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN
  • Surface Treatment Document and Classification: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Material: STEEL OVERALL
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
  • Surface Treatment: CADMIUM OVERALL
  • Outside Diameter: 0.296 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-764-5694, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Diamond Reo Truck Co. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 36 commercial cross-references from 22 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
NSN5310-00-764-5694
Primary Part Number121841
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerDiamond Reo Truck Co
StatusCANCELLED
Style DesignatorSPLIT HELICAL-RIGHT HAND
Material Thickness0.040 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationQQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MaterialSTEEL OVERALL
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Surface TreatmentCADMIUM OVERALL
Outside Diameter0.296 INCHES MAXIMUM IN
Hole Diameter0.168 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5310-00-045-3299MS35338-42 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
6510-00-193-8973 INTERCHANGEABLE
Sponge,surgical
5110-00-204-0616 INTERCHANGEABLE
File,hand
5310-00-637-9541019-00004-42 INTERCHANGEABLE
Washer,lock
Kovatch Corp.
4730-00-708-30992435 INTERCHANGEABLE
Plug,screw
Marvel Manufacturing Co Div the Marvel Manufacturing Company
5940-00-828-48232435 INTERCHANGEABLE
Terminal Board
Entron Industries Limited Partnership Dba Entron Industries Property Div
1650-00-897-54042435 INTERCHANGEABLE
Parts Kit,linear Actuating Cylin
Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc
6625-00-931-448902435 INTERCHANGEABLE
Ammeter
Simpson Electric Company, Inc.
9535-00-969-4573435 INTERCHANGEABLE
Foil,metal
Alturdyne International
5935-01-077-26412435 INTERCHANGEABLE
Connector,receptacle,electrical
Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division
Cross-Reference Index
Part NumberManufacturer
121841 Diamond Reo Truck Co (USA)
34802S7 Ford Motor Company (USA)
1900788 Borgwarner Pds (anderson), L.l.c. (USA)
12Z3038-21 Naval Ordnance Standards (USA)
1900788 General Motors Corp Delco Remy Div (USA)
121841 Fruehauf Corp (USA)
34802S8 Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
224866 Brockway Motor Trucks Div of Mack Trucks Inc (USA)
1978HX Oshkosh Corp (USA)
46R285 Colt Industries Inc Holley Automotive Div (USA)
1913982 General Motors Corp Delco Remy Div (USA)
1904623 Borgwarner Pds (anderson), L.l.c. (USA)
PC121841 Power Components (deutschland) Gmbh (DEU)
121841 Navistar International Corporation Dba Navistar (USA)
B298-6 Met-Pro Corporation (USA)
Z093002435 Prestolite Electric Inc (USA)
34802S7 Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
WA5-4CA Ambac International Corporation Div Ambac International (USA)
7348901 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
1978HX Oshkosh Defense Llc (USA)
Related Parts
5310-00-045-3299INTERCHANGEABLE
WASHER,LOCK
MS35338-42
6510-00-193-8973INTERCHANGEABLE
SPONGE,SURGICAL
5110-00-204-0616INTERCHANGEABLE
FILE,HAND
5310-00-637-9541INTERCHANGEABLE
WASHER,LOCK
019-00004-42
4730-00-708-3099INTERCHANGEABLE
PLUG,SCREW
2435
5940-00-828-4823INTERCHANGEABLE
TERMINAL BOARD
2435
1650-00-897-5404INTERCHANGEABLE
PARTS KIT,LINEAR ACTUATING CYLIN
2435
6625-00-931-4489INTERCHANGEABLE
AMMETER
02435
9535-00-969-4573INTERCHANGEABLE
FOIL,METAL
435
5935-01-077-2641INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
2435
5342-01-169-3166INTERCHANGEABLE
PLATE,INSTRUMENT PA
02435
3120-01-196-0198INTERCHANGEABLE
BUSHING,SLEEVE

Frequently Asked Questions

What is NSN 5310-00-764-5694?

NSN 5310-00-764-5694 is a Washer,lock, manufactured by Diamond Reo Truck Co, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-764-5694?

NSN 5310-00-764-5694 has 36 cross-referenced part numbers: 121841 (Diamond Reo Truck Co), 34802S7 (Ford Motor Company), 1900788 (Borgwarner Pds (anderson), L.l.c.), 12Z3038-21 (Naval Ordnance Standards), 1900788 (General Motors Corp Delco Remy Div) and 31 more.

What NSN replaces 5310-00-764-5694?

There are 12 known substitutes for 5310-00-764-5694: 5310-00-045-3299, 6510-00-193-8973, 5110-00-204-0616 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 121841?

Key specifications for 121841: Style Designator: SPLIT HELICAL-RIGHT HAND; Material Thickness: 0.040 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Material: STEEL OVERALL. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-764-5694 still in active supply?

NSN 5310-00-764-5694 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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