PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

121752Washer,lock

Rolls-Royce Solutions America Inc · NSN 5310-00-012-1752 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-012-1752 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-012-1752. Primary manufacturer part number: 121752.
Features
  • Washer,lock — FSC 5310
  • Surface Treatment: CADMIUM OR ZINC OVERALL
  • Material Document and Classification: QQ-S-633,FS1060 TO FS1080-CANCELLED FED SPEC ALL MATERIAL RESPONSES OVERALL
  • Material: STEEL OVERALL
  • Material Thickness: 0.018 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN
  • Outside Diameter: 0.365 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN
  • Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
  • Hole Diameter: 0.168 INCHES MINIMUM AND 0.174 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 5310-00-012-1752, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Rolls-Royce Solutions America Inc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 14 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
NSN5310-00-012-1752
Primary Part Number121752
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerRolls-Royce Solutions America Inc
StatusCANCELLED
Surface TreatmentCADMIUM OR ZINC OVERALL
Material Document and ClassificationQQ-S-633,FS1060 TO FS1080-CANCELLED FED SPEC ALL MATERIAL RESPONSES OVERALL
MaterialSTEEL OVERALL
Material Thickness0.018 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN
Outside Diameter0.365 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN
Hardness Rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
Hole Diameter0.168 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN
Style DesignatorFLAT EXTERNAL TEETH
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3110-00-100-03642820 INTERCHANGEABLE
Cup,tapered Roller Bearing
Federal-Mogul Corp Government Sales Dept
6680-00-106-86802820 INTERCHANGEABLE
Indicator,sight,liquid
Clark-Reliance Llc Dba Jacoby-Tarbox
5910-00-191-0725BR8-500 INTERCHANGEABLE
Capacitor,fixed,electrolytic
Cornell-Dubilier Marketing Inc
3460-00-232-9714 INTERCHANGEABLE
Holder,cutting Tool
6145-00-295-2809HP3-EXBDB9 INTERCHANGEABLE
Wire,electrical
National Electrical Mfrs Assn Dba Nema
5307-00-483-717077837 INTERCHANGEABLE
Stud,shouldered
Hamilton Sundstrand Corporation Dba Collins Aerospace
2915-00-484-8495 INTERCHANGEABLE
Pin-Mi,ture Control
3030-00-528-3840 INTERCHANGEABLE
Belt,v
3030-00-528-4744 INTERCHANGEABLE
Belt,v
5985-00-543-1183SMB331817-3 INTERCHANGEABLE
Waveguide Assembly
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
Cross-Reference Index
Part NumberManufacturer
121752 General Motors Corp (USA)
121752 Navistar International Corporation Dba Navistar (USA)
121752 PRIMARY Rolls-Royce Solutions America Inc (USA)
121752 General Motors Llc Dba General Motors Llc (USA)
MILW6986TYPEB Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
219-8N Hewlett-Packard Company Dba HP (USA)
2-820 Microdot Inc Everlock Chicago Div (USA)
34938S7 Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
PC121752 Power Components (deutschland) Gmbh (DEU)
121752 Diamond Reo Truck Co (USA)
219-8N PRIMARY Agilent Technologies, Inc. Div Agilent Technologies Headquarters (USA)
121752 PRIMARY Chrysler Realty Company Llc Dba Daimler Chrysler (USA)
BEAX7C1 CAGE 00000
BEAX7C2 CAGE 00000
83029 PRIMARY John Deer Consumer Products Inc (USA)
77837 PRIMARY Stewart-Warner Corporation (USA)
Related Parts
3110-00-100-0364INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
2820
6680-00-106-8680INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
2820
5910-00-191-0725INTERCHANGEABLE
CAPACITOR,FIXED,ELECTROLYTIC
BR8-500
3460-00-232-9714INTERCHANGEABLE
HOLDER,CUTTING TOOL
6145-00-295-2809INTERCHANGEABLE
WIRE,ELECTRICAL
HP3-EXBDB9
5307-00-483-7170INTERCHANGEABLE
STUD,SHOULDERED
77837
2915-00-484-8495INTERCHANGEABLE
PIN-MI,TURE CONTROL
3030-00-528-3840INTERCHANGEABLE
BELT,V
3030-00-528-4744INTERCHANGEABLE
BELT,V
5985-00-543-1183INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
SMB331817-3
5950-00-646-2159INTERCHANGEABLE
TRANSFORMER,POWER
5774
2530-00-940-7400INTERCHANGEABLE
CYLINDER ASSEMBLY,ACTUATING,LINE
2820

Frequently Asked Questions

What is NSN 5310-00-012-1752?

NSN 5310-00-012-1752 is a Washer,lock, manufactured by Rolls-Royce Solutions America Inc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-012-1752?

NSN 5310-00-012-1752 has 16 cross-referenced part numbers: 121752 (General Motors Corp), 121752 (Navistar International Corporation Dba Navistar), 121752 (Rolls-Royce Solutions America Inc), 121752 (General Motors Llc Dba General Motors Llc), MILW6986TYPEB (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 11 more.

What NSN replaces 5310-00-012-1752?

There are 12 known substitutes for 5310-00-012-1752: 3110-00-100-0364, 6680-00-106-8680, 5910-00-191-0725 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 121752?

Key specifications for 121752: Surface Treatment: CADMIUM OR ZINC OVERALL; Material Document and Classification: QQ-S-633,FS1060 TO FS1080-CANCELLED FED SPEC ALL MATERIAL RESPONSES OVERALL; Material: STEEL OVERALL; Material Thickness: 0.018 INCHES MINIMUM AND 0.023 INCHES MAXIMUM IN. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-012-1752 still in active supply?

NSN 5310-00-012-1752 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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