PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS35339-12Washer,lock

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5310-00-010-3331 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-010-3331 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-010-3331. Primary manufacturer part number: MS35339-12.
Features
  • Washer,lock — FSC 5310
  • Outside Diameter: 1.100 INCHES MAXIMUM IN
  • Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Material: STEEL OVERALL
  • Nondefinitive Spec/std Data: 3 STYLE AND A CLASS
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
  • Material Thickness: 0.189 INCHES MINIMUM AND 0.199 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 5310-00-010-3331, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 11 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-010-3331
Primary Part NumberMS35339-12
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Outside Diameter1.100 INCHES MAXIMUM IN
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Style DesignatorSPLIT HELICAL-RIGHT HAND
MaterialSTEEL OVERALL
Nondefinitive Spec/std Data3 STYLE AND A CLASS
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Material Thickness0.189 INCHES MINIMUM AND 0.199 INCHES MAXIMUM IN
Hole Diameter0.636 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5315-00-247-5482 INTERCHANGEABLE
Pin,straight,headless
5310-00-275-0016TW110 INTERCHANGEABLE
Washer,key
The Timken Corporation
2930-00-392-50008152B INTERCHANGEABLE
Pump,cooling System,engine
Elgin Industries Inc. Dba
5961-00-405-1213 INTERCHANGEABLE
Rectifier,semiconductor Device,u
3120-01-221-1801910808 INTERCHANGEABLE
Bushing,sleeve
Calgon Carbon Uv Technologies Llc Dba Hyde Marine
Cross-Reference Index
Part NumberManufacturer
MS35339-12 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
W110 Corbitt Co Inc (USA)
DX263 Diamond Reo Truck Co (USA)
103331 General Motors Corp (USA)
W110 Kenworth Truck Co a Div of Paccar Inc (USA)
WA410 Meritor Heavy Vehicle Systems, Llc (USA)
WA410 Meritor Industrial Products, Llc (USA)
103331 Chrysler Realty Company Llc Dba Daimler Chrysler (USA)
910808 Allis-Chalmers Corp (USA)
0910808 Agco Corp Parts Opn (USA)
103331 Terex Corp (USA)
Related Parts
5315-00-247-5482INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
5310-00-275-0016INTERCHANGEABLE
WASHER,KEY
TW110
2930-00-392-5000INTERCHANGEABLE
PUMP,COOLING SYSTEM,ENGINE
8152B
5961-00-405-1213INTERCHANGEABLE
RECTIFIER,SEMICONDUCTOR DEVICE,U
3120-01-221-1801INTERCHANGEABLE
BUSHING,SLEEVE
910808

Frequently Asked Questions

What is NSN 5310-00-010-3331?

NSN 5310-00-010-3331 is a Washer,lock, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-010-3331?

NSN 5310-00-010-3331 has 11 cross-referenced part numbers: MS35339-12 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), W110 (Corbitt Co Inc), DX263 (Diamond Reo Truck Co), 103331 (General Motors Corp), W110 (Kenworth Truck Co a Div of Paccar Inc) and 6 more.

What NSN replaces 5310-00-010-3331?

There are 5 known substitutes for 5310-00-010-3331: 5315-00-247-5482, 5310-00-275-0016, 2930-00-392-5000 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS35339-12?

Key specifications for MS35339-12: Outside Diameter: 1.100 INCHES MAXIMUM IN; Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL; Style Designator: SPLIT HELICAL-RIGHT HAND; Material: STEEL OVERALL. 8 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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