PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS35337-79Washer,lock

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5310-00-734-5662 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-734-5662 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-734-5662. Primary manufacturer part number: MS35337-79.
Features
  • Washer,lock — FSC 5310
  • Outside Diameter: 0.239 INCHES NOMINAL IN
  • Material Thickness: 0.025 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
  • Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Material Document and Classification: FED STD 66,CRES 300 SERIES MIL STD SINGLE MATERIAL RESPONSE OVERALL
  • Departure From Cited Designator: AS MODIFIED BY SPECIAL TEST FEATURES
  • Hole Diameter: 0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-734-5662, 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 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-734-5662
Primary Part NumberMS35337-79
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 Diameter0.239 INCHES NOMINAL IN
Material Thickness0.025 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Style DesignatorSPLIT HELICAL-RIGHT HAND
Material Document and ClassificationFED STD 66,CRES 300 SERIES MIL STD SINGLE MATERIAL RESPONSE OVERALL
Departure From Cited DesignatorAS MODIFIED BY SPECIAL TEST FEATURES
Hole Diameter0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN
MaterialSTEEL CORROSION RESISTING OVERALL
Hardness Rating35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
Surface TreatmentPASSIVATE OVERALL
Special Test FeaturesFLEET BALLISTIC MISSILE QUALITY AS IDENTIFIED BYQUALITY CONTROL NO. POSO 913279
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5310-00-043-175424-00044-007 INTERCHANGEABLE
Washer,lock
Raytheon Company
5310-00-929-6395MS35338-136 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
MS35337-79 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5310-00-043-1754INTERCHANGEABLE
WASHER,LOCK
24-00044-007
5310-00-929-6395INTERCHANGEABLE
WASHER,LOCK
MS35338-136

Frequently Asked Questions

What is NSN 5310-00-734-5662?

NSN 5310-00-734-5662 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 5310-00-734-5662?

NSN 5310-00-734-5662 has 1 cross-referenced part number: MS35337-79 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5310-00-734-5662?

There are 2 known substitutes for 5310-00-734-5662: 5310-00-043-1754, 5310-00-929-6395. Verify interchangeability with system specifications before substitution.

What are the specifications of MS35337-79?

Key specifications for MS35337-79: Outside Diameter: 0.239 INCHES NOMINAL IN; Material Thickness: 0.025 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: SPLIT HELICAL-RIGHT HAND. 11 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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