PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS35337-78Washer,lock

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5310-00-734-5661 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-734-5661 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-734-5661. Primary manufacturer part number: MS35337-78.
Features
  • Washer,lock — FSC 5310
  • Surface Treatment: PASSIVATE OVERALL
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Material: STEEL CORROSION RESISTING OVERALL
  • Material Thickness: 0.020 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN
  • Outside Diameter: 0.202 INCHES NOMINAL IN
  • Hole Diameter: 0.115 INCHES MINIMUM AND 0.124 INCHES MAXIMUM IN
  • 1 verified cross-reference
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 5310-00-734-5661, 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 6 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-734-5661
Primary Part NumberMS35337-78
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
Surface TreatmentPASSIVATE OVERALL
Style DesignatorSPLIT HELICAL-RIGHT HAND
MaterialSTEEL CORROSION RESISTING OVERALL
Material Thickness0.020 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN
Outside Diameter0.202 INCHES NOMINAL IN
Hole Diameter0.115 INCHES MINIMUM AND 0.124 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5310-00-058-2949092-26769 INTERCHANGEABLE
Washer,lock
Moog Inc
5310-00-933-8118355-221-0023 INTERCHANGEABLE
Washer,lock
Meggitt (new Hampshire), Inc
5310-00-965-1805 INTERCHANGEABLE
Washer,lock
Cross-Reference Index
Part NumberManufacturer
MS35337-78 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5310-00-058-2949INTERCHANGEABLE
WASHER,LOCK
092-26769
5310-00-933-8118INTERCHANGEABLE
WASHER,LOCK
355-221-0023
5310-00-965-1805INTERCHANGEABLE
WASHER,LOCK

Frequently Asked Questions

What is NSN 5310-00-734-5661?

NSN 5310-00-734-5661 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 5310-00-734-5661?

NSN 5310-00-734-5661 has 1 cross-referenced part number: MS35337-78 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5310-00-734-5661?

There are 3 known substitutes for 5310-00-734-5661: 5310-00-058-2949, 5310-00-933-8118, 5310-00-965-1805. Verify interchangeability with system specifications before substitution.

What are the specifications of MS35337-78?

Key specifications for MS35337-78: Surface Treatment: PASSIVATE OVERALL; Style Designator: SPLIT HELICAL-RIGHT HAND; Material: STEEL CORROSION RESISTING OVERALL; Material Thickness: 0.020 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN. 7 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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