PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS35338-42PWasher,lock

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5310-01-660-7393 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-660-7393 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-660-7393. Primary manufacturer part number: MS35338-42P.
Features
  • Washer,lock — FSC 5310
  • Outside Diameter: 0.293 INCHES NOMINAL IN
  • Material Thickness: 0.040 INCHES NOMINAL IN
  • Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM
  • Hole Diameter: 0.167 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN
  • Material: STEEL OVERALL
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Surface Treatment: CADMIUM OVERALL
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 5310-01-660-7393, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-660-7393
Primary Part NumberMS35338-42P
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusACTIVE
Outside Diameter0.293 INCHES NOMINAL IN
Material Thickness0.040 INCHES NOMINAL IN
Hardness Rating35.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM
Hole Diameter0.167 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Style DesignatorSPLIT HELICAL-RIGHT HAND
Surface TreatmentCADMIUM OVERALL
Material Document and ClassificationASME B18.21.1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5310-00-011-6125MS35338-71 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-00-407-956612759-00080 INTERCHANGEABLE
Washer,lock
Fastenal Company Dba Fastenal Co
5310-00-549-6790MS35338-167 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-00-582-5965196 INTERCHANGEABLE
Washer,lock
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5310-00-584-7890MS35338-57 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-00-637-9541019-00004-42 INTERCHANGEABLE
Washer,lock
Kovatch Corp.
5310-00-933-8119MS35338-137 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-01-515-3880MS35338-84 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-01-565-5501MS35338-48 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-01-570-1857NASM35338-148B INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
MS35338-42P PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
MS35338-42P Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
NASM35338 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
Related Parts
5310-00-011-6125INTERCHANGEABLE
WASHER,LOCK
MS35338-71
5310-00-407-9566INTERCHANGEABLE
WASHER,LOCK
12759-00080
5310-00-549-6790INTERCHANGEABLE
WASHER,LOCK
MS35338-167
5310-00-582-5965INTERCHANGEABLE
WASHER,LOCK
196
5310-00-584-7890INTERCHANGEABLE
WASHER,LOCK
MS35338-57
5310-00-637-9541INTERCHANGEABLE
WASHER,LOCK
019-00004-42
5310-00-933-8119INTERCHANGEABLE
WASHER,LOCK
MS35338-137
5310-01-515-3880INTERCHANGEABLE
WASHER,LOCK
MS35338-84
5310-01-565-5501INTERCHANGEABLE
WASHER,LOCK
MS35338-48
5310-01-570-1857INTERCHANGEABLE
WASHER,LOCK
NASM35338-148B
5310-01-734-2976INTERCHANGEABLE
WASHER,LOCK
NASM35338-155

Frequently Asked Questions

What is NSN 5310-01-660-7393?

NSN 5310-01-660-7393 is a Washer,lock, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-660-7393?

NSN 5310-01-660-7393 has 3 cross-referenced part numbers: MS35338-42P (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), MS35338-42P (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), NASM35338 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use).

What NSN replaces 5310-01-660-7393?

There are 11 known substitutes for 5310-01-660-7393: 5310-00-011-6125, 5310-00-407-9566, 5310-00-549-6790 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS35338-42P?

Key specifications for MS35338-42P: Outside Diameter: 0.293 INCHES NOMINAL IN; Material Thickness: 0.040 INCHES NOMINAL IN; Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM; Hole Diameter: 0.167 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN. 9 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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