PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NASM35338-155Washer,lock

The Boeing Company Div Defense · NSN 5310-01-734-2976 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-734-2976 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-734-2976. Primary manufacturer part number: NASM35338-155.
Features
  • Washer,lock — FSC 5310
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Specification/standard Data: 80205-NAS-35338 NATIONAL STD/SPEC
  • Material Thickness: 0.031 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
  • Outside Diameter: 0.250 INCHES MAXIMUM IN
  • Hole Diameter: 0.141 INCHES MINIMUM AND 0.148 INCHES MAXIMUM IN
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
  • Material: STEEL CORROSION RESISTING OVERALL
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 5310-01-734-2976, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is The Boeing Company Div Defense. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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
NSN5310-01-734-2976
Primary Part NumberNASM35338-155
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerThe Boeing Company Div Defense
StatusACTIVE
Style DesignatorSPLIT HELICAL-RIGHT HAND
Specification/standard Data80205-NAS-35338 NATIONAL STD/SPEC
Material Thickness0.031 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
Outside Diameter0.250 INCHES MAXIMUM IN
Hole Diameter0.141 INCHES MINIMUM AND 0.148 INCHES MAXIMUM IN
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
MaterialSTEEL CORROSION RESISTING OVERALL
Surface TreatmentPASSIVATE OVERALL
Surface Treatment Document and ClassificationAMS 2700 NATIONAL STD/SPEC SINGLE TREATMENT 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
NASM35338-155 PRIMARY The Boeing Company Div Defense (USA)
NASM35338-155 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
NASM35338 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
NASM35338 The Boeing Company Div Defense (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
5310-01-660-7393INTERCHANGEABLE
WASHER,LOCK
MS35338-42P

Frequently Asked Questions

What is NSN 5310-01-734-2976?

NSN 5310-01-734-2976 is a Washer,lock, manufactured by The Boeing Company Div Defense, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-734-2976?

NSN 5310-01-734-2976 has 4 cross-referenced part numbers: NASM35338-155 (The Boeing Company Div Defense), NASM35338-155 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), NASM35338 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), NASM35338 (The Boeing Company Div Defense).

What NSN replaces 5310-01-734-2976?

There are 11 known substitutes for 5310-01-734-2976: 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 NASM35338-155?

Key specifications for NASM35338-155: Part Name Assigned by Controlling Agency: WASHER,LOCK-SPRING,HELICAL,REGULAR MEDIUM SERIES; Style Designator: SPLIT HELICAL-RIGHT HAND; Specification/standard Data: 80205-NAS-35338 NATIONAL STD/SPEC; Material Thickness: 0.031 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN. 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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