PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

LS12906-42Washer,flat

Lockheed Martin Corp · NSN 5310-01-169-8268 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-169-8268 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-169-8268. Primary manufacturer part number: LS12906-42.
Features
  • Washer,flat — FSC 5310
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY TEST FOR MAGNETIC CONTAMINATION
  • Thickness: 0.032 INCHES NOMINAL IN
  • Criticality Code Justification: SPCL
  • Test Data Document: 36659-LCP 72-1238 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.).
  • Cross-Sectional Shape Style: RECTANGULAR
  • Special Test Features: MAX MAGNETIC CONTAMINATION PERMITTED 0.8 GAMMA AT 1.0 IN. IN
  • Center Hole Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy 260 or Copper Alloy 268 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-169-8268, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Lockheed Martin Corp. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, 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
NSN5310-01-169-8268
Primary Part NumberLS12906-42
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerLockheed Martin Corp
StatusACTIVE
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY TEST FOR MAGNETIC CONTAMINATION
Thickness0.032 INCHES NOMINAL IN
Criticality Code JustificationSPCL
Test Data Document36659-LCP 72-1238 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.).
Cross-Sectional Shape StyleRECTANGULAR
Special Test FeaturesMAX MAGNETIC CONTAMINATION PERMITTED 0.8 GAMMA AT 1.0 IN. IN
Center Hole Shape StyleROUND
Overall Diameter0.307 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN
Hole Diameter0.125 INCHES NOMINAL IN
MaterialCOPPER ALLOY 260 OR COPPER ALLOY 268 OVERALL
Peripheral Shape StyleROUND
Material Document and ClassificationQQ-B-613 FED SPEC ALL MATERIAL RESPONSES OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5310-00-045-5204MS15795-904 INTERCHANGEABLE
Washer,flat
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-00-167-0698 INTERCHANGEABLE
Washer,flat
Cross-Reference Index
Part NumberManufacturer
LS12906-42 Lockheed Martin Corp (USA)
AN960B4 Aeronautical Standards Group Dept of Navy and Air Force (USA)
Related Parts
5310-00-045-5204INTERCHANGEABLE
WASHER,FLAT
MS15795-904
5310-00-167-0698INTERCHANGEABLE
WASHER,FLAT

Frequently Asked Questions

What is NSN 5310-01-169-8268?

NSN 5310-01-169-8268 is a Washer,flat, manufactured by Lockheed Martin Corp, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-169-8268?

NSN 5310-01-169-8268 has 2 cross-referenced part numbers: LS12906-42 (Lockheed Martin Corp), AN960B4 (Aeronautical Standards Group Dept of Navy and Air Force).

What NSN replaces 5310-01-169-8268?

There are 2 known substitutes for 5310-01-169-8268: 5310-00-045-5204, 5310-00-167-0698. Verify interchangeability with system specifications before substitution.

What are the specifications of LS12906-42?

Key specifications for LS12906-42: Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY TEST FOR MAGNETIC CONTAMINATION; Thickness: 0.032 INCHES NOMINAL IN; Criticality Code Justification: SPCL; Test Data Document: 36659-LCP 72-1238 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.).. 12 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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