PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

276342-1Washer,flat

Thales Usa, Inc. Div Air Mobility Solutions ("ams") · NSN 5310-00-726-3687 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-726-3687 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-726-3687. Primary manufacturer part number: 276342-1.
Features
  • Washer,flat — FSC 5310
  • Hole Diameter: 0.129 INCHES NOMINAL IN
  • Thickness: 0.031 INCHES MINIMUM AND 0.033 INCHES MAXIMUM IN
  • Heat Treatment: AS FABRICATED
  • Surface Finish: 63.0 MICROINCHES ALL SURFACES
  • Material: STEEL CORROSION RESISTING OVERALL
  • Surface Treatment: PASSIVATE OVERALL
  • Peripheral Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-726-3687, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Thales Usa, Inc. Div Air Mobility Solutions ("ams"). Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-726-3687
Primary Part Number276342-1
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerThales Usa, Inc. Div Air Mobility Solutions ("ams")
StatusCANCELLED
Hole Diameter0.129 INCHES NOMINAL IN
Thickness0.031 INCHES MINIMUM AND 0.033 INCHES MAXIMUM IN
Heat TreatmentAS FABRICATED
Surface Finish63.0 MICROINCHES ALL SURFACES
MaterialSTEEL CORROSION RESISTING OVERALL
Surface TreatmentPASSIVATE OVERALL
Peripheral Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Overall Diameter0.218 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5950-00-169-831619207 INTERCHANGEABLE
Transformer,audio Frequency
Freed Transformer Co
6145-00-295-0851UL62SOOW6BCF3/14EPCPE INTERCHANGEABLE
Cable,power,electrical
Underwriters Laboratories Inc
2520-00-451-77157973789 INTERCHANGEABLE
Housing
U S Army Tank Automotive Command Amsta-Im-Mm
5910-00-557-595519207 INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
Thales Usa, Inc. Div Air Mobility Solutions ("ams")
5365-01-071-7569 INTERCHANGEABLE
Spacer,plate
5330-01-260-5693 INTERCHANGEABLE
Gasket
6650-01-327-032219207 INTERCHANGEABLE
Cell Assembly,optical Instrument
Gamma Scientific Inc
7930-01-381-58037000052378 INTERCHANGEABLE
Multi-Surface Sanitizer and Clea
3m Company
5340-01-520-577619207 INTERCHANGEABLE
Bar,extension,pipe Hanger
Heil Trailer International Llc
6220-01-576-906610223 INTERCHANGEABLE
Light,utility,vehicular
Generac Mobile Products, Llc
Cross-Reference Index
Part NumberManufacturer
276342-1 Thales Usa, Inc. Div Air Mobility Solutions ("ams") (USA)
19207 L3harris Technologies, Inc. Div Space and Airborne Systems (USA)
202-11-95 Recon/optical, Inc. (USA)
Related Parts
5950-00-169-8316INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
19207
6145-00-295-0851INTERCHANGEABLE
CABLE,POWER,ELECTRICAL
UL62SOOW6BCF3/14EPCPE
2520-00-451-7715INTERCHANGEABLE
HOUSING
7973789
5910-00-557-5955INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
19207
5365-01-071-7569INTERCHANGEABLE
SPACER,PLATE
5330-01-260-5693INTERCHANGEABLE
GASKET
6650-01-327-0322INTERCHANGEABLE
CELL ASSEMBLY,OPTICAL INSTRUMENT
19207
7930-01-381-5803INTERCHANGEABLE
MULTI-SURFACE SANITIZER AND CLEA
7000052378
5340-01-520-5776INTERCHANGEABLE
BAR,EXTENSION,PIPE HANGER
19207
6220-01-576-9066INTERCHANGEABLE
LIGHT,UTILITY,VEHICULAR
10223
5930-01-585-8139INTERCHANGEABLE
ADAPTER,SWITCH ACTUATOR
05-02-06-00
4920-01-645-0553INTERCHANGEABLE
INLET,DUST COLLECTOR

Frequently Asked Questions

What is NSN 5310-00-726-3687?

NSN 5310-00-726-3687 is a Washer,flat, manufactured by Thales Usa, Inc. Div Air Mobility Solutions ("ams"), classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-726-3687?

NSN 5310-00-726-3687 has 3 cross-referenced part numbers: 276342-1 (Thales Usa, Inc. Div Air Mobility Solutions ("ams")), 19207 (L3harris Technologies, Inc. Div Space and Airborne Systems), 202-11-95 (Recon/optical, Inc.).

What NSN replaces 5310-00-726-3687?

There are 12 known substitutes for 5310-00-726-3687: 5950-00-169-8316, 6145-00-295-0851, 2520-00-451-7715 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 276342-1?

Key specifications for 276342-1: Hole Diameter: 0.129 INCHES NOMINAL IN; Thickness: 0.031 INCHES MINIMUM AND 0.033 INCHES MAXIMUM IN; Heat Treatment: AS FABRICATED; Surface Finish: 63.0 MICROINCHES ALL SURFACES. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-726-3687 still in active supply?

NSN 5310-00-726-3687 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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