PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

508371Washer,flat

Hamilton Sundstrand Corporation Dba Collins Aerospace · NSN 5310-00-856-3674 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-856-3674 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-856-3674. Primary manufacturer part number: 508371.
Features
  • Washer,flat — FSC 5310
  • Overall Diameter: 0.326 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
  • Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
  • Thickness: 0.029 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
  • Surface Treatment Document and Classification: QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Surface Treatment: CADMIUM OVERALL
  • Cross-Sectional Shape Style: RECTANGULAR
  • Material: STEEL COMP 1020 OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1020 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-856-3674, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 10 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-856-3674
Primary Part Number508371
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHamilton Sundstrand Corporation Dba Collins Aerospace
StatusACTIVE
Overall Diameter0.326 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Thickness0.029 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationQQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Surface TreatmentCADMIUM OVERALL
Cross-Sectional Shape StyleRECTANGULAR
MaterialSTEEL COMP 1020 OVERALL
Hole Diameter0.200 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Peripheral Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5950-00-901-4735SMD375000 INTERCHANGEABLE
Reactor
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4130-01-382-255750837-1 INTERCHANGEABLE
Condenser,refrigeration
Cospolich Inc.
Cross-Reference Index
Part NumberManufacturer
508371 PRIMARY Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)
Related Parts
5950-00-901-4735INTERCHANGEABLE
REACTOR
SMD375000
4130-01-382-2557INTERCHANGEABLE
CONDENSER,REFRIGERATION
50837-1

Frequently Asked Questions

What is NSN 5310-00-856-3674?

NSN 5310-00-856-3674 is a Washer,flat, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-856-3674?

NSN 5310-00-856-3674 has 1 cross-referenced part number: 508371 (Hamilton Sundstrand Corporation Dba Collins Aerospace).

What NSN replaces 5310-00-856-3674?

There are 2 known substitutes for 5310-00-856-3674: 5950-00-901-4735, 4130-01-382-2557. Verify interchangeability with system specifications before substitution.

What are the specifications of 508371?

Key specifications for 508371: Overall Diameter: 0.326 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN; Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL; Thickness: 0.029 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 10 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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