PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

855012Washer,flat

General Motors Corp · NSN 5310-00-171-3679 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-171-3679 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-171-3679. Primary manufacturer part number: 855012.
Features
  • Washer,flat — FSC 5310
  • Thickness: 0.0495 INCHES MINIMUM AND 0.0525 INCHES MAXIMUM IN
  • Material: COPPER OVERALL
  • Peripheral Shape Style: ROUND
  • Hole Diameter: 0.251 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
  • Center Hole Shape Style: ROUND
  • Overall Diameter: 0.381 INCHES MINIMUM AND 0.401 INCHES MAXIMUM IN
  • Cross-Sectional Shape Style: RECTANGULAR
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-171-3679, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is General Motors Corp. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-171-3679
Primary Part Number855012
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerGeneral Motors Corp
StatusCANCELLED
Thickness0.0495 INCHES MINIMUM AND 0.0525 INCHES MAXIMUM IN
MaterialCOPPER OVERALL
Peripheral Shape StyleROUND
Hole Diameter0.251 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Overall Diameter0.381 INCHES MINIMUM AND 0.401 INCHES MAXIMUM IN
Cross-Sectional Shape StyleRECTANGULAR
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
4730-00-497-4457AS5206W08 INTERCHANGEABLE
Nut,tube Coupling
Sae International Dba Sae International
5950-00-648-577519033 INTERCHANGEABLE
Transformer,audio Frequency
Simmonds Precision Products Inc
5305-00-984-4980MS35206-223 INTERCHANGEABLE
Screw,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
4330-01-313-78255575208 INTERCHANGEABLE
Filter,fluid
Tawas Industries Inc
Cross-Reference Index
Part NumberManufacturer
19033 Dana Automotive Systems Group, Llc Dba Dana Sealing Products (USA)
855012 General Motors Llc Dba General Motors Llc (USA)
855012 General Motors Llc Dba General Motors (USA)
153454 Essex Industries, Inc. Dba Essex Industries (USA)
855012 Marine Engine Specialties Div of Mesco Tectonics Inc (USA)
855012 PRIMARY General Motors Corp (USA)
Related Parts
4730-00-497-4457INTERCHANGEABLE
NUT,TUBE COUPLING
AS5206W08
5950-00-648-5775INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
19033
5305-00-984-4980INTERCHANGEABLE
SCREW,MACHINE
MS35206-223
4330-01-313-7825INTERCHANGEABLE
FILTER,FLUID
5575208

Frequently Asked Questions

What is NSN 5310-00-171-3679?

NSN 5310-00-171-3679 is a Washer,flat, manufactured by General Motors Corp, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-171-3679?

NSN 5310-00-171-3679 has 6 cross-referenced part numbers: 19033 (Dana Automotive Systems Group, Llc Dba Dana Sealing Products), 855012 (General Motors Llc Dba General Motors Llc), 855012 (General Motors Llc Dba General Motors), 153454 (Essex Industries, Inc. Dba Essex Industries), 855012 (Marine Engine Specialties Div of Mesco Tectonics Inc) and 1 more.

What NSN replaces 5310-00-171-3679?

There are 4 known substitutes for 5310-00-171-3679: 4730-00-497-4457, 5950-00-648-5775, 5305-00-984-4980 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 855012?

Key specifications for 855012: Thickness: 0.0495 INCHES MINIMUM AND 0.0525 INCHES MAXIMUM IN; Material: COPPER OVERALL; Peripheral Shape Style: ROUND; Hole Diameter: 0.251 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-171-3679 still in active supply?

NSN 5310-00-171-3679 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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