PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20-368Washer,flat

Dresser Industries Inc Leroi Div · NSN 5310-00-187-1854 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-187-1854 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-187-1854. Primary manufacturer part number: 20-368.
Features
  • Washer,flat — FSC 5310
  • Hole Diameter: 0.312 INCHES NOMINAL IN
  • Material: COPPER OVERALL
  • Center Hole Shape Style: ROUND
  • Peripheral Shape Style: ROUND
  • Overall Diameter: 0.500 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Thickness: 0.062 INCHES NOMINAL IN
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 5310-00-187-1854, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Dresser Industries Inc Leroi Div. Government technical data includes 7 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-187-1854
Primary Part Number20-368
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerDresser Industries Inc Leroi Div
StatusACTIVE
Hole Diameter0.312 INCHES NOMINAL IN
MaterialCOPPER OVERALL
Center Hole Shape StyleROUND
Peripheral Shape StyleROUND
Overall Diameter0.500 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Thickness0.062 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5310-00-184-8996MS35338-97 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5330-00-251-403720368 INTERCHANGEABLE
Packing,preformed
Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
5330-00-967-367920368 INTERCHANGEABLE
Seal,chevron
Cadillac Gage Textron Inc.
5940-00-983-6045 INTERCHANGEABLE
Terminal Board
4820-01-359-0545 INTERCHANGEABLE
Valve,angle
4820-01-359-0547 INTERCHANGEABLE
Valve,angle
4820-01-361-5011 INTERCHANGEABLE
Valve,safety Relief
Cross-Reference Index
Part NumberManufacturer
20-368 PRIMARY Dresser Industries Inc Leroi Div (USA)
Related Parts
5310-00-184-8996INTERCHANGEABLE
WASHER,LOCK
MS35338-97
5330-00-251-4037INTERCHANGEABLE
PACKING,PREFORMED
20368
5330-00-967-3679INTERCHANGEABLE
SEAL,CHEVRON
20368
5940-00-983-6045INTERCHANGEABLE
TERMINAL BOARD
4820-01-359-0545INTERCHANGEABLE
VALVE,ANGLE
4820-01-359-0547INTERCHANGEABLE
VALVE,ANGLE
4820-01-361-5011INTERCHANGEABLE
VALVE,SAFETY RELIEF

Frequently Asked Questions

What is NSN 5310-00-187-1854?

NSN 5310-00-187-1854 is a Washer,flat, manufactured by Dresser Industries Inc Leroi Div, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-187-1854?

NSN 5310-00-187-1854 has 1 cross-referenced part number: 20-368 (Dresser Industries Inc Leroi Div).

What NSN replaces 5310-00-187-1854?

There are 7 known substitutes for 5310-00-187-1854: 5310-00-184-8996, 5330-00-251-4037, 5330-00-967-3679 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20-368?

Key specifications for 20-368: Hole Diameter: 0.312 INCHES NOMINAL IN; Material: COPPER OVERALL; Center Hole Shape Style: ROUND; Peripheral Shape Style: ROUND. 7 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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