PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

PL0021Washer,flat

Phaostron Instrument and Electronic Company · NSN 5310-00-171-7474 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-171-7474 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-171-7474. Primary manufacturer part number: PL0021.
Features
  • Washer,flat — FSC 5310
  • Peripheral Shape Style: ROUND
  • Overall Diameter: 0.516 INCHES MINIMUM AND 0.547 INCHES MAXIMUM IN
  • Hardness Rating: 40.0 DUROMETER MINIMUM AND 50.0 DUROMETER MAXIMUM
  • Material: RUBBER SYNTHETIC OVERALL
  • Thickness: 0.031 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Hole Diameter: 0.141 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Rubber Synthetic Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-171-7474, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Phaostron Instrument and Electronic Company. Government technical data includes 8 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-171-7474
Primary Part NumberPL0021
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerPhaostron Instrument and Electronic Company
StatusCANCELLED
Peripheral Shape StyleROUND
Overall Diameter0.516 INCHES MINIMUM AND 0.547 INCHES MAXIMUM IN
Hardness Rating40.0 DUROMETER MINIMUM AND 50.0 DUROMETER MAXIMUM
MaterialRUBBER SYNTHETIC OVERALL
Thickness0.031 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Hole Diameter0.141 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
3030-00-528-4635 INTERCHANGEABLE
Belt,v
Cross-Reference Index
Part NumberManufacturer
PL0021 PRIMARY Phaostron Instrument and Electronic Company (USA)
Related Parts
3030-00-528-4635INTERCHANGEABLE
BELT,V

Frequently Asked Questions

What is NSN 5310-00-171-7474?

NSN 5310-00-171-7474 is a Washer,flat, manufactured by Phaostron Instrument and Electronic Company, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-171-7474?

NSN 5310-00-171-7474 has 1 cross-referenced part number: PL0021 (Phaostron Instrument and Electronic Company).

What NSN replaces 5310-00-171-7474?

There is 1 known substitute for 5310-00-171-7474: 3030-00-528-4635. Verify interchangeability with system specifications before substitution.

What are the specifications of PL0021?

Key specifications for PL0021: Peripheral Shape Style: ROUND; Overall Diameter: 0.516 INCHES MINIMUM AND 0.547 INCHES MAXIMUM IN; Hardness Rating: 40.0 DUROMETER MINIMUM AND 50.0 DUROMETER MAXIMUM; Material: RUBBER SYNTHETIC OVERALL. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-171-7474 still in active supply?

NSN 5310-00-171-7474 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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