PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

81586Washer,flat

Hydro-Aire Aerospace Corp · NSN 5310-00-058-1500 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-058-1500 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-058-1500. Primary manufacturer part number: 81586.
Features
  • Washer,flat — FSC 5310
  • Peripheral Shape Style: ROUND
  • Material: STEEL COMP 302 OVERALL
  • Material Document and Classification: MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Cross-Sectional Shape Style: RECTANGULAR
  • Overall Diameter: 0.775 INCHES MINIMUM AND 0.785 INCHES MAXIMUM IN
  • Surface Treatment: PASSIVATE OVERALL
  • Center Hole Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 302 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-058-1500, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hydro-Aire Aerospace Corp. Government technical data includes 9 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
NSN5310-00-058-1500
Primary Part Number81586
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHydro-Aire Aerospace Corp
StatusACTIVE
Peripheral Shape StyleROUND
MaterialSTEEL COMP 302 OVERALL
Material Document and ClassificationMIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Cross-Sectional Shape StyleRECTANGULAR
Overall Diameter0.775 INCHES MINIMUM AND 0.785 INCHES MAXIMUM IN
Surface TreatmentPASSIVATE OVERALL
Center Hole Shape StyleROUND
Thickness0.027 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
Hole Diameter0.500 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4820-01-171-504781586 INTERCHANGEABLE
Valve,flow Control
Paccar Winch Inc Dba Paccar Winch Division
5310-01-426-534581586 INTERCHANGEABLE
Nut,self-Locking,hexagon
Stewart & Stevenson Power Products Llc
Cross-Reference Index
Part NumberManufacturer
81586 PRIMARY Hydro-Aire Aerospace Corp (USA)
Related Parts
4820-01-171-5047INTERCHANGEABLE
VALVE,FLOW CONTROL
81586
5310-01-426-5345INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
81586

Frequently Asked Questions

What is NSN 5310-00-058-1500?

NSN 5310-00-058-1500 is a Washer,flat, manufactured by Hydro-Aire Aerospace Corp, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-058-1500?

NSN 5310-00-058-1500 has 1 cross-referenced part number: 81586 (Hydro-Aire Aerospace Corp).

What NSN replaces 5310-00-058-1500?

There are 2 known substitutes for 5310-00-058-1500: 4820-01-171-5047, 5310-01-426-5345. Verify interchangeability with system specifications before substitution.

What are the specifications of 81586?

Key specifications for 81586: Peripheral Shape Style: ROUND; Material: STEEL COMP 302 OVERALL; Material Document and Classification: MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 9 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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