PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12759-80056Washer,flat

Fastenal Company Dba Fastenal Co · NSN 5310-01-576-5909 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-576-5909 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-576-5909. Primary manufacturer part number: 12759-80056.
Features
  • Washer,flat — FSC 5310
  • Criticality Code Justification: AGAV
  • Peripheral Shape Style: ROUND
  • Cross-Sectional Shape Style: RECTANGULAR
  • Center Hole Shape Style: ROUND
  • Overall Diameter: 1.156 INCHES NOMINAL IN
  • Hole Diameter: 0.594 INCHES NOMINAL IN
  • Thickness: 0.121 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-576-5909, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Fastenal Company Dba Fastenal Co. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-576-5909
Primary Part Number12759-80056
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerFastenal Company Dba Fastenal Co
StatusACTIVE
Criticality Code JustificationAGAV
Peripheral Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Center Hole Shape StyleROUND
Overall Diameter1.156 INCHES NOMINAL IN
Hole Diameter0.594 INCHES NOMINAL IN
Thickness0.121 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5310-01-091-845633087 INTERCHANGEABLE
Nut,plain,hexagon
Kidde-Fenwal, Llc
2910-01-133-4970010-0410-00-0 INTERCHANGEABLE
Filter Element,fluid
Hale Products, Inc.
5365-01-306-463833087 INTERCHANGEABLE
Spacer,sleeve
Funk Mfg Co Sub of Deere and Co
5320-01-554-060133087 INTERCHANGEABLE
Rivet,solid
Powerbrace Corporation Dba Powerbrace America
Cross-Reference Index
Part NumberManufacturer
12759-80056 PRIMARY Fastenal Company Dba Fastenal Co (USA)
33087 Fastenal Company Dba Fastenal Co (USA)
Related Parts
5310-01-091-8456INTERCHANGEABLE
NUT,PLAIN,HEXAGON
33087
2910-01-133-4970INTERCHANGEABLE
FILTER ELEMENT,FLUID
010-0410-00-0
5365-01-306-4638INTERCHANGEABLE
SPACER,SLEEVE
33087
5320-01-554-0601INTERCHANGEABLE
RIVET,SOLID
33087

Frequently Asked Questions

What is NSN 5310-01-576-5909?

NSN 5310-01-576-5909 is a Washer,flat, manufactured by Fastenal Company Dba Fastenal Co, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-576-5909?

NSN 5310-01-576-5909 has 2 cross-referenced part numbers: 12759-80056 (Fastenal Company Dba Fastenal Co), 33087 (Fastenal Company Dba Fastenal Co).

What NSN replaces 5310-01-576-5909?

There are 4 known substitutes for 5310-01-576-5909: 5310-01-091-8456, 2910-01-133-4970, 5365-01-306-4638 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12759-80056?

Key specifications for 12759-80056: Criticality Code Justification: AGAV; Special Features: PLAIN BLACK FINISH; Peripheral Shape Style: ROUND; End Item Identification: NAVISTAR. 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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