PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12556Washer,flat

Triumph Engine Control Systems Llc · NSN 5310-00-484-6655 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-484-6655 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-484-6655. Primary manufacturer part number: 12556.
Features
  • Washer,flat — FSC 5310
  • Overall Diameter: 0.310 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Surface Treatment: OXIDE FILM OVERALL
  • Hole Diameter: 0.160 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN
  • Material: STEEL CORROSION RESISTING OVERALL
  • Thickness: 0.031 INCHES NOMINAL IN
  • Center Hole Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-484-6655, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Triumph Engine Control Systems Llc. 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-484-6655
Primary Part Number12556
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerTriumph Engine Control Systems Llc
StatusACTIVE
Overall Diameter0.310 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Surface TreatmentOXIDE FILM OVERALL
Hole Diameter0.160 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN
MaterialSTEEL CORROSION RESISTING OVERALL
Thickness0.031 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Peripheral Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
2520-00-096-8460 INTERCHANGEABLE
Disk,clutch,vehicular
2940-00-875-91550997018 INTERCHANGEABLE
Filter Element,intake Air Cleane
Perkins Engines Inc
5305-01-715-652312556 INTERCHANGEABLE
Screw,cap,socket Head
O F Mossberg & Sons Inc
Cross-Reference Index
Part NumberManufacturer
12556 PRIMARY Triumph Engine Control Systems Llc (USA)
Related Parts
2520-00-096-8460INTERCHANGEABLE
DISK,CLUTCH,VEHICULAR
2940-00-875-9155INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
0997018
5305-01-715-6523INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
12556

Frequently Asked Questions

What is NSN 5310-00-484-6655?

NSN 5310-00-484-6655 is a Washer,flat, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-484-6655?

NSN 5310-00-484-6655 has 1 cross-referenced part number: 12556 (Triumph Engine Control Systems Llc).

What NSN replaces 5310-00-484-6655?

There are 3 known substitutes for 5310-00-484-6655: 2520-00-096-8460, 2940-00-875-9155, 5305-01-715-6523. Verify interchangeability with system specifications before substitution.

What are the specifications of 12556?

Key specifications for 12556: Overall Diameter: 0.310 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: OXIDE FILM OVERALL; Hole Diameter: 0.160 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN. 8 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com