PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11143Washer,flat

Aerol Llc · NSN 5310-00-121-3499 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-121-3499 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-121-3499. Primary manufacturer part number: 11143.
Features
  • Washer,flat — FSC 5310
  • Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
  • Hole Diameter: 1.560 INCHES NOMINAL IN
  • Thickness: 0.060 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Overall Diameter: 2.410 INCHES NOMINAL IN
  • Peripheral Shape Style: ROUND
  • Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
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 5310-00-121-3499, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Aerol Llc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-121-3499
Primary Part Number11143
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerAerol Llc
StatusACTIVE
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Hole Diameter1.560 INCHES NOMINAL IN
Thickness0.060 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Overall Diameter2.410 INCHES NOMINAL IN
Peripheral Shape StyleROUND
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Heat TreatmentCOLD ROLLED
Surface TreatmentCADMIUM OVERALL
MaterialSTEEL OVERALL
Center Hole Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3010-00-294-7517 INTERCHANGEABLE
Coupling Half,shaft
5310-00-541-226511143 INTERCHANGEABLE
Washer,flat
Jetronic Industries, Inc. Dba Jetronic Industries, Inc. Div Contracts
5935-00-992-2456114-257-0001 INTERCHANGEABLE
Connector,receptacle,electrical
Northrop Grumman Systems Corporation
5950-00-993-743111143 INTERCHANGEABLE
Reactor
Electro Engineering Works Inc
5330-01-119-582511143 INTERCHANGEABLE
Gasket
Westerbeke Corporation
3230-01-234-746174031 INTERCHANGEABLE
Blade,circular Saw,woodcutting
Dml Industrial Products Sub of Vermont American Corp Forest City Tool Div
3020-01-328-5695 INTERCHANGEABLE
Sprocket Wheel
4240-01-378-452511143 INTERCHANGEABLE
Curtain,safety,industrial
Goff's Enterprises, Inc. Dba Goffs Enterprises Inc
5306-01-411-0119021363 INTERCHANGEABLE
Bolt,machine
Parker-Hannifin Corp Div Hydraulic Pump/motor Division
5995-01-442-181111143 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Astrocom Electronics Inc
Cross-Reference Index
Part NumberManufacturer
11143 PRIMARY Aerol Llc (USA)
G30015B Haulmark Trailers (australia) Pty Ltd (AUS)
Related Parts
3010-00-294-7517INTERCHANGEABLE
COUPLING HALF,SHAFT
5310-00-541-2265INTERCHANGEABLE
WASHER,FLAT
11143
5935-00-992-2456INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
114-257-0001
5950-00-993-7431INTERCHANGEABLE
REACTOR
11143
5330-01-119-5825INTERCHANGEABLE
GASKET
11143
3230-01-234-7461INTERCHANGEABLE
BLADE,CIRCULAR SAW,WOODCUTTING
74031
3020-01-328-5695INTERCHANGEABLE
SPROCKET WHEEL
4240-01-378-4525INTERCHANGEABLE
CURTAIN,SAFETY,INDUSTRIAL
11143
5306-01-411-0119INTERCHANGEABLE
BOLT,MACHINE
021363
5995-01-442-1811INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
11143
6540-01-493-7653INTERCHANGEABLE
BULB,HALOGEN
11143
6240-01-509-0278INTERCHANGEABLE
LAMP,INCANDESCENT
11143

Frequently Asked Questions

What is NSN 5310-00-121-3499?

NSN 5310-00-121-3499 is a Washer,flat, manufactured by Aerol Llc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-121-3499?

NSN 5310-00-121-3499 has 2 cross-referenced part numbers: 11143 (Aerol Llc), G30015B (Haulmark Trailers (australia) Pty Ltd).

What NSN replaces 5310-00-121-3499?

There are 12 known substitutes for 5310-00-121-3499: 3010-00-294-7517, 5310-00-541-2265, 5935-00-992-2456 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11143?

Key specifications for 11143: Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL; Hole Diameter: 1.560 INCHES NOMINAL IN; Thickness: 0.060 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR. 11 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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