PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1066-1Washer,flat

Tru-Hitch, Inc. · NSN 5310-01-523-4836 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-523-4836 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-523-4836. Primary manufacturer part number: 1066-1.
Features
  • Washer,flat — FSC 5310
  • Hole Diameter: 0.560 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Thickness: 0.120 INCHES NOMINAL IN
  • Center Hole Shape Style: ROUND
  • Peripheral Shape Style: ROUND
  • Overall Diameter: 1.060 INCHES NOMINAL IN
  • 1 verified cross-reference
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-523-4836, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Tru-Hitch, Inc.. Government technical data includes 6 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-523-4836
Primary Part Number1066-1
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerTru-Hitch, Inc.
StatusACTIVE
Hole Diameter0.560 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Thickness0.120 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Peripheral Shape StyleROUND
Overall Diameter1.060 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
4320-00-146-47331562P INTERCHANGEABLE
Seat
Curtiss-Wright Electro-Mechanical Corporation Div Epd
2990-00-493-273610661N INTERCHANGEABLE
Muffler,exhaust
Cummins Filtration Inc.
5935-00-518-8161 INTERCHANGEABLE
Adapter,connector
5995-01-359-59361066-1 INTERCHANGEABLE
Cable Assembly,power,electrical
General Dynamics Ots (aerospace), Inc. Dba General Dynamics Ordinance and Tactical Systems Div Seattle Operations
Cross-Reference Index
Part NumberManufacturer
1066-1 PRIMARY Tru-Hitch, Inc. (USA)
Related Parts
4320-00-146-4733INTERCHANGEABLE
SEAT
1562P
2990-00-493-2736INTERCHANGEABLE
MUFFLER,EXHAUST
10661N
5935-00-518-8161INTERCHANGEABLE
ADAPTER,CONNECTOR
5995-01-359-5936INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL
1066-1

Frequently Asked Questions

What is NSN 5310-01-523-4836?

NSN 5310-01-523-4836 is a Washer,flat, manufactured by Tru-Hitch, Inc., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-523-4836?

NSN 5310-01-523-4836 has 1 cross-referenced part number: 1066-1 (Tru-Hitch, Inc.).

What NSN replaces 5310-01-523-4836?

There are 4 known substitutes for 5310-01-523-4836: 4320-00-146-4733, 2990-00-493-2736, 5935-00-518-8161 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1066-1?

Key specifications for 1066-1: Hole Diameter: 0.560 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Thickness: 0.120 INCHES NOMINAL IN; Center Hole Shape Style: ROUND. 7 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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