PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

33166Washer,flat

Fastenal Company · NSN 5310-01-703-3197 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-703-3197 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-703-3197. Primary manufacturer part number: 33166.
Features
  • Washer,flat — FSC 5310
  • Material: STEEL CORROSION RESISTING OVERALL
  • Center Hole Shape Style: ROUND
  • Thickness: 0.098 INCHES NOMINAL IN
  • Overall Diameter: 0.750 INCHES NOMINAL IN
  • Hole Diameter: 0.312 INCHES NOMINAL IN
  • Outside Diameter: 0.750 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
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 5310-01-703-3197, 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. 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-703-3197
Primary Part Number33166
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerFastenal Company
StatusACTIVE
MaterialSTEEL CORROSION RESISTING OVERALL
Center Hole Shape StyleROUND
Thickness0.098 INCHES NOMINAL IN
Overall Diameter0.750 INCHES NOMINAL IN
Hole Diameter0.312 INCHES NOMINAL IN
Outside Diameter0.750 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Peripheral Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3455-00-023-4281 INTERCHANGEABLE
File,rotary
2910-00-057-142114776 INTERCHANGEABLE
Filter Element,fluid
Westerbeke Corporation
5945-00-169-3815 INTERCHANGEABLE
Relay,electromagnetic
5330-00-678-771233-166 INTERCHANGEABLE
Gasket
Thermo King Corporation Dba Phoenix Global Distirbution.
5962-01-072-408433130 INTERCHANGEABLE
Microcircuit,linear
Spectrum Microwave, Inc.
Cross-Reference Index
Part NumberManufacturer
33166 PRIMARY Fastenal Company (USA)
Related Parts
3455-00-023-4281INTERCHANGEABLE
FILE,ROTARY
2910-00-057-1421INTERCHANGEABLE
FILTER ELEMENT,FLUID
14776
5945-00-169-3815INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5330-00-678-7712INTERCHANGEABLE
GASKET
33-166
5962-01-072-4084INTERCHANGEABLE
MICROCIRCUIT,LINEAR
33130

Frequently Asked Questions

What is NSN 5310-01-703-3197?

NSN 5310-01-703-3197 is a Washer,flat, manufactured by Fastenal Company, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-703-3197?

NSN 5310-01-703-3197 has 1 cross-referenced part number: 33166 (Fastenal Company).

What NSN replaces 5310-01-703-3197?

There are 5 known substitutes for 5310-01-703-3197: 3455-00-023-4281, 2910-00-057-1421, 5945-00-169-3815 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 33166?

Key specifications for 33166: Material: STEEL CORROSION RESISTING OVERALL; Center Hole Shape Style: ROUND; End Item Identification: 5310-01-686-0248; Thickness: 0.098 INCHES NOMINAL IN. 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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