PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

33115121Washer,flat

Westerbeke Corporation · NSN 5310-00-059-8733 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-059-8733 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-059-8733. Primary manufacturer part number: 33115121.
Features
  • Washer,flat — FSC 5310
  • Overall Diameter: 0.641 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
  • Features Provided: CASEHARDENED
  • Center Hole Shape Style: ROUND
  • Heat Treatment: QUENCHED AND TEMPERED
  • Peripheral Shape Style: ROUND
  • Cross-Sectional Shape Style: RECTANGULAR
  • Material: STEEL 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 5310-00-059-8733, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Westerbeke Corporation. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-059-8733
Primary Part Number33115121
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerWesterbeke Corporation
StatusACTIVE
Overall Diameter0.641 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
Features ProvidedCASEHARDENED
Center Hole Shape StyleROUND
Heat TreatmentQUENCHED AND TEMPERED
Peripheral Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
MaterialSTEEL OVERALL
Hole Diameter0.410 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN
Thickness0.048 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
6625-00-001-4452 INTERCHANGEABLE
Test Set,audio
5310-00-787-646612622 INTERCHANGEABLE
Washer,concave
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5930-00-943-950212622 INTERCHANGEABLE
Switch,rotary
Shallcross Inc
5310-01-183-55240921063 INTERCHANGEABLE
Washer
Perkins Engines Inc
5340-01-537-7734 INTERCHANGEABLE
Bracket,mounting
6150-01-538-223812622 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Generac Mobile Products, Llc
Cross-Reference Index
Part NumberManufacturer
12622 Westerbeke Corporation (USA)
33115121 PRIMARY Westerbeke Corporation (USA)
31733118 Westerbeke Corporation (USA)
Related Parts
6625-00-001-4452INTERCHANGEABLE
TEST SET,AUDIO
5310-00-787-6466INTERCHANGEABLE
WASHER,CONCAVE
12622
5930-00-943-9502INTERCHANGEABLE
SWITCH,ROTARY
12622
5310-01-183-5524INTERCHANGEABLE
WASHER
0921063
5340-01-537-7734INTERCHANGEABLE
BRACKET,MOUNTING
6150-01-538-2238INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
12622

Frequently Asked Questions

What is NSN 5310-00-059-8733?

NSN 5310-00-059-8733 is a Washer,flat, manufactured by Westerbeke Corporation, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-059-8733?

NSN 5310-00-059-8733 has 3 cross-referenced part numbers: 12622 (Westerbeke Corporation), 33115121 (Westerbeke Corporation), 31733118 (Westerbeke Corporation).

What NSN replaces 5310-00-059-8733?

There are 6 known substitutes for 5310-00-059-8733: 6625-00-001-4452, 5310-00-787-6466, 5930-00-943-9502 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 33115121?

Key specifications for 33115121: Overall Diameter: 0.641 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN; Features Provided: CASEHARDENED; Center Hole Shape Style: ROUND; Heat Treatment: QUENCHED AND TEMPERED. 9 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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