PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

33173Washer,flat

Fastenal Company Dba Fastenal Co · NSN 5310-01-658-4012 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-658-4012 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-658-4012. Primary manufacturer part number: 33173.
Features
  • Washer,flat — FSC 5310
  • Overall Diameter: 1.313 INCHES NOMINAL IN
  • Center Hole Shape Style: ROUND
  • Hole Diameter: 0.688 INCHES NOMINAL IN
  • 3 verified cross-references
  • Primary manufacturer: Fastenal Company Dba Fastenal Co
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-658-4012, 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 Dba Fastenal Co. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-658-4012
Primary Part Number33173
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerFastenal Company Dba Fastenal Co
StatusACTIVE
Overall Diameter1.313 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Hole Diameter0.688 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5940-00-229-754033173 INTERCHANGEABLE
Terminal,lug
Te Connectivity Corporation
5330-00-291-1976C146-13 INTERCHANGEABLE
Gasket
Mack Trucks Inc Parts Opn
5940-00-825-3700BB-884-2 INTERCHANGEABLE
Terminal,lug
Molex-Etc Inc Sub of Molex Inc
5961-00-903-3587 INTERCHANGEABLE
Transistor
5962-01-079-6655AD7541SD/883B INTERCHANGEABLE
Microcircuit,digital-Linear
Analog Devices, Inc. Div Corporate Headquarters
3040-01-269-9576 INTERCHANGEABLE
Disk Brake Shoe
7025-01-537-8897SUPER DVD 16X16 INTERCHANGEABLE
Reproducer,disk Media
Iomega Corporation
Cross-Reference Index
Part NumberManufacturer
33173 PRIMARY Fastenal Company Dba Fastenal Co (USA)
121941 Haulmark Trailers (australia) Pty Ltd (AUS)
ASTM F436-TY1-5/8 PRIMARY American Society for Testing and Materials Dba Astm International (USA)
Related Parts
5940-00-229-7540INTERCHANGEABLE
TERMINAL,LUG
33173
5330-00-291-1976INTERCHANGEABLE
GASKET
C146-13
5940-00-825-3700INTERCHANGEABLE
TERMINAL,LUG
BB-884-2
5961-00-903-3587INTERCHANGEABLE
TRANSISTOR
5962-01-079-6655INTERCHANGEABLE
MICROCIRCUIT,DIGITAL-LINEAR
AD7541SD/883B
3040-01-269-9576INTERCHANGEABLE
DISK BRAKE SHOE
7025-01-537-8897INTERCHANGEABLE
REPRODUCER,DISK MEDIA
SUPER DVD 16X16

Frequently Asked Questions

What is NSN 5310-01-658-4012?

NSN 5310-01-658-4012 is a Washer,flat, manufactured by Fastenal Company Dba Fastenal Co, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-658-4012?

NSN 5310-01-658-4012 has 3 cross-referenced part numbers: 33173 (Fastenal Company Dba Fastenal Co), 121941 (Haulmark Trailers (australia) Pty Ltd), ASTM F436-TY1-5/8 (American Society for Testing and Materials Dba Astm International).

What NSN replaces 5310-01-658-4012?

There are 7 known substitutes for 5310-01-658-4012: 5940-00-229-7540, 5330-00-291-1976, 5940-00-825-3700 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 33173?

Key specifications for 33173: Overall Diameter: 1.313 INCHES NOMINAL IN; Center Hole Shape Style: ROUND; Hole Diameter: 0.688 INCHES NOMINAL IN; Special Features: MECHANICALLY GALVANIZED. 4 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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