PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

W4305Washer,flat

Waterous Company · NSN 5310-00-196-5090 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-196-5090 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-196-5090. Primary manufacturer part number: W4305.
Features
  • Washer,flat — FSC 5310
  • Thickness: 0.064 INCHES NOMINAL IN
  • Material: COPPER ALLOY OVERALL
  • Overall Diameter: 0.750 INCHES NOMINAL IN
  • Center Hole Shape Style: ROUND
  • Peripheral Shape Style: ROUND
  • Hole Diameter: 0.337 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-196-5090, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Waterous Company. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-196-5090
Primary Part NumberW4305
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerWaterous Company
StatusCANCELLED
Thickness0.064 INCHES NOMINAL IN
MaterialCOPPER ALLOY OVERALL
Overall Diameter0.750 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Peripheral Shape StyleROUND
Hole Diameter0.337 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5136-00-580-7360T105A INTERCHANGEABLE
Tap,thread Cutting
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5305-00-735-9217121551 INTERCHANGEABLE
Screw,special
Telemechanics Inc
Cross-Reference Index
Part NumberManufacturer
W4305 PRIMARY Waterous Company (USA)
D160034L000 Jered Llc (USA)
121-551 Cmc Electronics Inc (CAN)
F20065K001 ITEM 16 Jered Llc (USA)
Related Parts
5136-00-580-7360INTERCHANGEABLE
TAP,THREAD CUTTING
T105A
5305-00-735-9217INTERCHANGEABLE
SCREW,SPECIAL
121551

Frequently Asked Questions

What is NSN 5310-00-196-5090?

NSN 5310-00-196-5090 is a Washer,flat, manufactured by Waterous Company, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-196-5090?

NSN 5310-00-196-5090 has 4 cross-referenced part numbers: W4305 (Waterous Company), D160034L000 (Jered Llc), 121-551 (Cmc Electronics Inc), F20065K001 ITEM 16 (Jered Llc).

What NSN replaces 5310-00-196-5090?

There are 2 known substitutes for 5310-00-196-5090: 5136-00-580-7360, 5305-00-735-9217. Verify interchangeability with system specifications before substitution.

What are the specifications of W4305?

Key specifications for W4305: Thickness: 0.064 INCHES NOMINAL IN; Material: COPPER ALLOY OVERALL; Overall Diameter: 0.750 INCHES NOMINAL IN; Center Hole Shape Style: ROUND. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-196-5090 still in active supply?

NSN 5310-00-196-5090 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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