PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3259Washer,split

Hdt Expeditionary Systems Inc · NSN 5310-00-813-0500 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-813-0500 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-813-0500. Primary manufacturer part number: 3259.
Features
  • Washer,split — FSC 5310
  • Style Designator: SPLIT
  • Hardness Rating: 43.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
  • Outside Diameter: 0.615 INCHES MINIMUM AND 0.647 INCHES MAXIMUM IN
  • Material: STEEL OVERALL
  • Material Thickness: 0.052 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN
  • Material Document and Classification: QQ-W-428,TYPE I FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Distance Across Split Opening: 0.120 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,split, cataloged under National Stock Number 5310-00-813-0500, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hdt Expeditionary Systems Inc. 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-813-0500
Primary Part Number3259
Item NameWasher,split
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHdt Expeditionary Systems Inc
StatusACTIVE
Style DesignatorSPLIT
Hardness Rating43.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Outside Diameter0.615 INCHES MINIMUM AND 0.647 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Material Thickness0.052 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN
Material Document and ClassificationQQ-W-428,TYPE I FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Distance Across Split Opening0.120 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
Hole Diameter0.561 INCHES MINIMUM AND 0.591 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5905-00-258-8691 INTERCHANGEABLE
Resistor,fixed,film
5935-00-899-536432-59 INTERCHANGEABLE
Connector,plug,electrical
Te Connectivity Corporation Dba Microdot Products
4730-00-939-623420016H INTERCHANGEABLE
Clamp,hose
Norma Pennsylvania Inc. Div Breeze Industrial Products
Cross-Reference Index
Part NumberManufacturer
3259 PRIMARY Hdt Expeditionary Systems Inc (USA)
Related Parts
5905-00-258-8691INTERCHANGEABLE
RESISTOR,FIXED,FILM
5935-00-899-5364INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
32-59
4730-00-939-6234INTERCHANGEABLE
CLAMP,HOSE
20016H

Frequently Asked Questions

What is NSN 5310-00-813-0500?

NSN 5310-00-813-0500 is a Washer,split, manufactured by Hdt Expeditionary Systems Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-813-0500?

NSN 5310-00-813-0500 has 1 cross-referenced part number: 3259 (Hdt Expeditionary Systems Inc).

What NSN replaces 5310-00-813-0500?

There are 3 known substitutes for 5310-00-813-0500: 5905-00-258-8691, 5935-00-899-5364, 4730-00-939-6234. Verify interchangeability with system specifications before substitution.

What are the specifications of 3259?

Key specifications for 3259: Style Designator: SPLIT; Hardness Rating: 43.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM; Special Features: SPLIT CUT AT A 70 DEGREE ANGLE; Outside Diameter: 0.615 INCHES MINIMUM AND 0.647 INCHES MAXIMUM IN. 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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