PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

131963Washer,flat

Lucent Technologies Inc Corporate Headquarters · NSN 5310-00-903-5006 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-903-5006 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-903-5006. Primary manufacturer part number: 131963.
Features
  • Washer,flat — FSC 5310
  • Overall Diameter: 0.406 INCHES NOMINAL IN
  • Center Hole Shape Style: ROUND
  • Hole Diameter: 0.253 INCHES NOMINAL IN
  • Material: STEEL CORROSION RESISTING OVERALL
  • Surface Treatment: PASSIVATE OVERALL
  • Cross-Sectional Shape Style: RECTANGULAR
  • Peripheral Shape Style: ROUND
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 5310-00-903-5006, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Lucent Technologies Inc Corporate Headquarters. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-903-5006
Primary Part Number131963
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerLucent Technologies Inc Corporate Headquarters
StatusACTIVE
Overall Diameter0.406 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Hole Diameter0.253 INCHES NOMINAL IN
MaterialSTEEL CORROSION RESISTING OVERALL
Surface TreatmentPASSIVATE OVERALL
Cross-Sectional Shape StyleRECTANGULAR
Peripheral Shape StyleROUND
Thickness0.050 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5305-00-614-3423 INTERCHANGEABLE
Screw,machine
Cross-Reference Index
Part NumberManufacturer
131963 Lucent Technologies Inc Corporate Headquarters (USA)
131963 Lucent Technologies Inc Dba Federal Marketing Group (USA)
131963 American Telephone and Telegraph Co (USA)
131963 At and T Corp (USA)
Related Parts
5305-00-614-3423INTERCHANGEABLE
SCREW,MACHINE

Frequently Asked Questions

What is NSN 5310-00-903-5006?

NSN 5310-00-903-5006 is a Washer,flat, manufactured by Lucent Technologies Inc Corporate Headquarters, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-903-5006?

NSN 5310-00-903-5006 has 4 cross-referenced part numbers: 131963 (Lucent Technologies Inc Corporate Headquarters), 131963 (Lucent Technologies Inc Dba Federal Marketing Group), 131963 (American Telephone and Telegraph Co), 131963 (At and T Corp).

What NSN replaces 5310-00-903-5006?

There is 1 known substitute for 5310-00-903-5006: 5305-00-614-3423. Verify interchangeability with system specifications before substitution.

What are the specifications of 131963?

Key specifications for 131963: Overall Diameter: 0.406 INCHES NOMINAL IN; Center Hole Shape Style: ROUND; Hole Diameter: 0.253 INCHES NOMINAL IN; Material: STEEL CORROSION RESISTING OVERALL. 8 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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