PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

W-158Washer,flat

Metric and Multistandard Components Corp · NSN 5310-01-381-9662 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-381-9662 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-381-9662. Primary manufacturer part number: W-158.
Features
  • Washer,flat — FSC 5310
  • Thickness: 0.187 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Surface Treatment: ZINC OVERALL
  • Overall Diameter: 2.500 INCHES NOMINAL IN
  • Center Hole Shape Style: ROUND
  • Hole Diameter: 0.641 INCHES NOMINAL IN
  • Peripheral Shape Style: ROUND
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 5310-01-381-9662, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Metric and Multistandard Components Corp. 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-381-9662
Primary Part NumberW-158
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMetric and Multistandard Components Corp
StatusACTIVE
Thickness0.187 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Surface TreatmentZINC OVERALL
Overall Diameter2.500 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Hole Diameter0.641 INCHES NOMINAL IN
Peripheral Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5120-00-409-5231W158 INTERCHANGEABLE
Locating Tool,harne
Daniels Manufacturing Corporation
5999-00-465-91340794-5504 INTERCHANGEABLE
Heater,thermal Release
Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc
5961-00-581-77961906-0021 INTERCHANGEABLE
Rectifier,semiconductor Device,u
Avago Technologies Us Inc Div Avago Technologies
5995-01-202-0207W158 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Lockheed Martin Corporation Dba Lockheed Martin
Cross-Reference Index
Part NumberManufacturer
W-158 Metric and Multistandard Components Corp (USA)
Related Parts
5120-00-409-5231INTERCHANGEABLE
LOCATING TOOL,HARNE
W158
5999-00-465-9134INTERCHANGEABLE
HEATER,THERMAL RELEASE
0794-5504
5961-00-581-7796INTERCHANGEABLE
RECTIFIER,SEMICONDUCTOR DEVICE,U
1906-0021
5995-01-202-0207INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
W158

Frequently Asked Questions

What is NSN 5310-01-381-9662?

NSN 5310-01-381-9662 is a Washer,flat, manufactured by Metric and Multistandard Components Corp, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-381-9662?

NSN 5310-01-381-9662 has 1 cross-referenced part number: W-158 (Metric and Multistandard Components Corp).

What NSN replaces 5310-01-381-9662?

There are 4 known substitutes for 5310-01-381-9662: 5120-00-409-5231, 5999-00-465-9134, 5961-00-581-7796 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of W-158?

Key specifications for W-158: Thickness: 0.187 INCHES NOMINAL IN; Material: STEEL OVERALL; Surface Treatment: ZINC OVERALL; Overall Diameter: 2.500 INCHES NOMINAL IN. 8 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com