PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SMC500956-2Washer,lock

Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir · NSN 5310-00-327-4813 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-327-4813 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-327-4813. Primary manufacturer part number: SMC500956-2.
Features
  • Washer,lock — FSC 5310
  • Outside Diameter: 0.493 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
  • Surface Treatment: PAINT OVERALL
  • Material Thickness: 0.022 INCHES NOMINAL IN
  • Hole Diameter: 0.377 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN
  • Material: STEEL OVERALL
  • Surface Treatment Document and Classification: TT-P-1757 FED SPEC SINGLE TREATMENT RESPONSE OR TT-P-636 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Style Designator: FLAT INTERNAL TEETH
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-327-4813, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, 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
NSN5310-00-327-4813
Primary Part NumberSMC500956-2
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerUs Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
StatusACTIVE
Outside Diameter0.493 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
Surface TreatmentPAINT OVERALL
Material Thickness0.022 INCHES NOMINAL IN
Hole Diameter0.377 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Surface Treatment Document and ClassificationTT-P-1757 FED SPEC SINGLE TREATMENT RESPONSE OR TT-P-636 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Style DesignatorFLAT INTERNAL TEETH
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5310-00-012-2002122002 INTERCHANGEABLE
Nut,plain,hexagon
Rolls-Royce Solutions America Inc
5310-00-155-4983905212-02 INTERCHANGEABLE
Washer,lock
Northrop Grumman Systems Corporation
5310-01-228-9901 INTERCHANGEABLE
Washer,lock
5910-01-245-9540122-002 INTERCHANGEABLE
Capacitor,fixed,electrolytic
Panametrics Llc
Cross-Reference Index
Part NumberManufacturer
1220-02 Itw Shakeproof Automotive Products (USA)
SMC500956-2 PRIMARY Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
Related Parts
5310-00-012-2002INTERCHANGEABLE
NUT,PLAIN,HEXAGON
122002
5310-00-155-4983INTERCHANGEABLE
WASHER,LOCK
905212-02
5310-01-228-9901INTERCHANGEABLE
WASHER,LOCK
5910-01-245-9540INTERCHANGEABLE
CAPACITOR,FIXED,ELECTROLYTIC
122-002

Frequently Asked Questions

What is NSN 5310-00-327-4813?

NSN 5310-00-327-4813 is a Washer,lock, manufactured by Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-327-4813?

NSN 5310-00-327-4813 has 2 cross-referenced part numbers: 1220-02 (Itw Shakeproof Automotive Products), SMC500956-2 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir).

What NSN replaces 5310-00-327-4813?

There are 4 known substitutes for 5310-00-327-4813: 5310-00-012-2002, 5310-00-155-4983, 5310-01-228-9901 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SMC500956-2?

Key specifications for SMC500956-2: Outside Diameter: 0.493 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN; Surface Treatment: PAINT OVERALL; Material Thickness: 0.022 INCHES NOMINAL IN; Hole Diameter: 0.377 INCHES MINIMUM AND 0.391 INCHES MAXIMUM IN. 7 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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