PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

146370PC4Washer,lock

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5310-00-264-1141 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-264-1141 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-264-1141. Primary manufacturer part number: 146370PC4.
Features
  • Washer,lock — FSC 5310
  • Departure From Cited Designator: AS MODIFIED BY OD
  • Material: STEEL OVERALL
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
  • Material Thickness: 0.062 INCHES NOMINAL IN
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Hole Diameter: 0.255 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
  • Material Document and Classification: FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
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 5310-00-264-1141, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 11 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-264-1141
Primary Part Number146370PC4
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Departure From Cited DesignatorAS MODIFIED BY OD
MaterialSTEEL OVERALL
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Material Thickness0.062 INCHES NOMINAL IN
Style DesignatorSPLIT HELICAL-RIGHT HAND
Hole Diameter0.255 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
Material Document and ClassificationFED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter0.450 INCHES NOMINAL IN
Nondefinitive Spec/std DataA CLASS AND 2 STYLE
Surface TreatmentZINC OVERALL
Surface Treatment Document and ClassificationQQ-Z-325,TY 2,CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5310-00-350-31615225936 INTERCHANGEABLE
Washer,lock
U S Army Tank Automotive Command Amsta-Im-Mm
Cross-Reference Index
Part NumberManufacturer
FFW84CLASSASTYLE2 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
146370PC4 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
5310-00-350-3161INTERCHANGEABLE
WASHER,LOCK
5225936

Frequently Asked Questions

What is NSN 5310-00-264-1141?

NSN 5310-00-264-1141 is a Washer,lock, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-264-1141?

NSN 5310-00-264-1141 has 2 cross-referenced part numbers: FFW84CLASSASTYLE2 (Federal Specifications Promulgated by General Services Administration Washington DC), 146370PC4 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 5310-00-264-1141?

There is 1 known substitute for 5310-00-264-1141: 5310-00-350-3161. Verify interchangeability with system specifications before substitution.

What are the specifications of 146370PC4?

Key specifications for 146370PC4: Departure From Cited Designator: AS MODIFIED BY OD; Material: STEEL OVERALL; Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM; Material Thickness: 0.062 INCHES NOMINAL IN. 11 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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