PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

425048PC12Washer,lock

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5310-00-262-3509 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-262-3509 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-262-3509. Primary manufacturer part number: 425048PC12.
Features
  • Washer,lock — FSC 5310
  • Nondefinitive Spec/std Data: A CLASS AND 2 STYLE
  • Material: STEEL OVERALL
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Outside Diameter: 0.251 INCHES NOMINAL IN
  • Material Thickness: 0.031 INCHES NOMINAL IN
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
  • Hole Diameter: 0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN
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 5310-00-262-3509, 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 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-262-3509
Primary Part Number425048PC12
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Nondefinitive Spec/std DataA CLASS AND 2 STYLE
MaterialSTEEL OVERALL
Style DesignatorSPLIT HELICAL-RIGHT HAND
Outside Diameter0.251 INCHES NOMINAL IN
Material Thickness0.031 INCHES NOMINAL IN
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Hole Diameter0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN
Surface TreatmentZINC OVERALL
Material Document and ClassificationFED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Surface Treatment Document and ClassificationQQ-Z-325,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5310-00-045-4007NASM35338-41 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5136-00-228-099554661 INTERCHANGEABLE
Tap,thread Cutting
Tapco Cutting Tools Inc
5945-00-583-6603 INTERCHANGEABLE
Relay,electromagnetic
5999-00-938-8797293BC700105-001 INTERCHANGEABLE
Shielding Gasket,electronic
Lockheed Martin Corporation Div Rotary and Mission Systems
6850-01-251-1542 INTERCHANGEABLE
Cleaning Compound,solvent
5985-01-444-66181424-6 INTERCHANGEABLE
Dummy Load,electrical
Spectrum Control Inc Div Weinschel
Cross-Reference Index
Part NumberManufacturer
425048PC12 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
6 Mellowes Co Div of Charter Mfg Co Inc (USA)
146370PC15 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
12Z3038-20 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
388604PC4 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
FFW84CLASSASTYLE2 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
424091PC16 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
367416PC4 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
14246 PRIMARY Bosch Security Systems, Llc (USA)
12Z22-247 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
425047PC11 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
5310-00-045-4007INTERCHANGEABLE
WASHER,LOCK
NASM35338-41
5136-00-228-0995INTERCHANGEABLE
TAP,THREAD CUTTING
54661
5945-00-583-6603INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5999-00-938-8797INTERCHANGEABLE
SHIELDING GASKET,ELECTRONIC
293BC700105-001
6850-01-251-1542INTERCHANGEABLE
CLEANING COMPOUND,SOLVENT
5985-01-444-6618INTERCHANGEABLE
DUMMY LOAD,ELECTRICAL
1424-6

Frequently Asked Questions

What is NSN 5310-00-262-3509?

NSN 5310-00-262-3509 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 5310-00-262-3509?

NSN 5310-00-262-3509 has 11 cross-referenced part numbers: 425048PC12 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 6 (Mellowes Co Div of Charter Mfg Co Inc), 146370PC15 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 12Z3038-20 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 388604PC4 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier) and 6 more.

What NSN replaces 5310-00-262-3509?

There are 6 known substitutes for 5310-00-262-3509: 5310-00-045-4007, 5136-00-228-0995, 5945-00-583-6603 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 425048PC12?

Key specifications for 425048PC12: Nondefinitive Spec/std Data: A CLASS AND 2 STYLE; Material: STEEL OVERALL; Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.251 INCHES NOMINAL IN. 10 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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