PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12Z3010-256Washer,lock

Naval Ordnance Standards · NSN 5310-00-595-7154 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-595-7154 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-595-7154. Primary manufacturer part number: 12Z3010-256.
Features
  • Washer,lock — FSC 5310
  • Hole Diameter: 0.384 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN
  • Material Thickness: 0.020 INCHES NOMINAL IN
  • Style Designator: FLAT INTERNAL TEETH
  • Outside Diameter: 0.500 INCHES NOMINAL IN
  • Material: STEEL CORROSION RESISTING OVERALL
  • 8 verified cross-references
  • Primary manufacturer: Naval Ordnance Standards
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-595-7154, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Naval Ordnance Standards. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 5 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
NSN5310-00-595-7154
Primary Part Number12Z3010-256
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNaval Ordnance Standards
StatusACTIVE
Hole Diameter0.384 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN
Material Thickness0.020 INCHES NOMINAL IN
Style DesignatorFLAT INTERNAL TEETH
Outside Diameter0.500 INCHES NOMINAL IN
MaterialSTEEL CORROSION RESISTING OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5310-00-883-5931 INTERCHANGEABLE
Washer,lock
5845-01-176-9924745428 INTERCHANGEABLE
Train Mechanism,sonar
Raytheon Company Dba Raytheon Co
5360-01-370-9053172002 INTERCHANGEABLE
Spring,flat
Parker Hannifin Corporation Div Aerospace Group Headquarters
3040-01-646-811117200-2 INTERCHANGEABLE
Shaft,straight
United States Department of the Navy Dba Naval Surface Warfare Center Panama City
Cross-Reference Index
Part NumberManufacturer
12Z3010-256 Naval Ordnance Standards (USA)
767058 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
10785DC-301 Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc (USA)
848809PC1 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
745428 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
8825376 Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament (USA)
440936PC3 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
1720-02 Itw Shakeproof Automotive Products (USA)
Related Parts
5310-00-883-5931INTERCHANGEABLE
WASHER,LOCK
5845-01-176-9924INTERCHANGEABLE
TRAIN MECHANISM,SONAR
745428
5360-01-370-9053INTERCHANGEABLE
SPRING,FLAT
172002
3040-01-646-8111INTERCHANGEABLE
SHAFT,STRAIGHT
17200-2

Frequently Asked Questions

What is NSN 5310-00-595-7154?

NSN 5310-00-595-7154 is a Washer,lock, manufactured by Naval Ordnance Standards, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-595-7154?

NSN 5310-00-595-7154 has 8 cross-referenced part numbers: 12Z3010-256 (Naval Ordnance Standards), 767058 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 10785DC-301 (Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc), 848809PC1 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 745428 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier) and 3 more.

What NSN replaces 5310-00-595-7154?

There are 4 known substitutes for 5310-00-595-7154: 5310-00-883-5931, 5845-01-176-9924, 5360-01-370-9053 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12Z3010-256?

Key specifications for 12Z3010-256: Hole Diameter: 0.384 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN; Material Thickness: 0.020 INCHES NOMINAL IN; Style Designator: FLAT INTERNAL TEETH; Outside Diameter: 0.500 INCHES NOMINAL IN. 5 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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