PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12Z3018-3Washer,lock

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5310-00-209-1331 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-209-1331 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-209-1331. Primary manufacturer part number: 12Z3018-3.
Features
  • Washer,lock — FSC 5310
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Material Document and Classification: QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Hole Diameter: 0.194 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN
  • Material Thickness: 0.031 INCHES NOMINAL IN
  • Outside Diameter: 0.253 INCHES NOMINAL IN
  • Material: STEEL COMP 302 OVERALL
  • 3 verified cross-references
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 302 Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-209-1331, 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 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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
NSN5310-00-209-1331
Primary Part Number12Z3018-3
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Style DesignatorSPLIT HELICAL-RIGHT HAND
Material Document and ClassificationQQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Hole Diameter0.194 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN
Material Thickness0.031 INCHES NOMINAL IN
Outside Diameter0.253 INCHES NOMINAL IN
MaterialSTEEL COMP 302 OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5310-00-929-6395MS35338-136 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
12Z3018-3 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
43W6558-200 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
12Z3018-3 Naval Ordnance Standards (USA)
Related Parts
5310-00-929-6395INTERCHANGEABLE
WASHER,LOCK
MS35338-136

Frequently Asked Questions

What is NSN 5310-00-209-1331?

NSN 5310-00-209-1331 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 5310-00-209-1331?

NSN 5310-00-209-1331 has 3 cross-referenced part numbers: 12Z3018-3 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 43W6558-200 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 12Z3018-3 (Naval Ordnance Standards).

What NSN replaces 5310-00-209-1331?

There is 1 known substitute for 5310-00-209-1331: 5310-00-929-6395. Verify interchangeability with system specifications before substitution.

What are the specifications of 12Z3018-3?

Key specifications for 12Z3018-3: Style Designator: SPLIT HELICAL-RIGHT HAND; Material Document and Classification: QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Hole Diameter: 0.194 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN; Material Thickness: 0.031 INCHES NOMINAL IN. 6 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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