PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

158255PC56Washer,lock

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5310-00-262-3491 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-262-3491 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-262-3491. Primary manufacturer part number: 158255PC56.
Features
  • Washer,lock — FSC 5310
  • Outside Diameter: 1.312 INCHES NOMINAL IN
  • Material: STEEL COMP 304 OVERALL
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Hole Diameter: 0.763 INCHES MINIMUM AND 0.783 INCHES MAXIMUM IN
  • Material Thickness: 0.187 INCHES NOMINAL IN
  • Material Document and Classification: QQ-S-763,TY C FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • 4 verified cross-references
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 304 Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-262-3491, 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 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-262-3491
Primary Part Number158255PC56
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Outside Diameter1.312 INCHES NOMINAL IN
MaterialSTEEL COMP 304 OVERALL
Style DesignatorSPLIT HELICAL-RIGHT HAND
Hole Diameter0.763 INCHES MINIMUM AND 0.783 INCHES MAXIMUM IN
Material Thickness0.187 INCHES NOMINAL IN
Material Document and ClassificationQQ-S-763,TY C FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5310-00-262-3558158255PC46 INTERCHANGEABLE
Washer,lock
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5310-00-262-3559 INTERCHANGEABLE
Washer,lock
5310-00-262-356212Z3019-9 INTERCHANGEABLE
Washer,lock
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5310-00-262-3563 INTERCHANGEABLE
Washer,lock
5310-00-262-3564 INTERCHANGEABLE
Washer,lock
5310-00-262-3570 INTERCHANGEABLE
Washer,lock
5310-00-595-7143 INTERCHANGEABLE
Washer,lock
Cross-Reference Index
Part NumberManufacturer
158255PC56 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
345894PC213 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
FFW84CLASSC Federal Specifications Promulgated by General Services Administration Washington DC (USA)
41UT4103-4PC90 United States Coast Guard Dba U.s.c.g. Sflc Div Surface Forces Logistics Center (sflc) (USA)
Related Parts
5310-00-262-3558INTERCHANGEABLE
WASHER,LOCK
158255PC46
5310-00-262-3559INTERCHANGEABLE
WASHER,LOCK
5310-00-262-3562INTERCHANGEABLE
WASHER,LOCK
12Z3019-9
5310-00-262-3563INTERCHANGEABLE
WASHER,LOCK
5310-00-262-3564INTERCHANGEABLE
WASHER,LOCK
5310-00-262-3570INTERCHANGEABLE
WASHER,LOCK
5310-00-595-7143INTERCHANGEABLE
WASHER,LOCK

Frequently Asked Questions

What is NSN 5310-00-262-3491?

NSN 5310-00-262-3491 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 5310-00-262-3491?

NSN 5310-00-262-3491 has 4 cross-referenced part numbers: 158255PC56 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 345894PC213 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), FFW84CLASSC (Federal Specifications Promulgated by General Services Administration Washington DC), 41UT4103-4PC90 (United States Coast Guard Dba U.s.c.g. Sflc Div Surface Forces Logistics Center (sflc)).

What NSN replaces 5310-00-262-3491?

There are 7 known substitutes for 5310-00-262-3491: 5310-00-262-3558, 5310-00-262-3559, 5310-00-262-3562 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 158255PC56?

Key specifications for 158255PC56: Outside Diameter: 1.312 INCHES NOMINAL IN; Material: STEEL COMP 304 OVERALL; Style Designator: SPLIT HELICAL-RIGHT HAND; Hole Diameter: 0.763 INCHES MINIMUM AND 0.783 INCHES MAXIMUM IN. 6 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com