PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

38166Nut,self-Locking,extended Washer

Fastenal Company Dba Fastenal Co · NSN 5310-01-591-3616 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-591-3616 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-591-3616. Primary manufacturer part number: 38166.
Features
  • Nut,self-Locking,extended Washer — FSC 5310
  • 3 verified cross-references
  • Primary manufacturer: Fastenal Company Dba Fastenal Co
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-591-3616, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Fastenal Company Dba Fastenal Co. This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameNut,self-Locking,extended Washer
FSC / FSG5310 — No Item Name Available (FSG 53)
ManufacturersFastenal Company Dba Fastenal Co (CAGE 0Y3H3); General Dynamics Land Systems - Force Protection Inc. Dba Gdls Div Gdls-Fp (CAGE 1EFH8)
Technical Specifications
ParameterValue
NSN5310-01-591-3616
Primary Part Number38166
Item NameNut,self-Locking,extended Washer
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerFastenal Company Dba Fastenal Co
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4730-00-460-20490503-6-8 INTERCHANGEABLE
Adapter,straight,tube to Boss
Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division
5310-01-557-945033861 INTERCHANGEABLE
Washer,flat
Fastenal Company Dba Fastenal Co
5305-01-578-12200115207 INTERCHANGEABLE
Screw,cap,hexagon Head
Fastenal Company Dba Fastenal Co
Cross-Reference Index
Part NumberManufacturer
38166 PRIMARY Fastenal Company Dba Fastenal Co (USA)
S000022 General Dynamics Land Systems - Force Protection Inc. Dba Gdls Div Gdls-Fp (USA)
3011566 General Dynamics Land Systems - Force Protection Inc. Dba Gdls Div Gdls-Fp (USA)
Related Parts
4730-00-460-2049INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO BOSS
0503-6-8
5310-01-557-9450INTERCHANGEABLE
WASHER,FLAT
33861
5305-01-578-1220INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
0115207

Frequently Asked Questions

What is NSN 5310-01-591-3616?

NSN 5310-01-591-3616 is a Nut,self-Locking,extended Washer, manufactured by Fastenal Company Dba Fastenal Co, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-591-3616?

NSN 5310-01-591-3616 has 3 cross-referenced part numbers: 38166 (Fastenal Company Dba Fastenal Co), S000022 (General Dynamics Land Systems - Force Protection Inc. Dba Gdls Div Gdls-Fp), 3011566 (General Dynamics Land Systems - Force Protection Inc. Dba Gdls Div Gdls-Fp).

What NSN replaces 5310-01-591-3616?

There are 3 known substitutes for 5310-01-591-3616: 4730-00-460-2049, 5310-01-557-9450, 5305-01-578-1220. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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