PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

31WLF51618Nut,plain,extended Washer,hexago

Mac Lean Fogg Lock Nut Co · NSN 5310-00-166-8341 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-166-8341 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-166-8341. Primary manufacturer part number: 31WLF51618.
Features
  • Nut,plain,extended Washer,hexago — FSC 5310
  • 12 verified cross-references
  • Primary manufacturer: Mac Lean Fogg Lock Nut Co
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Nut,plain,extended Washer,hexago, cataloged under National Stock Number 5310-00-166-8341, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Mac Lean Fogg Lock Nut Co. This item has 12 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameNut,plain,extended Washer,hexago
FSC / FSG5310 — No Item Name Available (FSG 53)
ManufacturersOshkosh Defense Llc (CAGE 75Q65); Crane Carrier Company, Llc (CAGE 03533); Mac Lean Fogg Lock Nut Co (CAGE 82465); Avionic Instruments Llc Dba Avionics Instruments Inc (CAGE 10933); Ingersoll-Rand Company Dba Ingersoll-Rand Div Road Development (CAGE 1S654)
Technical Specifications
ParameterValue
NSN5310-00-166-8341
Primary Part Number31WLF51618
Item NameNut,plain,extended Washer,hexago
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMac Lean Fogg Lock Nut Co
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5331-01-288-1077RN70M114500300B0100 INTERCHANGEABLE
O-Ring
Gallagher Fluid Seals Incorporated Div Gallagher Fluid Seals, Inc.
5310-01-350-1874131-937 INTERCHANGEABLE
Nut,self-Locking,hexagon
Cnh Industrial America Llc Dba Cnh America
1330-01-616-908413046953 INTERCHANGEABLE
Grenade,hand
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
1330-01-617-065213046957 INTERCHANGEABLE
Grenade,hand
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
1320-01-617-268213038376 INTERCHANGEABLE
Projectile,155 Millimeter
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
1330-01-617-270213046955 INTERCHANGEABLE
Grenade,hand
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
1330-01-617-272013046956 INTERCHANGEABLE
Grenade,hand
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
1330-01-617-317013046954 INTERCHANGEABLE
Grenade,hand
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
Cross-Reference Index
Part NumberManufacturer
5HS663 Oshkosh Defense Llc (USA)
A219-389 Crane Carrier Company, Llc (USA)
31WLF51618 PRIMARY Mac Lean Fogg Lock Nut Co (USA)
131-937 Avionic Instruments Llc Dba Avionics Instruments Inc (USA)
219-0389 Crane Carrier Company, Llc (USA)
59918573 Ingersoll-Rand Company Dba Ingersoll-Rand Div Road Development (USA)
5HS663 Oshkosh Corp (USA)
31 WLF 51618 Maclean-Fogg Co (USA)
59918573 Champion Road Machinery Inc Pro-Pav Div (USA)
352S2600 Clark Equipment Co Div Doosan Infracore Portable Power (USA)
219-389 Crane Carrier Company, Llc (USA)
32WLF51618 Mac Lean Fogg Lock Nut Co (USA)
Related Parts
5331-01-288-1077INTERCHANGEABLE
O-RING
RN70M114500300B0100
5310-01-350-1874INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
131-937
1330-01-616-9084INTERCHANGEABLE
GRENADE,HAND
13046953
1330-01-617-0652INTERCHANGEABLE
GRENADE,HAND
13046957
1320-01-617-2682INTERCHANGEABLE
PROJECTILE,155 MILLIMETER
13038376
1330-01-617-2702INTERCHANGEABLE
GRENADE,HAND
13046955
1330-01-617-2720INTERCHANGEABLE
GRENADE,HAND
13046956
1330-01-617-3170INTERCHANGEABLE
GRENADE,HAND
13046954

Frequently Asked Questions

What is NSN 5310-00-166-8341?

NSN 5310-00-166-8341 is a Nut,plain,extended Washer,hexago, manufactured by Mac Lean Fogg Lock Nut Co, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-166-8341?

NSN 5310-00-166-8341 has 12 cross-referenced part numbers: 5HS663 (Oshkosh Defense Llc), A219-389 (Crane Carrier Company, Llc), 31WLF51618 (Mac Lean Fogg Lock Nut Co), 131-937 (Avionic Instruments Llc Dba Avionics Instruments Inc), 219-0389 (Crane Carrier Company, Llc) and 7 more.

What NSN replaces 5310-00-166-8341?

There are 8 known substitutes for 5310-00-166-8341: 5331-01-288-1077, 5310-01-350-1874, 1330-01-616-9084 and 5 more. Verify interchangeability with system specifications before substitution.

Is NSN 5310-00-166-8341 still in active supply?

NSN 5310-00-166-8341 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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