PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

50566Screw,machine

Caterpillar Work Tools, Inc Dba Caterpillar · NSN 5305-01-239-7143 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-239-7143 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-239-7143. Primary manufacturer part number: 50566.
Features
  • Screw,machine — FSC 5305
  • 1 verified cross-reference
  • Primary manufacturer: Caterpillar Work Tools, Inc Dba Caterpillar
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-01-239-7143, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Caterpillar Work Tools, Inc Dba Caterpillar. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameScrew,machine
FSC / FSG5305 — No Item Name Available (FSG 53)
ManufacturersCaterpillar Work Tools, Inc Dba Caterpillar (CAGE 89917)
Technical Specifications
ParameterValue
NSN5305-01-239-7143
Primary Part Number50566
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerCaterpillar Work Tools, Inc Dba Caterpillar
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5210-00-241-36135210-00-241-3613 INTERCHANGEABLE
Level and Plumb
General Services Administration Federal Supply Service
5330-01-023-9650 INTERCHANGEABLE
Gasket
5320-01-067-50285056-6 INTERCHANGEABLE
Collar
L3harris Technologies, Inc. Div Space and Airborne Systems
5365-01-214-38225HP50N INTERCHANGEABLE
Plug,machine Thread
Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division
5940-01-326-668050566-1 INTERCHANGEABLE
Terminal,lug
Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems
6130-01-397-191750566 INTERCHANGEABLE
Power Supply Subassembly
Haynes International, Inc.
9525-01-664-746750566 INTERCHANGEABLE
Wire,nonelectrical
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
Cross-Reference Index
Part NumberManufacturer
50566 Caterpillar Work Tools, Inc Dba Caterpillar (USA)
Related Parts
5210-00-241-3613INTERCHANGEABLE
LEVEL AND PLUMB
5210-00-241-3613
5330-01-023-9650INTERCHANGEABLE
GASKET
5320-01-067-5028INTERCHANGEABLE
COLLAR
5056-6
5365-01-214-3822INTERCHANGEABLE
PLUG,MACHINE THREAD
5HP50N
5940-01-326-6680INTERCHANGEABLE
TERMINAL,LUG
50566-1
6130-01-397-1917INTERCHANGEABLE
POWER SUPPLY SUBASSEMBLY
50566
9525-01-664-7467INTERCHANGEABLE
WIRE,NONELECTRICAL
50566

Frequently Asked Questions

What is NSN 5305-01-239-7143?

NSN 5305-01-239-7143 is a Screw,machine, manufactured by Caterpillar Work Tools, Inc Dba Caterpillar, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-239-7143?

NSN 5305-01-239-7143 has 1 cross-referenced part number: 50566 (Caterpillar Work Tools, Inc Dba Caterpillar).

What NSN replaces 5305-01-239-7143?

There are 7 known substitutes for 5305-01-239-7143: 5210-00-241-3613, 5330-01-023-9650, 5320-01-067-5028 and 4 more. Verify interchangeability with system specifications before substitution.

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