PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

22-951Adapter,socket Wrench

Apex Tool Group, Llc Dba Nicholson · NSN 5120-01-656-4739 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-656-4739 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-656-4739. Primary manufacturer part number: 22-951.
Features
  • Adapter,socket Wrench — FSC 5120
  • Drive End Shape: SQUARE SECOND END EXTERNAL
  • Style Designator: EXTERNAL-INTERNAL
  • Drive Surface Size: 0.750 INCHES NOMINAL SECOND END IN
  • Drive Surface Size: 1.0 INCHES NOMINAL FIRST END IN
  • Drive End Shape: SQUARE FIRST END INTERNAL
  • 1 verified cross-reference
  • Primary manufacturer: Apex Tool Group, Llc Dba Nicholson
Applications
  • Field maintenance and repair
  • Facility maintenance operations
  • General-purpose hand tools
General Description

The Adapter,socket Wrench, cataloged under National Stock Number 5120-01-656-4739, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Apex Tool Group, Llc Dba Nicholson. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-656-4739
Primary Part Number22-951
Item NameAdapter,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerApex Tool Group, Llc Dba Nicholson
StatusACTIVE
Drive End ShapeSQUARE SECOND END EXTERNAL
Style DesignatorEXTERNAL-INTERNAL
Drive Surface Size0.750 INCHES NOMINAL SECOND END IN
Drive Surface Size1.0 INCHES NOMINAL FIRST END IN
Drive End ShapeSQUARE FIRST END INTERNAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5945-00-172-8343022-22951 INTERCHANGEABLE
Solenoid Assembly
Moog Inc
2805-00-428-477622951 INTERCHANGEABLE
Shield,cylinder
Briggs and Stratton Corp
2920-00-433-0813105-151 INTERCHANGEABLE
Regulator,engine Generator
Prestolite Electric Inc
5365-01-084-1112 INTERCHANGEABLE
Spacer,plate
5330-01-178-6210 INTERCHANGEABLE
Seal Kit
5855-01-630-3541 INTERCHANGEABLE
Viewer,night Vision
Cross-Reference Index
Part NumberManufacturer
22-951 Apex Tool Group, Llc Dba Nicholson (USA)
Related Parts
5945-00-172-8343INTERCHANGEABLE
SOLENOID ASSEMBLY
022-22951
2805-00-428-4776INTERCHANGEABLE
SHIELD,CYLINDER
22951
2920-00-433-0813INTERCHANGEABLE
REGULATOR,ENGINE GENERATOR
105-151
5365-01-084-1112INTERCHANGEABLE
SPACER,PLATE
5330-01-178-6210INTERCHANGEABLE
SEAL KIT
5855-01-630-3541INTERCHANGEABLE
VIEWER,NIGHT VISION

Frequently Asked Questions

What is NSN 5120-01-656-4739?

NSN 5120-01-656-4739 is a Adapter,socket Wrench, manufactured by Apex Tool Group, Llc Dba Nicholson, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-656-4739?

NSN 5120-01-656-4739 has 1 cross-referenced part number: 22-951 (Apex Tool Group, Llc Dba Nicholson).

What NSN replaces 5120-01-656-4739?

There are 6 known substitutes for 5120-01-656-4739: 5945-00-172-8343, 2805-00-428-4776, 2920-00-433-0813 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 22-951?

Key specifications for 22-951: Overall Length: 3.0 INCHES NOMINAL IN; Drive End Shape: SQUARE SECOND END EXTERNAL; Style Designator: EXTERNAL-INTERNAL; Drive Surface Size: 0.750 INCHES NOMINAL SECOND END IN. 7 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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