PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A10-921Extension,socket Wrench

Henchman Group Pty Ltd the Trustee for Henchman Unit Trust · NSN 5120-01-397-2966 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-397-2966 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-397-2966. Primary manufacturer part number: A10-921.
Features
  • Extension,socket Wrench — FSC 5120
  • Surface Treatment: CHROMIUM OVERALL
  • Drive End Shape: SQUARE FIRST END INTERNAL
  • Features Provided: MANUAL TOOL
  • Drive End Shape: SQUARE SECOND END EXTERNAL
  • Style Designator: RIGID
  • Material: STEEL OVERALL
  • Drive Surface Size: 0.250 INCHES NOMINAL BOTH ENDS IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Extension,socket Wrench, cataloged under National Stock Number 5120-01-397-2966, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Henchman Group Pty Ltd the Trustee for Henchman Unit Trust. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-397-2966
Primary Part NumberA10-921
Item NameExtension,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerHenchman Group Pty Ltd the Trustee for Henchman Unit Trust
StatusACTIVE
Surface TreatmentCHROMIUM OVERALL
Drive End ShapeSQUARE FIRST END INTERNAL
Features ProvidedMANUAL TOOL
Drive End ShapeSQUARE SECOND END EXTERNAL
Style DesignatorRIGID
MaterialSTEEL OVERALL
Drive Surface Size0.250 INCHES NOMINAL BOTH ENDS IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2925-00-031-617010921 INTERCHANGEABLE
Screen,compound
Unison Industries Llc
5905-00-198-94281092-1 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
Bae Systems Information and Electronic Systems Integration Inc.
5330-00-353-25362208S19 INTERCHANGEABLE
Gasket
Meritor Heavy Vehicle Systems, Llc
1560-00-536-748510921 INTERCHANGEABLE
Block,aileron Hinge
Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company
5950-00-968-443510049551 INTERCHANGEABLE
Transformer,pulse
Us Army Aviation and Missile Command
5955-00-978-2972A10921 INTERCHANGEABLE
Oscillating Group
Autodyne Manufacturing Co Inc
6530-01-153-635910921 INTERCHANGEABLE
Envelope,sterilization
Pymah Corp
6150-01-268-41091092-1 INTERCHANGEABLE
Cable Assembly,special Purpose,e
The Boeing Company
5930-01-346-6671 INTERCHANGEABLE
Switch,thermostatic
6250-01-419-1938 INTERCHANGEABLE
Lampholder
Cross-Reference Index
Part NumberManufacturer
A10-921 Henchman Group Pty Ltd the Trustee for Henchman Unit Trust (AUS)
10-921 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
10-921 Armstrong Bros Tool Co (USA)
10-921 Apex Tool Group, Llc Dba Nicholson (USA)
A10-921 Henchman Products Pty Ltd (AUS)
Related Parts
2925-00-031-6170INTERCHANGEABLE
SCREEN,COMPOUND
10921
5905-00-198-9428INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
1092-1
5330-00-353-2536INTERCHANGEABLE
GASKET
2208S19
1560-00-536-7485INTERCHANGEABLE
BLOCK,AILERON HINGE
10921
5950-00-968-4435INTERCHANGEABLE
TRANSFORMER,PULSE
10049551
5955-00-978-2972INTERCHANGEABLE
OSCILLATING GROUP
A10921
6530-01-153-6359INTERCHANGEABLE
ENVELOPE,STERILIZATION
10921
6150-01-268-4109INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
1092-1
5930-01-346-6671INTERCHANGEABLE
SWITCH,THERMOSTATIC
6250-01-419-1938INTERCHANGEABLE
LAMPHOLDER
3110-01-464-1734INTERCHANGEABLE
BEARING,BALL,ANNULAR
9036
5935-01-494-3538INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
1092-1

Frequently Asked Questions

What is NSN 5120-01-397-2966?

NSN 5120-01-397-2966 is a Extension,socket Wrench, manufactured by Henchman Group Pty Ltd the Trustee for Henchman Unit Trust, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-397-2966?

NSN 5120-01-397-2966 has 5 cross-referenced part numbers: A10-921 (Henchman Group Pty Ltd the Trustee for Henchman Unit Trust), 10-921 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.), 10-921 (Armstrong Bros Tool Co), 10-921 (Apex Tool Group, Llc Dba Nicholson), A10-921 (Henchman Products Pty Ltd).

What NSN replaces 5120-01-397-2966?

There are 12 known substitutes for 5120-01-397-2966: 2925-00-031-6170, 5905-00-198-9428, 5330-00-353-2536 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A10-921?

Key specifications for A10-921: Surface Treatment: CHROMIUM OVERALL; Drive End Shape: SQUARE FIRST END INTERNAL; Features Provided: MANUAL TOOL; Overall Length: 2.000 INCHES NOMINAL IN. 8 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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