PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

43908Socket,socket Wrench

S K Hand Tool Corp · NSN 5120-00-189-8609 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-189-8609 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-189-8609. Primary manufacturer part number: 43908.
Features
  • Socket,socket Wrench — FSC 5120
  • Drive Surface Size: 0.250 INCHES NOMINAL SINGLE END IN
  • Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL
  • Features Provided: MANUAL TOOL
  • Drive End Shape: SQUARE SINGLE END INTERNAL
  • Nondefinitive Spec/std Data: 1 TYPE AND 1 CLASS AND A STYLE
  • Special Markings: 1/4 IN. IN
  • Material: STEEL OVERALL
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-00-189-8609, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is S K Hand Tool Corp. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 14 commercial cross-references from 12 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-00-189-8609
Primary Part Number43908
Item NameSocket,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerS K Hand Tool Corp
StatusCANCELLED
Drive Surface Size0.250 INCHES NOMINAL SINGLE END IN
Wrenching Surface Shape12 POINT SINGLE END INTERNAL
Features ProvidedMANUAL TOOL
Drive End ShapeSQUARE SINGLE END INTERNAL
Nondefinitive Spec/std Data1 TYPE AND 1 CLASS AND A STYLE
Special Markings1/4 IN. IN
MaterialSTEEL OVERALL
Specification/standard Data81343-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Style DesignatorINTERNAL-INTERNAL
Wrenching Surface Size0.250 INCHES NOMINAL SINGLE END IN
Environmental Attribute CodePLASTICS REMOVAL IN THE MARINE ENVIRONMENT (PRIME) PRODUCT
Surface TreatmentCHROMIUM OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5120-00-018-1553 INTERCHANGEABLE
Socket,socket Wrench
5955-00-066-659043908 INTERCHANGEABLE
Oscillator,noncrystal Controlled
L3harris Technologies, Inc. Div Space and Airborne Systems
5120-00-082-8526 INTERCHANGEABLE
Socket,socket Wrench
3010-00-135-5409AA1407 INTERCHANGEABLE
Clutch Assembly,friction
Simmonds Precision Products Inc
5120-00-189-8610 INTERCHANGEABLE
Socket,socket Wrench
6140-00-190-9828 INTERCHANGEABLE
Battery,storage
5120-00-227-6702 INTERCHANGEABLE
Socket,socket Wrench
5120-00-227-6703 INTERCHANGEABLE
Socket,socket Wrench
5120-00-235-5828 INTERCHANGEABLE
Socket,socket Wrench
5120-00-235-5869 INTERCHANGEABLE
Socket,socket Wrench
Cross-Reference Index
Part NumberManufacturer
43908 S K Hand Tool Corp (USA)
A-A-1407 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
819158 Dresser Industries Inc Dresser Magcobar Div (USA)
B107.1 TY1CL1 General Services Administration Federal Supply Service (USA)
8T Thorsen Tool Co Sub of Wallace-Murray Corp (USA)
10086310 Nimikkeistokeskus Ncb Finland (FIN)
B107.1 CL1STA General Services Administration Federal Supply Service (USA)
AS954 Society of Automotive Engineers Inc (USA)
XWS2149 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
AS954 Sae International Dba Sae International (USA)
GGG-W-641 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
233008S King Tony Tools Co., Ltd
AS954 TY1CL1STA General Services Administration Federal Supply Service (USA)
B107.1 The American Society of Mechanical Engineers (USA)
Related Parts
5120-00-018-1553INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5955-00-066-6590INTERCHANGEABLE
OSCILLATOR,NONCRYSTAL CONTROLLED
43908
5120-00-082-8526INTERCHANGEABLE
SOCKET,SOCKET WRENCH
3010-00-135-5409INTERCHANGEABLE
CLUTCH ASSEMBLY,FRICTION
AA1407
5120-00-189-8610INTERCHANGEABLE
SOCKET,SOCKET WRENCH
6140-00-190-9828INTERCHANGEABLE
BATTERY,STORAGE
5120-00-227-6702INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-227-6703INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-235-5828INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-235-5869INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-235-5878INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5940-00-241-6237INTERCHANGEABLE
SPLICE,CONDUCTOR

Frequently Asked Questions

What is NSN 5120-00-189-8609?

NSN 5120-00-189-8609 is a Socket,socket Wrench, manufactured by S K Hand Tool Corp, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-189-8609?

NSN 5120-00-189-8609 has 14 cross-referenced part numbers: 43908 (S K Hand Tool Corp), A-A-1407 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), 819158 (Dresser Industries Inc Dresser Magcobar Div), B107.1 TY1CL1 (General Services Administration Federal Supply Service), 8T (Thorsen Tool Co Sub of Wallace-Murray Corp) and 9 more.

What NSN replaces 5120-00-189-8609?

There are 12 known substitutes for 5120-00-189-8609: 5120-00-018-1553, 5955-00-066-6590, 5120-00-082-8526 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 43908?

Key specifications for 43908: Drive Surface Size: 0.250 INCHES NOMINAL SINGLE END IN; Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL; Features Provided: MANUAL TOOL; Drive End Shape: SQUARE SINGLE END INTERNAL. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-189-8609 still in active supply?

NSN 5120-00-189-8609 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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