PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

49966Extension,socket Wrench

The Stanley Works Dba Stanley Proto · NSN 5120-01-601-5174 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-601-5174 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-601-5174. Primary manufacturer part number: 49966.
Features
  • Extension,socket Wrench — FSC 5120
  • Drive End Shape: SQUARE SECOND END EXTERNAL
  • Material: STEEL OVERALL
  • Features Provided: MANUAL TOOL
  • Style Designator: RIGID
  • Specification/standard Data: 0U583-SAE AS4283 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Drive Surface Size: 0.500 INCHES NOMINAL BOTH ENDS IN
  • Surface Treatment: CHROMIUM OVERALL
Applications
  • Applications requiring Steel Overall construction
General Description

The Extension,socket Wrench, cataloged under National Stock Number 5120-01-601-5174, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is The Stanley Works Dba Stanley Proto. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 8 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
NSN5120-01-601-5174
Primary Part Number49966
Item NameExtension,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe Stanley Works Dba Stanley Proto
StatusACTIVE
Drive End ShapeSQUARE SECOND END EXTERNAL
MaterialSTEEL OVERALL
Features ProvidedMANUAL TOOL
Style DesignatorRIGID
Specification/standard Data0U583-SAE AS4283 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Drive Surface Size0.500 INCHES NOMINAL BOTH ENDS IN
Surface TreatmentCHROMIUM OVERALL
Drive End ShapeSQUARE FIRST END INTERNAL
Nondefinitive Spec/std Data2 TYPE AND 2 CLASS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5905-00-005-2902 INTERCHANGEABLE
Resistor,fixed,film
3610-00-069-4106 INTERCHANGEABLE
Cam Switch,right
6115-00-103-9250 INTERCHANGEABLE
Connection,generato
5905-00-106-9345 INTERCHANGEABLE
Resistor,fixed,composition
5910-00-114-0755 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
5905-00-138-7399 INTERCHANGEABLE
Resistor,fixed,film
5330-00-294-0791455070RAR INTERCHANGEABLE
Seal,plain Encased
Federal-Mogul Corp Government Sales Dept
5905-00-346-8296 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
5360-00-362-381416A02624 INTERCHANGEABLE
Spring,helical,compression
Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.)
5961-00-849-4186 INTERCHANGEABLE
Semiconductor Device,diode
Cross-Reference Index
Part NumberManufacturer
12-936 Apex Tool Group, Llc Dba Nicholson (USA)
81349 Apex Tool Group, Llc Dba Nicholson (USA)
12-936 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
AS4283 Sae International Dba Sae International (USA)
456720012305 Ncb Hungary (honvedsegi Egyseges Termekkod) (HUN)
49966 PRIMARY The Stanley Works Dba Stanley Proto (USA)
AS4283 TY2CL2 General Services Administration Federal Supply Service (USA)
AS4283 Society of Automotive Engineers Inc (USA)
12-936 Armstrong Bros Tool Co (USA)
Related Parts
5905-00-005-2902INTERCHANGEABLE
RESISTOR,FIXED,FILM
3610-00-069-4106INTERCHANGEABLE
CAM SWITCH,RIGHT
6115-00-103-9250INTERCHANGEABLE
CONNECTION,GENERATO
5905-00-106-9345INTERCHANGEABLE
RESISTOR,FIXED,COMPOSITION
5910-00-114-0755INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
5905-00-138-7399INTERCHANGEABLE
RESISTOR,FIXED,FILM
5330-00-294-0791INTERCHANGEABLE
SEAL,PLAIN ENCASED
455070RAR
5905-00-346-8296INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
5360-00-362-3814INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
16A02624
5961-00-849-4186INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5310-01-273-9873INTERCHANGEABLE
WASHER,SADDLE
6145-01-274-3348INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
12936

Frequently Asked Questions

What is NSN 5120-01-601-5174?

NSN 5120-01-601-5174 is a Extension,socket Wrench, manufactured by The Stanley Works Dba Stanley Proto, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-601-5174?

NSN 5120-01-601-5174 has 9 cross-referenced part numbers: 12-936 (Apex Tool Group, Llc Dba Nicholson), 81349 (Apex Tool Group, Llc Dba Nicholson), 12-936 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.), AS4283 (Sae International Dba Sae International), 456720012305 (Ncb Hungary (honvedsegi Egyseges Termekkod)) and 4 more.

What NSN replaces 5120-01-601-5174?

There are 12 known substitutes for 5120-01-601-5174: 5905-00-005-2902, 3610-00-069-4106, 6115-00-103-9250 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 49966?

Key specifications for 49966: Overall Length: 4.700 INCHES MINIMUM AND 5.150 INCHES MAXIMUM IN; Drive End Shape: SQUARE SECOND END EXTERNAL; Material: STEEL OVERALL; Features Provided: MANUAL TOOL. 11 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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