PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3889Socket,crowfoot Wrench Head

Wta Tool Llc · NSN 5120-00-248-6662 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-248-6662 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-248-6662. Primary manufacturer part number: 3889.
Features
  • Socket,crowfoot Wrench Head — FSC 5120
  • Drive End Outside Diameter: 0.678 INCHES NOMINAL IN
  • Specification/standard Data: 05047-ASME B107.100 CAT 21 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Style Designator: EXTERNAL-INTERNAL
  • Material: STEEL OVERALL
  • Wrenching Surface Shape: HEXAGON SINGLE END INTERNAL
  • Surface Treatment: CHROMIUM AND NICKEL AND OXIDE OVERALL
  • Wrenching End Outside Diameter: 0.750 INCHES NOMINAL IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,crowfoot Wrench Head, cataloged under National Stock Number 5120-00-248-6662, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Wta Tool Llc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 6 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
NSN5120-00-248-6662
Primary Part Number3889
Item NameSocket,crowfoot Wrench Head
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerWta Tool Llc
StatusCANCELLED
Drive End Outside Diameter0.678 INCHES NOMINAL IN
Specification/standard Data05047-ASME B107.100 CAT 21 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Style DesignatorEXTERNAL-INTERNAL
MaterialSTEEL OVERALL
Wrenching Surface ShapeHEXAGON SINGLE END INTERNAL
Surface TreatmentCHROMIUM AND NICKEL AND OXIDE OVERALL
Wrenching End Outside Diameter0.750 INCHES NOMINAL IN
Opening Diameter0.245 INCHES MINIMUM IN
Wrenching Surface Size0.375 INCHES NOMINAL SINGLE END IN
Nondefinitive Spec/std Data2 TYPE AND 1 CLASS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
1680-00-124-96743889-1 INTERCHANGEABLE
Housing,spring,reel
Nell-Joy Industries, Inc.
5815-00-228-6710SC-C-69992-17 INTERCHANGEABLE
Bar,connecting,teletypewriter
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5950-00-435-81382638528 INTERCHANGEABLE
Transformer,power
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
2805-00-516-2688R100 INTERCHANGEABLE
Lock,valve Spring Retainer
Eaton Corp Dba Eaton Aerospace Jackson
5920-00-685-9894SFB1060-01 INTERCHANGEABLE
Fuseholder,block
Cooper Bussmann, Llc Dba Cooper Industries
5325-00-805-42557716676P17 INTERCHANGEABLE
Grommet,nonmetallic
Lockheed Martin Corporation Div Rms
5950-01-020-65681219-145 INTERCHANGEABLE
Transformer,power
Bae Systems Information and Electronic Systems Integration Inc.
4820-01-024-1355994-38 INTERCHANGEABLE
Parts Kit,pressure Regulating VA
Walchem Corp
5940-01-080-9543 INTERCHANGEABLE
Terminal,stud
6610-01-225-04133889 INTERCHANGEABLE
Mechanism Assembly
Kearflex Engineering Company
Cross-Reference Index
Part NumberManufacturer
3889 Wta Tool Llc (USA)
GGG-W-646 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
B107.21 The American Society of Mechanical Engineers (USA)
B107.21 TY2CL1 General Services Administration Federal Supply Service (USA)
B107.100 The American Society of Mechanical Engineers (USA)
GGG-W-646 TY2CL1STBFMATM150 General Services Administration Federal Supply Service (USA)
GIT-3889 Granco Industries Inc (USA)
B107.100 CAT 21 TY2CL1 General Services Administration Federal Supply Service (USA)
500 3-8 Stanley-Proto Industrial Works Div of the Stanley Works (USA)
3889 Granco Industries Inc (USA)
Related Parts
1680-00-124-9674INTERCHANGEABLE
HOUSING,SPRING,REEL
3889-1
5815-00-228-6710INTERCHANGEABLE
BAR,CONNECTING,TELETYPEWRITER
SC-C-69992-17
5950-00-435-8138INTERCHANGEABLE
TRANSFORMER,POWER
2638528
2805-00-516-2688INTERCHANGEABLE
LOCK,VALVE SPRING RETAINER
R100
5920-00-685-9894INTERCHANGEABLE
FUSEHOLDER,BLOCK
SFB1060-01
5325-00-805-4255INTERCHANGEABLE
GROMMET,NONMETALLIC
7716676P17
5950-01-020-6568INTERCHANGEABLE
TRANSFORMER,POWER
1219-145
4820-01-024-1355INTERCHANGEABLE
PARTS KIT,PRESSURE REGULATING VA
994-38
5940-01-080-9543INTERCHANGEABLE
TERMINAL,STUD
6610-01-225-0413INTERCHANGEABLE
MECHANISM ASSEMBLY
3889
5306-01-239-2555INTERCHANGEABLE
BOLT,MACHINE
3-8-8-9
5310-01-260-3149INTERCHANGEABLE
NUT
50038

Frequently Asked Questions

What is NSN 5120-00-248-6662?

NSN 5120-00-248-6662 is a Socket,crowfoot Wrench Head, manufactured by Wta Tool Llc, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-248-6662?

NSN 5120-00-248-6662 has 10 cross-referenced part numbers: 3889 (Wta Tool Llc), GGG-W-646 (Federal Specifications Promulgated by General Services Administration Washington DC), B107.21 (The American Society of Mechanical Engineers), B107.21 TY2CL1 (General Services Administration Federal Supply Service), B107.100 (The American Society of Mechanical Engineers) and 5 more.

What NSN replaces 5120-00-248-6662?

There are 12 known substitutes for 5120-00-248-6662: 1680-00-124-9674, 5815-00-228-6710, 5950-00-435-8138 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3889?

Key specifications for 3889: Drive End Outside Diameter: 0.678 INCHES NOMINAL IN; Specification/standard Data: 05047-ASME B107.100 CAT 21 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD; Style Designator: EXTERNAL-INTERNAL; Material: STEEL OVERALL. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-248-6662 still in active supply?

NSN 5120-00-248-6662 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.
PartsTable Design LLC · partstable.com