PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

GGG-W-646Socket,crowfoot Wrench Head

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5120-00-585-7690 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-585-7690 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-585-7690. Primary manufacturer part number: GGG-W-646.
Features
  • Socket,crowfoot Wrench Head — FSC 5120
  • Opening Diameter: 2.812 INCHES MINIMUM IN
  • Wrenching End Outside Diameter: 4.038 INCHES NOMINAL IN
  • Style Designator: EXTERNAL-INTERNAL
  • Wrenching Surface Size: 3.437 INCHES NOMINAL SINGLE END IN
  • Nondefinitive Spec/std Data: 147 COMPONENT
  • Surface Treatment: CHROMIUM AND NICKEL AND OXIDE OVERALL
  • Material: STEEL OVERALL
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,crowfoot Wrench Head, cataloged under National Stock Number 5120-00-585-7690, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Federal Specifications Promulgated by General Services Administration Washington DC. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 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
NSN5120-00-585-7690
Primary Part NumberGGG-W-646
Item NameSocket,crowfoot Wrench Head
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Opening Diameter2.812 INCHES MINIMUM IN
Wrenching End Outside Diameter4.038 INCHES NOMINAL IN
Style DesignatorEXTERNAL-INTERNAL
Wrenching Surface Size3.437 INCHES NOMINAL SINGLE END IN
Nondefinitive Spec/std Data147 COMPONENT
Surface TreatmentCHROMIUM AND NICKEL AND OXIDE OVERALL
MaterialSTEEL OVERALL
Wrenching Surface ShapeHEXAGON SINGLE END INTERNAL
Drive End Outside Diameter3.176 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3120-00-146-5630AA304-2 INTERCHANGEABLE
Bearing,sleeve
Miller-Holzwarth Inc.
5120-00-248-6684 INTERCHANGEABLE
Socket,crowfoot Wrench Head
3120-00-287-63132409-965568PC401 INTERCHANGEABLE
Bearing,sleeve
Naval Ship Systems Command
5120-00-585-7689 INTERCHANGEABLE
Socket,crowfoot Wrench Head
5120-00-585-7692 INTERCHANGEABLE
Socket,crowfoot Wrench Head
5120-00-585-7693 INTERCHANGEABLE
Socket,crowfoot Wrench Head
5120-00-585-7695 INTERCHANGEABLE
Socket,crowfoot Wrench Head
5120-00-585-7697 INTERCHANGEABLE
Socket,crowfoot Wrench Head
5120-00-585-7698 INTERCHANGEABLE
Socket,crowfoot Wrench Head
5120-00-585-7699 INTERCHANGEABLE
Socket,crowfoot Wrench Head
Cross-Reference Index
Part NumberManufacturer
GGG-W-646 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
A-A-3042 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
A-A-3042 #147 General Services Administration Federal Supply Service (USA)
GGG-W-646 TY2CL1STAFMBPT147 General Services Administration Federal Supply Service (USA)
Related Parts
3120-00-146-5630INTERCHANGEABLE
BEARING,SLEEVE
AA304-2
5120-00-248-6684INTERCHANGEABLE
SOCKET,CROWFOOT WRENCH HEAD
3120-00-287-6313INTERCHANGEABLE
BEARING,SLEEVE
2409-965568PC401
5120-00-585-7689INTERCHANGEABLE
SOCKET,CROWFOOT WRENCH HEAD
5120-00-585-7692INTERCHANGEABLE
SOCKET,CROWFOOT WRENCH HEAD
5120-00-585-7693INTERCHANGEABLE
SOCKET,CROWFOOT WRENCH HEAD
5120-00-585-7695INTERCHANGEABLE
SOCKET,CROWFOOT WRENCH HEAD
5120-00-585-7697INTERCHANGEABLE
SOCKET,CROWFOOT WRENCH HEAD
5120-00-585-7698INTERCHANGEABLE
SOCKET,CROWFOOT WRENCH HEAD
5120-00-585-7699INTERCHANGEABLE
SOCKET,CROWFOOT WRENCH HEAD
5120-00-585-7700INTERCHANGEABLE
SOCKET,CROWFOOT WRENCH HEAD
5120-00-585-7701INTERCHANGEABLE
SOCKET,CROWFOOT WRENCH HEAD

Frequently Asked Questions

What is NSN 5120-00-585-7690?

NSN 5120-00-585-7690 is a Socket,crowfoot Wrench Head, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-00-585-7690?

NSN 5120-00-585-7690 has 4 cross-referenced part numbers: GGG-W-646 (Federal Specifications Promulgated by General Services Administration Washington DC), A-A-3042 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), A-A-3042 #147 (General Services Administration Federal Supply Service), GGG-W-646 TY2CL1STAFMBPT147 (General Services Administration Federal Supply Service).

What NSN replaces 5120-00-585-7690?

There are 12 known substitutes for 5120-00-585-7690: 3120-00-146-5630, 5120-00-248-6684, 3120-00-287-6313 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of GGG-W-646?

Key specifications for GGG-W-646: Opening Diameter: 2.812 INCHES MINIMUM IN; Wrenching End Outside Diameter: 4.038 INCHES NOMINAL IN; Style Designator: EXTERNAL-INTERNAL; Wrenching Surface Size: 3.437 INCHES NOMINAL SINGLE END IN. 10 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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