PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

GGG-W-644Wrench,socket

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5120-00-541-3186 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-541-3186 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-541-3186. Primary manufacturer part number: GGG-W-644.
Features
  • Wrench,socket — FSC 5120
  • Wrenching Surface Size: 0.750 INCHES NOMINAL FIRST END IN
  • Nondefinitive Spec/std Data: 1 TYPE AND 3 SIZE
  • Wrenching Surface Shape: HEXAGON SECOND END INTERNAL
  • Wrenching Surface Shape: HEXAGON THIRD END INTERNAL
  • Wrenching Surface Shape: HEXAGON FOURTH END INTERNAL
  • Style Designator: FOUR SOCKET CROSS
  • Wrenching Surface Size: 0.812 INCHES NOMINAL SECOND END IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,socket, cataloged under National Stock Number 5120-00-541-3186, 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 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 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
NSN5120-00-541-3186
Primary Part NumberGGG-W-644
Item NameWrench,socket
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Wrenching Surface Size0.750 INCHES NOMINAL FIRST END IN
Nondefinitive Spec/std Data1 TYPE AND 3 SIZE
Wrenching Surface ShapeHEXAGON SECOND END INTERNAL
Wrenching Surface ShapeHEXAGON THIRD END INTERNAL
Wrenching Surface ShapeHEXAGON FOURTH END INTERNAL
Style DesignatorFOUR SOCKET CROSS
Wrenching Surface Size0.812 INCHES NOMINAL SECOND END IN
MaterialSTEEL OVERALL
Wrenching Surface Size0.938 INCHES NOMINAL FOURTH END IN
Wrenching Surface Size0.875 INCHES NOMINAL THIRD END IN
Wrenching Surface ShapeHEXAGON FIRST END INTERNAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6210-00-107-0026 INTERCHANGEABLE
Fixture,lighting
5120-00-177-6821 INTERCHANGEABLE
Wrench,socket
5120-00-203-4766 INTERCHANGEABLE
Wrench,socket
5975-00-245-1668 INTERCHANGEABLE
Conduit Outlet
5120-00-293-1289 INTERCHANGEABLE
Wrench,socket
5120-00-293-14045120-00-293-1404 INTERCHANGEABLE
Wrench,socket
General Services Administration Federal Supply Service
5120-00-293-2452 INTERCHANGEABLE
Wrench,socket
5120-00-316-9217 INTERCHANGEABLE
Wrench,socket
5120-00-449-8261TKPX1TYPEB INTERCHANGEABLE
Wrench,socket
U S Army Tank Automotive Command Amsta-Im-Mm
5120-00-473-65427104985 INTERCHANGEABLE
Wrench,socket
Army, United States Department of the Dba Rock Island Arsenal Jmtc
Cross-Reference Index
Part NumberManufacturer
GGG-W-644 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
35657 Wright Tool Company, Llc (USA)
T57 Summit Tool Company (USA)
GGG-W-644 TY1SZ3 General Services Administration Federal Supply Service (USA)
Related Parts
6210-00-107-0026INTERCHANGEABLE
FIXTURE,LIGHTING
5120-00-177-6821INTERCHANGEABLE
WRENCH,SOCKET
5120-00-203-4766INTERCHANGEABLE
WRENCH,SOCKET
5975-00-245-1668INTERCHANGEABLE
CONDUIT OUTLET
5120-00-293-1289INTERCHANGEABLE
WRENCH,SOCKET
5120-00-293-1404INTERCHANGEABLE
WRENCH,SOCKET
5120-00-293-1404
5120-00-293-2452INTERCHANGEABLE
WRENCH,SOCKET
5120-00-316-9217INTERCHANGEABLE
WRENCH,SOCKET
5120-00-449-8261INTERCHANGEABLE
WRENCH,SOCKET
TKPX1TYPEB
5120-00-473-6542INTERCHANGEABLE
WRENCH,SOCKET
7104985
5120-00-795-0664INTERCHANGEABLE
WRENCH,SOCKET
5120-00-795-0664
5950-00-849-0315INTERCHANGEABLE
TRANSFORMER,POWER
J4821

Frequently Asked Questions

What is NSN 5120-00-541-3186?

NSN 5120-00-541-3186 is a Wrench,socket, 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 5120-00-541-3186?

NSN 5120-00-541-3186 has 4 cross-referenced part numbers: GGG-W-644 (Federal Specifications Promulgated by General Services Administration Washington DC), 35657 (Wright Tool Company, Llc), T57 (Summit Tool Company), GGG-W-644 TY1SZ3 (General Services Administration Federal Supply Service).

What NSN replaces 5120-00-541-3186?

There are 12 known substitutes for 5120-00-541-3186: 6210-00-107-0026, 5120-00-177-6821, 5120-00-203-4766 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of GGG-W-644?

Key specifications for GGG-W-644: Wrenching Surface Size: 0.750 INCHES NOMINAL FIRST END IN; Nondefinitive Spec/std Data: 1 TYPE AND 3 SIZE; Overall Length: 20.000 INCHES MINIMUM IN; Wrenching Surface Shape: HEXAGON SECOND END INTERNAL. 13 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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