PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

GGG-W-641Socket,socket Wrench

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5120-00-166-7985 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-166-7985 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-166-7985. Primary manufacturer part number: GGG-W-641.
Features
  • Socket,socket Wrench — FSC 5120
  • Wrenching End Opening Depth: 0.940 INCHES NOMINAL IN
  • Features Provided: MANUAL TOOL
  • Wrenching Surface Shape: 6 POINT SINGLE END INTERNAL
  • Wrenching Surface Size: 1.312 INCHES NOMINAL SINGLE END IN
  • Wrenching End Outside Diameter: 1.880 INCHES NOMINAL IN
  • Style Designator: INTERNAL-INTERNAL
  • Drive End Outside Diameter: 1.880 INCHES NOMINAL IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-00-166-7985, 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 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 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
NSN5120-00-166-7985
Primary Part NumberGGG-W-641
Item NameSocket,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Wrenching End Opening Depth0.940 INCHES NOMINAL IN
Features ProvidedMANUAL TOOL
Wrenching Surface Shape6 POINT SINGLE END INTERNAL
Wrenching Surface Size1.312 INCHES NOMINAL SINGLE END IN
Wrenching End Outside Diameter1.880 INCHES NOMINAL IN
Style DesignatorINTERNAL-INTERNAL
Drive End Outside Diameter1.880 INCHES NOMINAL IN
Drive End ShapeSQUARE SINGLE END INTERNAL
Surface TreatmentCHROMIUM OVERALL
MaterialSTEEL OVERALL
Drive Surface Size0.750 INCHES NOMINAL SINGLE END IN
Nondefinitive Spec/std Data2 TYPE AND 1 CLASS AND B STYLE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5120-00-087-0696 INTERCHANGEABLE
Socket,socket Wrench
5120-00-189-7919 INTERCHANGEABLE
Socket,socket Wrench
5120-00-189-7923STM14 INTERCHANGEABLE
Socket,socket Wrench
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-00-467-5128 INTERCHANGEABLE
Socket,socket Wrench
5120-00-864-9587 INTERCHANGEABLE
Socket,socket Wrench
5120-00-891-6700 INTERCHANGEABLE
Socket,socket Wrench
5120-00-936-010272D201008-2005 INTERCHANGEABLE
Socket,socket Wrench
The Boeing Company Div Defense
5120-00-948-5962 INTERCHANGEABLE
Socket,socket Wrench
5120-01-073-3778 INTERCHANGEABLE
Socket,socket Wrench
5120-01-081-8057 INTERCHANGEABLE
Socket,socket Wrench
Cross-Reference Index
Part NumberManufacturer
GGG-W-641 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
GGG-W-641 TY2CL1STB General Services Administration Federal Supply Service (USA)
Related Parts
5120-00-087-0696INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-189-7919INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-189-7923INTERCHANGEABLE
SOCKET,SOCKET WRENCH
STM14
5120-00-467-5128INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-864-9587INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-891-6700INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-936-0102INTERCHANGEABLE
SOCKET,SOCKET WRENCH
72D201008-2005
5120-00-948-5962INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-01-073-3778INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-01-081-8057INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-01-161-1899INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-01-183-8020INTERCHANGEABLE
SOCKET,SOCKET WRENCH

Frequently Asked Questions

What is NSN 5120-00-166-7985?

NSN 5120-00-166-7985 is a Socket,socket Wrench, 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 5120-00-166-7985?

NSN 5120-00-166-7985 has 2 cross-referenced part numbers: GGG-W-641 (Federal Specifications Promulgated by General Services Administration Washington DC), GGG-W-641 TY2CL1STB (General Services Administration Federal Supply Service).

What NSN replaces 5120-00-166-7985?

There are 12 known substitutes for 5120-00-166-7985: 5120-00-087-0696, 5120-00-189-7919, 5120-00-189-7923 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of GGG-W-641?

Key specifications for GGG-W-641: Wrenching End Opening Depth: 0.940 INCHES NOMINAL IN; Features Provided: MANUAL TOOL; Overall Length: 3.500 INCHES NOMINAL IN; Wrenching Surface Shape: 6 POINT SINGLE 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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