PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B107.1Socket,socket Wrench

The American Society of Mechanical Engineers · NSN 5120-01-073-3778 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-073-3778 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-073-3778. Primary manufacturer part number: B107.1.
Features
  • Socket,socket Wrench — FSC 5120
  • Wrenching End Opening Depth: 0.438 INCHES NOMINAL IN
  • Drive Surface Size: 0.375 INCHES NOMINAL SINGLE END IN
  • Surface Treatment: CHROMIUM OVERALL
  • Material: STEEL OVERALL
  • Wrenching Surface Size: 0.688 INCHES NOMINAL SINGLE END IN
  • Features Provided: MANUAL TOOL
  • Drive End Outside Diameter: 0.875 INCHES NOMINAL IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-073-3778, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is The American Society of Mechanical Engineers. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 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
NSN5120-01-073-3778
Primary Part NumberB107.1
Item NameSocket,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe American Society of Mechanical Engineers
StatusACTIVE
Wrenching End Opening Depth0.438 INCHES NOMINAL IN
Drive Surface Size0.375 INCHES NOMINAL SINGLE END IN
Surface TreatmentCHROMIUM OVERALL
MaterialSTEEL OVERALL
Wrenching Surface Size0.688 INCHES NOMINAL SINGLE END IN
Features ProvidedMANUAL TOOL
Drive End Outside Diameter0.875 INCHES NOMINAL IN
Wrenching End Outside Diameter0.938 INCHES NOMINAL IN
Nondefinitive Spec/std Data1 TYPE AND 2 CLASS
Specification/standard Data05047-ASME B107.1 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Style DesignatorINTERNAL-INTERNAL
Wrenching Surface Shape6 POINT SINGLE END INTERNAL
Drive End ShapeSQUARE SINGLE END INTERNAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5120-00-087-0696 INTERCHANGEABLE
Socket,socket Wrench
5120-00-166-7985 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
5120-01-081-8057 INTERCHANGEABLE
Socket,socket Wrench
Cross-Reference Index
Part NumberManufacturer
B107.1 The American Society of Mechanical Engineers (USA)
GGG-W-641 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
GGG-W-641 TY2CL1STB General Services Administration Federal Supply Service (USA)
B107.1 CL1STB General Services Administration Federal Supply Service (USA)
B107.1 TY1CL2 General Services Administration Federal Supply Service (USA)
Related Parts
5120-00-087-0696INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-166-7985INTERCHANGEABLE
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
5120-01-081-8057INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-01-161-1899INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-01-183-8020INTERCHANGEABLE
SOCKET,SOCKET WRENCH

Frequently Asked Questions

What is NSN 5120-01-073-3778?

NSN 5120-01-073-3778 is a Socket,socket Wrench, manufactured by The American Society of Mechanical Engineers, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-073-3778?

NSN 5120-01-073-3778 has 5 cross-referenced part numbers: B107.1 (The American Society of Mechanical Engineers), GGG-W-641 (Federal Specifications Promulgated by General Services Administration Washington DC), GGG-W-641 TY2CL1STB (General Services Administration Federal Supply Service), B107.1 CL1STB (General Services Administration Federal Supply Service), B107.1 TY1CL2 (General Services Administration Federal Supply Service).

What NSN replaces 5120-01-073-3778?

There are 12 known substitutes for 5120-01-073-3778: 5120-00-087-0696, 5120-00-166-7985, 5120-00-189-7919 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B107.1?

Key specifications for B107.1: Overall Length: 2.625 INCHES NOMINAL IN; Wrenching End Opening Depth: 0.438 INCHES NOMINAL IN; Drive Surface Size: 0.375 INCHES NOMINAL SINGLE END IN; Surface Treatment: CHROMIUM OVERALL. 14 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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