PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B107.1Socket,socket Wrench

The American Society of Mechanical Engineers · NSN 5120-00-243-7345 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-243-7345 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-243-7345. Primary manufacturer part number: B107.1.
Features
  • Socket,socket Wrench — FSC 5120
  • Drive Surface Size: 0.500 INCHES NOMINAL SINGLE END IN
  • Features Provided: MANUAL TOOL
  • Special Markings: 13/16 IN. IN
  • Surface Treatment: CHROMIUM OVERALL
  • Material: STEEL OVERALL
  • Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL
  • Specification/standard Data: 0U583-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-00-243-7345, 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 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 14 commercial cross-references from 10 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
NSN5120-00-243-7345
Primary Part NumberB107.1
Item NameSocket,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe American Society of Mechanical Engineers
StatusACTIVE
Drive Surface Size0.500 INCHES NOMINAL SINGLE END IN
Features ProvidedMANUAL TOOL
Special Markings13/16 IN. IN
Surface TreatmentCHROMIUM OVERALL
MaterialSTEEL OVERALL
Wrenching Surface Shape12 POINT SINGLE END INTERNAL
Specification/standard Data0U583-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Wrenching Surface Size0.812 INCHES NOMINAL SINGLE END IN
Style DesignatorINTERNAL-INTERNAL
Nondefinitive Spec/std Data1 TYPE AND 1 CLASS AND B STYLE
Drive End ShapeSQUARE SINGLE END INTERNAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5120-00-235-5898 INTERCHANGEABLE
Socket,socket Wrench
5120-00-242-3349 INTERCHANGEABLE
Socket,socket Wrench
5120-00-243-7339 INTERCHANGEABLE
Socket,socket Wrench
5120-00-243-7340 INTERCHANGEABLE
Socket,socket Wrench
5120-00-243-7341 INTERCHANGEABLE
Socket,socket Wrench
5120-00-243-7342 INTERCHANGEABLE
Socket,socket Wrench
5120-00-243-7343J5330 INTERCHANGEABLE
Socket,socket Wrench
The Stanley Works Dba Stanley Proto
5120-00-243-7346 INTERCHANGEABLE
Socket,socket Wrench
5120-00-243-7348 INTERCHANGEABLE
Socket,socket Wrench
5120-00-243-7350 INTERCHANGEABLE
Socket,socket Wrench
Cross-Reference Index
Part NumberManufacturer
B107.1 The American Society of Mechanical Engineers (USA)
SD-1226 Martin Sprocket and Gear Inc (USA)
A-A-1398 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
B107.1 CL1STB General Services Administration Federal Supply Service (USA)
GGG-W-641 TY2CL2STB General Services Administration Federal Supply Service (USA)
GGG-W-641 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
AS954 Sae International Dba Sae International (USA)
SD-1226 Trw Inc Hand Tools Div Trw Industrial Products Group (USA)
5327595 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
97-3910 Martin Sprocket and Gear Inc (USA)
B107.1 TY1CL2 General Services Administration Federal Supply Service (USA)
40826 S K Hand Tool Corp (USA)
AS954 TY1CL1STB General Services Administration Federal Supply Service (USA)
AS954 Society of Automotive Engineers Inc (USA)
Related Parts
5120-00-235-5898INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-242-3349INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-243-7339INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-243-7340INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-243-7341INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-243-7342INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-243-7343INTERCHANGEABLE
SOCKET,SOCKET WRENCH
J5330
5120-00-243-7346INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-243-7348INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-243-7350INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-243-7351INTERCHANGEABLE
SOCKET,SOCKET WRENCH
J5316
3020-00-287-6748INTERCHANGEABLE
GEAR,SPUR
40826

Frequently Asked Questions

What is NSN 5120-00-243-7345?

NSN 5120-00-243-7345 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 5120-00-243-7345?

NSN 5120-00-243-7345 has 14 cross-referenced part numbers: B107.1 (The American Society of Mechanical Engineers), SD-1226 (Martin Sprocket and Gear Inc), A-A-1398 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), B107.1 CL1STB (General Services Administration Federal Supply Service), GGG-W-641 TY2CL2STB (General Services Administration Federal Supply Service) and 9 more.

What NSN replaces 5120-00-243-7345?

There are 12 known substitutes for 5120-00-243-7345: 5120-00-235-5898, 5120-00-242-3349, 5120-00-243-7339 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B107.1?

Key specifications for B107.1: Overall Length: 2.930 INCHES MINIMUM IN; Drive Surface Size: 0.500 INCHES NOMINAL SINGLE END IN; Features Provided: MANUAL TOOL; Special Markings: 13/16 IN. IN. 12 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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