PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B107.1 CL1STBSocket,socket Wrench

General Services Administration Federal Supply Service · NSN 5120-00-243-7346 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-243-7346 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-243-7346. Primary manufacturer part number: B107.1 CL1STB.
Features
  • Socket,socket Wrench — FSC 5120
  • Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL
  • Drive End Shape: SQUARE SINGLE END INTERNAL
  • Surface Treatment: CHROMIUM OVERALL
  • Nondefinitive Spec/std Data: 1 TYPE AND 1 CLASS AND B STYLE
  • Style Designator: INTERNAL-INTERNAL
  • Drive Surface Size: 0.500 INCHES NOMINAL SINGLE END IN
  • Features Provided: MANUAL TOOL
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-00-243-7346, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is General Services Administration Federal Supply Service. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-00-243-7346
Primary Part NumberB107.1 CL1STB
Item NameSocket,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerGeneral Services Administration Federal Supply Service
StatusCANCELLED
Wrenching Surface Shape12 POINT SINGLE END INTERNAL
Drive End ShapeSQUARE SINGLE END INTERNAL
Surface TreatmentCHROMIUM OVERALL
Nondefinitive Spec/std Data1 TYPE AND 1 CLASS AND B STYLE
Style DesignatorINTERNAL-INTERNAL
Drive Surface Size0.500 INCHES NOMINAL SINGLE END IN
Features ProvidedMANUAL TOOL
MaterialSTEEL OVERALL
Special Markings11/16 IN. IN
Wrenching Surface Size0.688 INCHES NOMINAL SINGLE END IN
Specification/standard Data0U583-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Lifecycle & Compliance
Acquisition StatusCANCELLED
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
5120-00-243-7345 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 CL1STB General Services Administration Federal Supply Service (USA)
B107.1 The American Society of Mechanical Engineers (USA)
AS954 Society of Automotive Engineers Inc (USA)
A-A-1398 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
AS954 TY1CL1STB General Services Administration Federal Supply Service (USA)
GGG-W-641 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
B107.1 TY1CL2 General Services Administration Federal Supply Service (USA)
AS954 Sae International Dba Sae International (USA)
349148 Allen Mfg Co Sub of Chicago Pneumatic Tool Co (USA)
40822 S K Hand Tool Corp (USA)
GGG-W-641 TY2CL2STB General Services Administration Federal Supply Service (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
5120-00-243-7345INTERCHANGEABLE
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
5961-01-033-9369INTERCHANGEABLE
TRANSISTOR

Frequently Asked Questions

What is NSN 5120-00-243-7346?

NSN 5120-00-243-7346 is a Socket,socket Wrench, manufactured by General Services Administration Federal Supply Service, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-243-7346?

NSN 5120-00-243-7346 has 11 cross-referenced part numbers: B107.1 CL1STB (General Services Administration Federal Supply Service), B107.1 (The American Society of Mechanical Engineers), AS954 (Society of Automotive Engineers Inc), A-A-1398 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), AS954 TY1CL1STB (General Services Administration Federal Supply Service) and 6 more.

What NSN replaces 5120-00-243-7346?

There are 12 known substitutes for 5120-00-243-7346: 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 CL1STB?

Key specifications for B107.1 CL1STB: Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL; Drive End Shape: SQUARE SINGLE END INTERNAL; Surface Treatment: CHROMIUM OVERALL; Nondefinitive Spec/std Data: 1 TYPE AND 1 CLASS AND B STYLE. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-243-7346 still in active supply?

NSN 5120-00-243-7346 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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