PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B107.1 CL3Socket,socket Wrench

General Services Administration Federal Supply Service · NSN 5120-00-237-0978 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-237-0978 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-237-0978. Primary manufacturer part number: B107.1 CL3.
Features
  • Socket,socket Wrench — FSC 5120
  • Material: STEEL OVERALL
  • Style Designator: UNIVERSAL JOINT
  • Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL
  • Drive Surface Size: 0.375 INCHES NOMINAL SINGLE END IN
  • Wrenching End Outside Diameter: 0.820 INCHES MAXIMUM IN
  • Wrenching Surface Size: 0.562 INCHES NOMINAL SINGLE END IN
  • Wrenching End Opening Depth: 0.312 INCHES MINIMUM IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-00-237-0978, 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 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 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: Cancelled.

Technical Specifications
ParameterValue
NSN5120-00-237-0978
Primary Part NumberB107.1 CL3
Item NameSocket,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerGeneral Services Administration Federal Supply Service
StatusCANCELLED
MaterialSTEEL OVERALL
Style DesignatorUNIVERSAL JOINT
Wrenching Surface Shape12 POINT SINGLE END INTERNAL
Drive Surface Size0.375 INCHES NOMINAL SINGLE END IN
Wrenching End Outside Diameter0.820 INCHES MAXIMUM IN
Wrenching Surface Size0.562 INCHES NOMINAL SINGLE END IN
Wrenching End Opening Depth0.312 INCHES MINIMUM IN
Features ProvidedMANUAL TOOL
Nondefinitive Spec/std Data1 TYPE AND 2 CLASS
Drive End ShapeSQUARE SINGLE END INTERNAL
Specification/standard Data0U583-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Surface TreatmentCHROMIUM OVERALL
Drive End Outside Diameter0.820 INCHES MAXIMUM IN
Special Markings9/16 IN. IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3110-00-108-9352 INTERCHANGEABLE
Bearing,ball,annular
5120-00-142-5156 INTERCHANGEABLE
Socket,socket Wrench
5120-00-152-2285 INTERCHANGEABLE
Socket Set,socket Wrench
3020-00-181-6075371-8 INTERCHANGEABLE
Pinion,knob Stem Ad
Elbitamerica, Inc.
5120-00-181-6785 INTERCHANGEABLE
Socket,socket Wrench
5120-00-184-86533718 INTERCHANGEABLE
Wrench,open End
Martin Sprocket and Gear Inc
5120-00-199-7686 INTERCHANGEABLE
Socket,socket Wrench
5120-00-235-5847 INTERCHANGEABLE
Socket,socket Wrench
5120-00-235-5872 INTERCHANGEABLE
Socket,socket Wrench
5120-00-236-7611 INTERCHANGEABLE
Socket,socket Wrench
Cross-Reference Index
Part NumberManufacturer
B107.1 CL3 General Services Administration Federal Supply Service (USA)
AS954 Society of Automotive Engineers Inc (USA)
AS954 Sae International Dba Sae International (USA)
F18 Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
SSU386D Westward Tools (CAN)
B107.1 The American Society of Mechanical Engineers (USA)
A-A-1401 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
GGG-W-641 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
3718 Wright Tool Company, Llc (USA)
AS954 TY1CL2 General Services Administration Federal Supply Service (USA)
418J Thorsen Tool Co Sub of Wallace-Murray Corp (USA)
Related Parts
3110-00-108-9352INTERCHANGEABLE
BEARING,BALL,ANNULAR
5120-00-142-5156INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-152-2285INTERCHANGEABLE
SOCKET SET,SOCKET WRENCH
3020-00-181-6075INTERCHANGEABLE
PINION,KNOB STEM AD
371-8
5120-00-181-6785INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-184-8653INTERCHANGEABLE
WRENCH,OPEN END
3718
5120-00-199-7686INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-235-5847INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-235-5872INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-236-7611INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-236-7613INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-00-236-7615INTERCHANGEABLE
SOCKET,SOCKET WRENCH

Frequently Asked Questions

What is NSN 5120-00-237-0978?

NSN 5120-00-237-0978 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 5120-00-237-0978?

NSN 5120-00-237-0978 has 11 cross-referenced part numbers: B107.1 CL3 (General Services Administration Federal Supply Service), AS954 (Society of Automotive Engineers Inc), AS954 (Sae International Dba Sae International), F18 (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc), SSU386D (Westward Tools) and 6 more.

What NSN replaces 5120-00-237-0978?

There are 12 known substitutes for 5120-00-237-0978: 3110-00-108-9352, 5120-00-142-5156, 5120-00-152-2285 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B107.1 CL3?

Key specifications for B107.1 CL3: Overall Length: 1.969 INCHES MAXIMUM IN; Material: STEEL OVERALL; Style Designator: UNIVERSAL JOINT; Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-237-0978 still in active supply?

NSN 5120-00-237-0978 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.
PartsTable Design LLC · partstable.com