PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FSS241Socket,socket Wrench

Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc · NSN 5120-01-641-1064 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-641-1064 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-641-1064. Primary manufacturer part number: FSS241.
Features
  • Socket,socket Wrench — FSC 5120
  • Material: STEEL OVERALL
  • Wrenching Surface Size: 0.750 INCHES NOMINAL SINGLE END IN
  • Specification/standard Data: 05047-ASME B107.1 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Drive Surface Size: 0.375 INCHES NOMINAL SINGLE END IN
  • Surface Treatment: CHROMIUM OVERALL
  • Style Designator: INTERNAL-INTERNAL
  • Nondefinitive Spec/std Data: 1 TYPE AND 3 CLASS
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-641-1064, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-641-1064
Primary Part NumberFSS241
Item NameSocket,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerIdsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
StatusACTIVE
MaterialSTEEL OVERALL
Wrenching Surface Size0.750 INCHES NOMINAL SINGLE END IN
Specification/standard Data05047-ASME B107.1 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Drive Surface Size0.375 INCHES NOMINAL SINGLE END IN
Surface TreatmentCHROMIUM OVERALL
Style DesignatorINTERNAL-INTERNAL
Nondefinitive Spec/std Data1 TYPE AND 3 CLASS
Drive End ShapeSQUARE SINGLE END INTERNAL
Wrenching Surface Shape6 POINT SINGLE END INTERNAL
Features ProvidedMANUAL TOOL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5120-01-366-8357 INTERCHANGEABLE
Socket,socket Wrench
5120-01-398-778800943003000 INTERCHANGEABLE
Socket,socket Wrench
Sears, Roebuck and Co. Dba Sears Div Sears Commercial
5120-01-399-9545 INTERCHANGEABLE
Socket,socket Wrench
5120-01-429-3532 INTERCHANGEABLE
Socket Set,socket Wrench
5120-01-429-3589 INTERCHANGEABLE
Socket Set,socket Wrench
Cross-Reference Index
Part NumberManufacturer
FSS241 Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
B107.1 The American Society of Mechanical Engineers (USA)
FSS241 Snap-on Uk Holdings Limited (GBR)
B107.1 TY1CL3 General Services Administration Federal Supply Service (USA)
Related Parts
5120-01-366-8357INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-01-398-7788INTERCHANGEABLE
SOCKET,SOCKET WRENCH
00943003000
5120-01-399-9545INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-01-429-3532INTERCHANGEABLE
SOCKET SET,SOCKET WRENCH
5120-01-429-3589INTERCHANGEABLE
SOCKET SET,SOCKET WRENCH

Frequently Asked Questions

What is NSN 5120-01-641-1064?

NSN 5120-01-641-1064 is a Socket,socket Wrench, manufactured by Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-641-1064?

NSN 5120-01-641-1064 has 4 cross-referenced part numbers: FSS241 (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc), B107.1 (The American Society of Mechanical Engineers), FSS241 (Snap-on Uk Holdings Limited), B107.1 TY1CL3 (General Services Administration Federal Supply Service).

What NSN replaces 5120-01-641-1064?

There are 5 known substitutes for 5120-01-641-1064: 5120-01-366-8357, 5120-01-398-7788, 5120-01-399-9545 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FSS241?

Key specifications for FSS241: Overall Length: 1.625 INCHES NOMINAL IN; Material: STEEL OVERALL; Wrenching Surface Size: 0.750 INCHES NOMINAL SINGLE END IN; Specification/standard Data: 05047-ASME B107.1 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD. 11 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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