PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SWM181Socket,socket Wrench

Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc · NSN 5120-01-661-8417 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-661-8417 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-661-8417. Primary manufacturer part number: SWM181.
Features
  • Socket,socket Wrench — FSC 5120
  • Wrenching Surface Size: 18.0 MILLIMETERS NOMINAL SINGLE END MM
  • Features Provided: MANUAL TOOL
  • Drive Surface Size: 0.500 INCHES NOMINAL SINGLE END IN
  • Material: STEEL OVERALL
  • Drive End Shape: SQUARE SINGLE END INTERNAL
  • Style Designator: INTERNAL-INTERNAL
  • Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-661-8417, 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 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-661-8417
Primary Part NumberSWM181
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
Wrenching Surface Size18.0 MILLIMETERS NOMINAL SINGLE END MM
Features ProvidedMANUAL TOOL
Drive Surface Size0.500 INCHES NOMINAL SINGLE END IN
MaterialSTEEL OVERALL
Drive End ShapeSQUARE SINGLE END INTERNAL
Style DesignatorINTERNAL-INTERNAL
Wrenching Surface Shape12 POINT SINGLE END INTERNAL
Surface TreatmentCHROMIUM OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5120-00-263-4142 INTERCHANGEABLE
Socket,socket Wrench
Cross-Reference Index
Part NumberManufacturer
11A7000791-9 Devcom Chemical Biological Center Dba Chemical Biological Center Div U.s. Dept of Army (USA)
SWM181 PRIMARY Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
Related Parts
5120-00-263-4142INTERCHANGEABLE
SOCKET,SOCKET WRENCH

Frequently Asked Questions

What is NSN 5120-01-661-8417?

NSN 5120-01-661-8417 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 5120-01-661-8417?

NSN 5120-01-661-8417 has 2 cross-referenced part numbers: 11A7000791-9 (Devcom Chemical Biological Center Dba Chemical Biological Center Div U.s. Dept of Army), SWM181 (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc).

What NSN replaces 5120-01-661-8417?

There is 1 known substitute for 5120-01-661-8417: 5120-00-263-4142. Verify interchangeability with system specifications before substitution.

What are the specifications of SWM181?

Key specifications for SWM181: Overall Length: 38.1 MILLIMETERS NOMINAL MM; End Item Identification: ARSS; Wrenching Surface Size: 18.0 MILLIMETERS NOMINAL SINGLE END MM; Features Provided: MANUAL TOOL. 10 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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