PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SM16Socket,socket Wrench

Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc · NSN 5120-01-661-8443 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-661-8443 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-661-8443. Primary manufacturer part number: SM16.
Features
  • Socket,socket Wrench — FSC 5120
  • Wrenching Surface Size: 16.0 MILLIMETERS NOMINAL SINGLE END MM
  • Features Provided: MANUAL TOOL
  • Specification/standard Data: 0U583-SAE AS955 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Style Designator: INTERNAL-INTERNAL
  • Surface Treatment: CHROMIUM OVERALL
  • Nondefinitive Spec/std Data: 1 TYPE AND 1 CLASS AND C STYLE
  • 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 5120-01-661-8443, 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-661-8443
Primary Part NumberSM16
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 Size16.0 MILLIMETERS NOMINAL SINGLE END MM
Features ProvidedMANUAL TOOL
Specification/standard Data0U583-SAE AS955 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Style DesignatorINTERNAL-INTERNAL
Surface TreatmentCHROMIUM OVERALL
Nondefinitive Spec/std Data1 TYPE AND 1 CLASS AND C STYLE
Wrenching Surface Shape12 POINT SINGLE END INTERNAL
MaterialSTEEL OVERALL
Drive End ShapeSQUARE SINGLE END INTERNAL
Drive Surface Size0.500 INCHES NOMINAL SINGLE END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3455-00-194-025516163 INTERCHANGEABLE
Cutter,milling,end
Precision Industries Inc Sharpaloy Div
6220-00-682-8292210-36V INTERCHANGEABLE
Stop Light-Taillight,vehicular
J. W. Speaker Corporation Dba Jw Speaker Corp
4730-01-273-7146SM16 INTERCHANGEABLE
Clamp,hose
B & B Tritech Inc.
Cross-Reference Index
Part NumberManufacturer
AS955 Sae International Dba Sae International (USA)
11A7000790-7 Devcom Chemical Biological Center Dba Chemical Biological Center Div U.s. Dept of Army (USA)
AS955 TY1CL1STC General Services Administration Federal Supply Service (USA)
SM16 PRIMARY Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
Related Parts
3455-00-194-0255INTERCHANGEABLE
CUTTER,MILLING,END
16163
6220-00-682-8292INTERCHANGEABLE
STOP LIGHT-TAILLIGHT,VEHICULAR
210-36V
4730-01-273-7146INTERCHANGEABLE
CLAMP,HOSE
SM16

Frequently Asked Questions

What is NSN 5120-01-661-8443?

NSN 5120-01-661-8443 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 5120-01-661-8443?

NSN 5120-01-661-8443 has 4 cross-referenced part numbers: AS955 (Sae International Dba Sae International), 11A7000790-7 (Devcom Chemical Biological Center Dba Chemical Biological Center Div U.s. Dept of Army), AS955 TY1CL1STC (General Services Administration Federal Supply Service), SM16 (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc).

What NSN replaces 5120-01-661-8443?

There are 3 known substitutes for 5120-01-661-8443: 3455-00-194-0255, 6220-00-682-8292, 4730-01-273-7146. Verify interchangeability with system specifications before substitution.

What are the specifications of SM16?

Key specifications for SM16: Wrenching Surface Size: 16.0 MILLIMETERS NOMINAL SINGLE END MM; Features Provided: MANUAL TOOL; Specification/standard Data: 0U583-SAE AS955 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD; Style Designator: INTERNAL-INTERNAL. 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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