PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

F161Socket,socket Wrench

Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc · NSN 5120-01-661-6780 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-661-6780 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-661-6780. Primary manufacturer part number: F161.
Features
  • Socket,socket Wrench — FSC 5120
  • Drive Surface Size: 0.375 INCHES NOMINAL SINGLE END IN
  • Material: STEEL OVERALL
  • Drive End Shape: SQUARE SINGLE END INTERNAL
  • Surface Treatment: CHROMIUM OVERALL
  • Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL
  • Features Provided: MANUAL TOOL
  • Style Designator: INTERNAL-INTERNAL
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-661-6780, 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-661-6780
Primary Part NumberF161
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
Drive Surface Size0.375 INCHES NOMINAL SINGLE END IN
MaterialSTEEL OVERALL
Drive End ShapeSQUARE SINGLE END INTERNAL
Surface TreatmentCHROMIUM OVERALL
Wrenching Surface Shape12 POINT SINGLE END INTERNAL
Features ProvidedMANUAL TOOL
Style DesignatorINTERNAL-INTERNAL
Wrenching Surface Size0.500 INCHES NOMINAL SINGLE END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5315-00-213-7544F161 INTERCHANGEABLE
Pin,straight,headless
Cvg Sprague Devices, Llc Dba Cvg Sprague Devices, Llc
5910-01-064-9676 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
5331-01-240-5997 INTERCHANGEABLE
O-Ring
5120-01-350-1007 INTERCHANGEABLE
Socket,socket Wrench
3405-01-416-8412F-16-1 INTERCHANGEABLE
Saw,band,cutoff
W.f. Wells, Inc.
Cross-Reference Index
Part NumberManufacturer
F161 PRIMARY Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
11A7000766-3 Devcom Chemical Biological Center Dba Chemical Biological Center Div U.s. Dept of Army (USA)
Related Parts
5315-00-213-7544INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
F161
5910-01-064-9676INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC
5331-01-240-5997INTERCHANGEABLE
O-RING
5120-01-350-1007INTERCHANGEABLE
SOCKET,SOCKET WRENCH
3405-01-416-8412INTERCHANGEABLE
SAW,BAND,CUTOFF
F-16-1

Frequently Asked Questions

What is NSN 5120-01-661-6780?

NSN 5120-01-661-6780 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 5120-01-661-6780?

NSN 5120-01-661-6780 has 2 cross-referenced part numbers: F161 (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc), 11A7000766-3 (Devcom Chemical Biological Center Dba Chemical Biological Center Div U.s. Dept of Army).

What NSN replaces 5120-01-661-6780?

There are 5 known substitutes for 5120-01-661-6780: 5315-00-213-7544, 5910-01-064-9676, 5331-01-240-5997 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of F161?

Key specifications for F161: Drive Surface Size: 0.375 INCHES NOMINAL SINGLE END IN; End Item Identification: ARSS; Overall Length: 0.938 INCHES NOMINAL IN; Material: STEEL OVERALL. 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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