PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

F201Socket,socket Wrench

Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc · NSN 5120-01-661-6783 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-661-6783 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-661-6783. Primary manufacturer part number: F201.
Features
  • Socket,socket Wrench — FSC 5120
  • Drive Surface Size: 0.375 INCHES NOMINAL SINGLE END IN
  • Wrenching Surface Size: 0.625 INCHES NOMINAL SINGLE END IN
  • Features Provided: MANUAL TOOL
  • Style Designator: INTERNAL-INTERNAL
  • Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL
  • Drive End Shape: SQUARE SINGLE END INTERNAL
  • Surface Treatment: CHROMIUM OVERALL
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-661-6783, 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-661-6783
Primary Part NumberF201
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
Wrenching Surface Size0.625 INCHES NOMINAL SINGLE END IN
Features ProvidedMANUAL TOOL
Style DesignatorINTERNAL-INTERNAL
Wrenching Surface Shape12 POINT SINGLE END INTERNAL
Drive End ShapeSQUARE SINGLE END INTERNAL
Surface TreatmentCHROMIUM OVERALL
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5905-00-400-5969F20J1R0 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
5310-00-508-2445F201 INTERCHANGEABLE
Nut
Circor Naval Solutions Llc Dba Warren Pumps
4820-00-691-3434F201 INTERCHANGEABLE
Valve,check
Ausco Inc
2540-00-921-5069 INTERCHANGEABLE
Guard,splash,vehicular
4820-01-238-4061F201A INTERCHANGEABLE
Valve,ball
Martin-Decker Totco, Inc Dba M/d Totco
3010-01-373-0169F201ROUGHBORE INTERCHANGEABLE
Coupling,shaft,flexible
Ameridrives International Llc Dba Ameridrives International Llc
Cross-Reference Index
Part NumberManufacturer
11A7000766-5 Devcom Chemical Biological Center Dba Chemical Biological Center Div U.s. Dept of Army (USA)
F201 PRIMARY Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
Related Parts
5905-00-400-5969INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
F20J1R0
5310-00-508-2445INTERCHANGEABLE
NUT
F201
4820-00-691-3434INTERCHANGEABLE
VALVE,CHECK
F201
2540-00-921-5069INTERCHANGEABLE
GUARD,SPLASH,VEHICULAR
4820-01-238-4061INTERCHANGEABLE
VALVE,BALL
F201A
3010-01-373-0169INTERCHANGEABLE
COUPLING,SHAFT,FLEXIBLE
F201ROUGHBORE

Frequently Asked Questions

What is NSN 5120-01-661-6783?

NSN 5120-01-661-6783 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 5120-01-661-6783?

NSN 5120-01-661-6783 has 2 cross-referenced part numbers: 11A7000766-5 (Devcom Chemical Biological Center Dba Chemical Biological Center Div U.s. Dept of Army), F201 (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc).

What NSN replaces 5120-01-661-6783?

There are 6 known substitutes for 5120-01-661-6783: 5905-00-400-5969, 5310-00-508-2445, 4820-00-691-3434 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of F201?

Key specifications for F201: Drive Surface Size: 0.375 INCHES NOMINAL SINGLE END IN; Wrenching Surface Size: 0.625 INCHES NOMINAL SINGLE END IN; Features Provided: MANUAL TOOL; Style Designator: INTERNAL-INTERNAL. 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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