PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ET18Key,socket Head Screw

Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc · NSN 5120-01-397-5879 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-397-5879 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-397-5879. Primary manufacturer part number: ET18.
Features
  • Key,socket Head Screw — FSC 5120
  • Wrenching Surface Size: 0.125 INCHES NOMINAL BOTH ENDS IN
  • Surface Treatment: OXIDE OVERALL
  • Wrenching Surface Shape: HEXAGON BOTH ENDS EXTERNAL
  • Style Designator: L-HANDLE
  • Features Provided: SHORT SERIES
  • Material: STEEL OVERALL
  • 5 verified cross-references
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Key,socket Head Screw, cataloged under National Stock Number 5120-01-397-5879, 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 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-01-397-5879
Primary Part NumberET18
Item NameKey,socket Head Screw
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerIdsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
StatusCANCELLED
Wrenching Surface Size0.125 INCHES NOMINAL BOTH ENDS IN
Surface TreatmentOXIDE OVERALL
Wrenching Surface ShapeHEXAGON BOTH ENDS EXTERNAL
Style DesignatorL-HANDLE
Features ProvidedSHORT SERIES
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
6145-00-184-5483 INTERCHANGEABLE
Wire,electrical
5133-00-262-2180 INTERCHANGEABLE
Drill,twist
5310-00-359-04555248962 INTERCHANGEABLE
Washer,flat
U S Army Tank Automotive Command Amsta-Im-Mm
6665-01-012-982315108 INTERCHANGEABLE
Electrode,electrical
Miller M C Co Inc
5962-01-219-8287DG211CJ INTERCHANGEABLE
Microcircuit,linear
Siliconix Incorporated Div Siliconix
6240-01-367-068915-108 INTERCHANGEABLE
Lamp,incandescent
Clausing Industrial, Inc. Dba Clausing Service Center Div Clausing Service Center
4130-01-605-147015-108 INTERCHANGEABLE
Compressor,refrigeration
Van Steenburgh Engineering Laboratories, Inc
5306-01-621-716515108 INTERCHANGEABLE
Bolt,machine
Fastenal Co Dba Fastenal Co Div Fastenal Manufacturing
Cross-Reference Index
Part NumberManufacturer
10760ACV-1/8 Internova - Cz Gmbh, Spol. S R.o. (CZE)
43550008 Internova - Cz Gmbh, Spol. S R.o. (CZE)
ET18 PRIMARY Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
15108 PRIMARY Eklind Tool Co (USA)
151.2635 Jp Stroje S.r.o. (CZE)
Related Parts
6145-00-184-5483INTERCHANGEABLE
WIRE,ELECTRICAL
5133-00-262-2180INTERCHANGEABLE
DRILL,TWIST
5310-00-359-0455INTERCHANGEABLE
WASHER,FLAT
5248962
6665-01-012-9823INTERCHANGEABLE
ELECTRODE,ELECTRICAL
15108
5962-01-219-8287INTERCHANGEABLE
MICROCIRCUIT,LINEAR
DG211CJ
6240-01-367-0689INTERCHANGEABLE
LAMP,INCANDESCENT
15-108
4130-01-605-1470INTERCHANGEABLE
COMPRESSOR,REFRIGERATION
15-108
5306-01-621-7165INTERCHANGEABLE
BOLT,MACHINE
15108

Frequently Asked Questions

What is NSN 5120-01-397-5879?

NSN 5120-01-397-5879 is a Key,socket Head Screw, manufactured by Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-01-397-5879?

NSN 5120-01-397-5879 has 5 cross-referenced part numbers: 10760ACV-1/8 (Internova - Cz Gmbh, Spol. S R.o.), 43550008 (Internova - Cz Gmbh, Spol. S R.o.), ET18 (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc), 15108 (Eklind Tool Co), 151.2635 (Jp Stroje S.r.o.).

What NSN replaces 5120-01-397-5879?

There are 8 known substitutes for 5120-01-397-5879: 6145-00-184-5483, 5133-00-262-2180, 5310-00-359-0455 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of ET18?

Key specifications for ET18: Wrenching Surface Size: 0.125 INCHES NOMINAL BOTH ENDS IN; Surface Treatment: OXIDE OVERALL; Wrenching Surface Shape: HEXAGON BOTH ENDS EXTERNAL; Style Designator: L-HANDLE. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-01-397-5879 still in active supply?

NSN 5120-01-397-5879 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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