Extension, Socket Wrench5120-01-684-9945

NSN 5120-01-684-9945 · NIIN 016849945 · Part number THTMXK140

Snap-on Tools Corp · FSC 5120 — Hand Tools, Nonedged, Nonpowered · FSG 51 — Hand Tools · CAGE 7L414

Government record, cited

NSN 5120-01-684-9945 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-684-9945. Manufacturer of record part number: THTMXK140.

Also searched as 5120-01-684-9945 · 5120016849945 · NIIN 016849945 · 01-684-9945 · FSC 5120 Hand Tools, Nonedged, Nonpowered · CAGE 7L414 · THTMXK140

Nearby stock numbers ← 5120-01-684-9928 Socket, Socket Wrench · 5120-01-684-9958 Socket, Socket Wrench →

Features

Extension,socket Wrench — FSC 5120
Drive Surface Size: 0.250 INCHES NOMINAL FIRST END IN
Drive End Shape: SQUARE FIRST END EXTERNAL
1 manufacturer part number on file
Manufacturer of record: Snap-on Tools Corp

Identification

NSN: 5120-01-684-9945
NIIN: 016849945
FSC: 5120 — Hand Tools, Nonedged, Nonpowered
FSG: 51 — Hand Tools
Primary part number: THTMXK140
Manufacturer: Snap-on Tools Corp

General Description

The Extension,socket Wrench, cataloged under National Stock Number 5120-01-684-9945, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is Snap-on Tools Corp. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5120-01-684-9945
Primary Part Number	THTMXK140
Item Name	Extension,socket Wrench
FSC / FSG	5120 / 51 — Hand Tools, Nonedged, Nonpowered
Manufacturer	Snap-on Tools Corp
Status	ACTIVE
Drive Surface Size	0.250 INCHES NOMINAL FIRST END IN
Drive End Shape	SQUARE FIRST END EXTERNAL

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
THTMXK140 PRIMARY	Snap-on Tools Corp (USA)

No interchangeability data on file.

Other items in FSC 5120 — Hand Tools, Nonedged, Nonpowered

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5120-00-001-2642

ADAPTER,TORQUE WRENCH

5120-00-001-2644

ADAPTER,TORQUE WRENCH

5120-00-001-2650

INSERTER,SEAL

5120-00-001-2651

5120-00-001-2651 · Item name not on file

5120-00-001-2652

INSTALLING TOOL,SHAFT

5120-00-001-2653

REMOVER,PREFORMED PACKING

5120-00-001-2654

REMOVER,PREFORMED PACKING

5120-00-001-2655

SOCKET,WRENCH,FACE SPANNER

Frequently Asked Questions

What is NSN 5120-01-684-9945?

NSN 5120-01-684-9945 is a Extension,socket Wrench, manufactured by Snap-on Tools Corp, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.

What part numbers are listed for NSN 5120-01-684-9945?

NSN 5120-01-684-9945 has 1 manufacturer part number on file: THTMXK140 (Snap-on Tools Corp).

What are the specifications of THTMXK140?

Key specifications for THTMXK140: Drive Surface Size: 0.250 INCHES NOMINAL FIRST END IN; Overall Length: 14.015 INCHES NOMINAL IN; Drive End Shape: SQUARE FIRST END EXTERNAL; Special Features: WIDTH:0.905",HIGHT:0.039",EIGHT:0.450LBS,CHROME FINISH,12 POINT LBS. 2 specifications are documented in the U.S. Government catalog.

Is NSN 5120-01-684-9945 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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