Socket, Socket Wrench5120-01-581-0239

NSN 5120-01-581-0239 · NIIN 015810239

FSC 5120 — Hand Tools, Nonedged, Nonpowered · FSG 51 — Hand Tools

Government record, cited

Also searched as 5120-01-581-0239 · 5120015810239 · NIIN 015810239 · 01-581-0239 · FSC 5120 Hand Tools, Nonedged, Nonpowered · 11-111 · 11-111 · 11-111

Nearby stock numbers ← 5120-01-581-0077 Mandrel, Riveter, Blind · 5120-01-581-0246 Socket, Socket Wrench →

Features

Socket,socket Wrench — FSC 5120
Drive Surface Size: 0.375 INCHES NOMINAL SINGLE END IN
Wrenching Surface Size: 0.344 INCHES NOMINAL SINGLE END IN
Wrenching End Outside Diameter: 0.586 INCHES NOMINAL IN
Style Designator: INTERNAL-INTERNAL
Features Provided: MANUAL TOOL
Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL
Drive End Shape: SQUARE SINGLE END INTERNAL

Identification

NSN: 5120-01-581-0239
NIIN: 015810239
FSC: 5120 — Hand Tools, Nonedged, Nonpowered
FSG: 51 — Hand Tools

General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-581-0239, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5120-01-581-0239
Item Name	Socket,socket Wrench
FSC / FSG	5120 / 51 — Hand Tools, Nonedged, Nonpowered
Status	ACTIVE
Drive Surface Size	0.375 INCHES NOMINAL SINGLE END IN
Wrenching Surface Size	0.344 INCHES NOMINAL SINGLE END IN
Wrenching End Outside Diameter	0.586 INCHES NOMINAL IN
Style Designator	INTERNAL-INTERNAL
Features Provided	MANUAL TOOL
Wrenching Surface Shape	12 POINT SINGLE END INTERNAL
Drive End Shape	SQUARE SINGLE END INTERNAL
Wrenching End Opening Depth	0.275 INCHES NOMINAL IN
Surface Treatment	CHROMIUM OVERALL
Drive End Outside Diameter	0.660 INCHES NOMINAL IN
Material	STEEL OVERALL

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

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
11-111	5/9 Secondary reference Armstrong Bros Tool Co
11-111	5/9 Secondary reference Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.
11-111	3/9 Design control — primary reference Apex Tool Group, Llc Dba Nicholson

Frequently Asked Questions

What is NSN 5120-01-581-0239?

NSN 5120-01-581-0239 is a Socket,socket Wrench, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.

What are the specifications of 5120-01-581-0239?

Key specifications for 5120-01-581-0239: Drive Surface Size: 0.375 INCHES NOMINAL SINGLE END IN; Wrenching Surface Size: 0.344 INCHES NOMINAL SINGLE END IN; Wrenching End Outside Diameter: 0.586 INCHES NOMINAL IN; Style Designator: INTERNAL-INTERNAL. 11 specifications are documented in the U.S. Government catalog.

Is NSN 5120-01-581-0239 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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