Socket, Socket Wrench5120-01-657-7381

NSN 5120-01-657-7381 · NIIN 016577381

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

Government record, cited

Also searched as 5120-01-657-7381 · 5120016577381 · NIIN 016577381 · 01-657-7381 · FSC 5120 Hand Tools, Nonedged, Nonpowered

Nearby stock numbers ← 5120-01-657-7331 Support, Pole Raising · 5120-01-657-7392 Wrench Set, Combination Box and O →

Features

Socket,socket Wrench — FSC 5120
Drive Surface Size: 0.750 INCHES NOMINAL SECOND END IN
Wrenching Surface Size: 0.9375 INCHES NOMINAL FIRST END IN
Wrenching End Outside Diameter: 1.390 INCHES NOMINAL IN
Style Designator: INTERNAL-INTERNAL
Wrenching Surface Shape: 12 POINT FIRST END INTERNAL
Drive End Shape: SQUARE SECOND END INTERNAL
Surface Treatment: CHROMATE OVERALL

Identification

NSN: 5120-01-657-7381
NIIN: 016577381
FSC: 5120 — Hand Tools, Nonedged, Nonpowered
FSG: 51 — Hand Tools

General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-657-7381, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5120-01-657-7381
Item Name	Socket,socket Wrench
FSC / FSG	5120 / 51 — Hand Tools, Nonedged, Nonpowered
Status	ACTIVE
Drive Surface Size	0.750 INCHES NOMINAL SECOND END IN
Wrenching Surface Size	0.9375 INCHES NOMINAL FIRST END IN
Wrenching End Outside Diameter	1.390 INCHES NOMINAL IN
Style Designator	INTERNAL-INTERNAL
Wrenching Surface Shape	12 POINT FIRST END INTERNAL
Drive End Shape	SQUARE SECOND END INTERNAL
Surface Treatment	CHROMATE OVERALL
Drive End Outside Diameter	1.390 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
93604775	3/9 Design control — primary reference Apex Tool Group, Llc Dba Nicholson

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 5120-01-657-7381?

NSN 5120-01-657-7381 is a Socket,socket Wrench, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.

What are the specifications of 5120-01-657-7381?

Key specifications for 5120-01-657-7381: Drive Surface Size: 0.750 INCHES NOMINAL SECOND END IN; Wrenching Surface Size: 0.9375 INCHES NOMINAL FIRST END IN; Wrenching End Outside Diameter: 1.390 INCHES NOMINAL IN; Style Designator: INTERNAL-INTERNAL. 9 specifications are documented in the U.S. Government catalog.

Is NSN 5120-01-657-7381 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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