Socket, Socket Wrench5120-01-620-7988

NSN 5120-01-620-7988 · NIIN 016207988 · Part number S-1-4-31

Bird-Johnson Propeller Company, Llc · FSC 5120 — Hand Tools, Nonedged, Nonpowered · FSG 51 — Hand Tools · CAGE 07309

Government record, cited

NSN 5120-01-620-7988 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-620-7988. Manufacturer of record part number: S-1-4-31.

Also searched as 5120-01-620-7988 · 5120016207988 · NIIN 016207988 · 01-620-7988 · FSC 5120 Hand Tools, Nonedged, Nonpowered · CAGE 07309 · S-1-4-31

Nearby stock numbers ← 5120-01-620-7153 Pliers · 5120-01-620-7989 Socket, Socket Wrench →

Features

Socket,socket Wrench — FSC 5120
Drive Surface Size: 3.0 INCHES NOMINAL SINGLE END IN
Wrenching Surface Size: 4.75 INCHES NOMINAL SINGLE END IN
Style Designator: OPEN END DOUBLE HEXAGON SOCKET, SOCKET WRENCH
Wrenching Surface Shape: ROUND SINGLE END EXTERNAL
Drive End Shape: 6 POINT SINGLE END INTERNAL
Material: STEEL OVERALL
1 manufacturer part number on file

Identification

NSN: 5120-01-620-7988
NIIN: 016207988
FSC: 5120 — Hand Tools, Nonedged, Nonpowered
FSG: 51 — Hand Tools
Primary part number: S-1-4-31
Manufacturer: Bird-Johnson Propeller Company, Llc

General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-620-7988, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is Bird-Johnson Propeller Company, Llc. Government technical data includes 6 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	5120-01-620-7988
Primary Part Number	S-1-4-31
Item Name	Socket,socket Wrench
FSC / FSG	5120 / 51 — Hand Tools, Nonedged, Nonpowered
Manufacturer	Bird-Johnson Propeller Company, Llc
Status	ACTIVE
Drive Surface Size	3.0 INCHES NOMINAL SINGLE END IN
Wrenching Surface Size	4.75 INCHES NOMINAL SINGLE END IN
Style Designator	OPEN END DOUBLE HEXAGON SOCKET, SOCKET WRENCH
Wrenching Surface Shape	ROUND SINGLE END EXTERNAL
Drive End Shape	6 POINT SINGLE END INTERNAL
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

Part Number	Manufacturer
S-1-4-31 PRIMARY	Bird-Johnson Propeller Company, Llc (USA)

Frequently Asked Questions

What is NSN 5120-01-620-7988?

NSN 5120-01-620-7988 is a Socket,socket Wrench, manufactured by Bird-Johnson Propeller Company, Llc, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.

What part numbers are listed for NSN 5120-01-620-7988?

NSN 5120-01-620-7988 has 1 manufacturer part number on file: S-1-4-31 (Bird-Johnson Propeller Company, Llc).

What are the specifications of S-1-4-31?

Key specifications for S-1-4-31: Drive Surface Size: 3.0 INCHES NOMINAL SINGLE END IN; Wrenching Surface Size: 4.75 INCHES NOMINAL SINGLE END IN; Style Designator: OPEN END DOUBLE HEXAGON SOCKET, SOCKET WRENCH; Overall Length: 45.875 INCHES NOMINAL IN. 6 specifications are documented in the U.S. Government catalog.

Is NSN 5120-01-620-7988 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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