Wrench, Open End5120-01-520-8778

NSN 5120-01-520-8778 · NIIN 015208778 · Part number 0774

Ampco Partners, Ltd. Dba Ampco Safety Tools · FSC 5120 — Hand Tools, Nonedged, Nonpowered · FSG 51 — Hand Tools · CAGE 01DJ4

Government record, cited

NSN 5120-01-520-8778 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-520-8778. Manufacturer of record part number: 0774.

Also searched as 5120-01-520-8778 · 5120015208778 · NIIN 015208778 · 01-520-8778 · FSC 5120 Hand Tools, Nonedged, Nonpowered · CAGE 01DJ4 · 0774

Nearby stock numbers ← 5120-01-520-8777 Socket, Socket Wrench · 5120-01-520-8779 Wrench, Open End →

Features

Wrench,open End — FSC 5120
Large End Head Angle: 15.0 DEGREES NOMINAL
Small End Head Angle: 15.0 DEGREES NOMINAL
Wrenching Surface Size: 0.281 INCHES NOMINAL SECOND END IN
Wrenching Surface Size: 0.250 INCHES NOMINAL FIRST END IN
Style Designator: THIN DOUBLE HEAD
Wrenching Surface Shape: HEXAGON BOTH ENDS INTERNAL
1 manufacturer part number on file

Identification

NSN: 5120-01-520-8778
NIIN: 015208778
FSC: 5120 — Hand Tools, Nonedged, Nonpowered
FSG: 51 — Hand Tools
Primary part number: 0774
Manufacturer: Ampco Partners, Ltd. Dba Ampco Safety Tools

General Description

The Wrench,open End, cataloged under National Stock Number 5120-01-520-8778, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is Ampco Partners, Ltd. Dba Ampco Safety Tools. 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	5120-01-520-8778
Primary Part Number	0774
Item Name	Wrench,open End
FSC / FSG	5120 / 51 — Hand Tools, Nonedged, Nonpowered
Manufacturer	Ampco Partners, Ltd. Dba Ampco Safety Tools
Status	ACTIVE
Large End Head Angle	15.0 DEGREES NOMINAL
Small End Head Angle	15.0 DEGREES NOMINAL
Wrenching Surface Size	0.281 INCHES NOMINAL SECOND END IN
Wrenching Surface Size	0.250 INCHES NOMINAL FIRST END IN
Style Designator	THIN DOUBLE HEAD
Wrenching Surface Shape	HEXAGON BOTH ENDS INTERNAL

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
0774 PRIMARY	Ampco Partners, Ltd. Dba Ampco Safety Tools (USA)

Frequently Asked Questions

What is NSN 5120-01-520-8778?

NSN 5120-01-520-8778 is a Wrench,open End, manufactured by Ampco Partners, Ltd. Dba Ampco Safety Tools, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.

What part numbers are listed for NSN 5120-01-520-8778?

NSN 5120-01-520-8778 has 1 manufacturer part number on file: 0774 (Ampco Partners, Ltd. Dba Ampco Safety Tools).

What are the specifications of 0774?

Key specifications for 0774: Large End Head Angle: 15.0 DEGREES NOMINAL; Small End Head Angle: 15.0 DEGREES NOMINAL; Wrenching Surface Size: 0.281 INCHES NOMINAL SECOND END IN; Wrenching Surface Size: 0.250 INCHES NOMINAL FIRST END IN. 6 specifications are documented in the U.S. Government catalog.

Is NSN 5120-01-520-8778 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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