The Wrench,open End, cataloged under National Stock Number 5120-01-052-3577, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5120-01-052-3577 |
| Primary Part Number | B-171-166-1 |
| Item Name | Wrench,open End |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Manufacturer | Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric |
| Status | ACTIVE |
| Wrenching Surface Size | 1.383 INCHES MINIMUM AND 1.394 INCHES MAXIMUM FIRST END IN |
| Wrenching Surface Size | 2.011 INCHES MINIMUM AND 2.025 INCHES MAXIMUM SECOND END IN |
| Style Designator | DOUBLE HEAD |
| Wrenching Surface Shape | OVAL BOTH ENDS INTERNAL |
| Surface Treatment | OXIDE OVERALL |
| Material | STEEL COMP 4140 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| B-171-166-1 PRIMARY | Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric (USA) |
| 01-052-3577 PRIMARY | General Services Administration Federal Supply Service Tool & Appliances Commodity Center (USA) |
NSN 5120-01-052-3577 is a Wrench,open End, manufactured by Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
NSN 5120-01-052-3577 has 2 manufacturer part numbers on file: B-171-166-1 (Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric), 01-052-3577 (General Services Administration Federal Supply Service Tool & Appliances Commodity Center).
Key specifications for B-171-166-1: Wrenching Surface Size: 1.383 INCHES MINIMUM AND 1.394 INCHES MAXIMUM FIRST END IN; Wrenching Surface Size: 2.011 INCHES MINIMUM AND 2.025 INCHES MAXIMUM SECOND END IN; Style Designator: DOUBLE HEAD; Overall Length: 10.000 INCHES NOMINAL IN. 6 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.