The Wrench,open End, cataloged under National Stock Number 5120-00-596-4422, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is Telemechanics Inc. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5120-00-596-4422 |
| Primary Part Number | 129537 |
| Item Name | Wrench,open End |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Manufacturer | Telemechanics Inc |
| Status | ACTIVE |
| Large End Head Angle | 15.0 DEGREES NOMINAL |
| Large End Head Thickness | 0.141 INCHES NOMINAL IN |
| Small End Head Thickness | 0.141 INCHES NOMINAL IN |
| Small End Head Angle | 15.0 DEGREES NOMINAL |
| Wrenching Surface Size | 0.562 INCHES NOMINAL FIRST END IN |
| Wrenching Surface Size | 0.750 INCHES NOMINAL SECOND END IN |
| Style Designator | DOUBLE HEAD |
| Wrenching Surface Shape | OVAL BOTH ENDS INTERNAL |
| Material | STEEL 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 |
|---|---|
| 129537 PRIMARY | Telemechanics Inc (USA) |
| Reference | Meaning |
|---|---|
| 129537 | 5/9 Secondary reference American Telephone and Telegraph Co |
| 129537 | 5/9 Secondary reference At and T Corp |
NSN 5120-00-596-4422 is a Wrench,open End, manufactured by Telemechanics Inc, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
NSN 5120-00-596-4422 has 1 manufacturer part number on file: 129537 (Telemechanics Inc).
1 possible match (shared part number, not a government interchangeability claim): 5930-01-399-7242. Verify interchangeability with system specifications before substitution.
Key specifications for 129537: Large End Head Angle: 15.0 DEGREES NOMINAL; Large End Head Thickness: 0.141 INCHES NOMINAL IN; Small End Head Thickness: 0.141 INCHES NOMINAL IN; Small End Head Angle: 15.0 DEGREES NOMINAL. 9 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.