The Tap,thread Cutting, cataloged under National Stock Number 5136-01-431-5983, is classified within Federal Supply Class 5136 (Taps, Dies, and Collets; Hand and Machine) of the Hand Tools group. The manufacturer of record is Irwin Industrial Tool Company. Government technical data includes 7 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.
| Parameter | Value |
|---|---|
| NSN | 5136-01-431-5983 |
| Primary Part Number | 1764 |
| Item Name | Tap,thread Cutting |
| FSC / FSG | 5136 / 51 — Taps, Dies, and Collets; Hand and Machine |
| Manufacturer | Irwin Industrial Tool Company |
| Status | ACTIVE |
| Thread Structure | REGULAR |
| Thread Pitch in Millimeters | 2.50 |
| Style Designator | STRAIGHT FLUTE |
| Thread Direction | RIGHT-HAND |
| Material | STEEL OVERALL |
| Thread Size and Series/type Designator | 20.0 MM ISO M MM |
| Starting Chamfer Type | PLUG |
| 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 |
|---|---|
| 1764 PRIMARY | Irwin Industrial Tool Company (USA) |
NSN 5136-01-431-5983 is a Tap,thread Cutting, manufactured by Irwin Industrial Tool Company, classified under FSC 5136, Taps, Dies, and Collets; Hand and Machine. Status: active.
NSN 5136-01-431-5983 has 1 manufacturer part number on file: 1764 (Irwin Industrial Tool Company).
Key specifications for 1764: Thread Structure: REGULAR; Thread Pitch in Millimeters: 2.50; Style Designator: STRAIGHT FLUTE; Thread Direction: RIGHT-HAND. 7 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.