The Tap,thread Cutting, cataloged under National Stock Number 5136-01-664-4271, is classified within Federal Supply Class 5136 (Taps, Dies, and Collets; Hand and Machine) of the Hand Tools group. The manufacturer of record is Tapco. 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 | 5136-01-664-4271 |
| Primary Part Number | 54838 |
| Item Name | Tap,thread Cutting |
| FSC / FSG | 5136 / 51 — Taps, Dies, and Collets; Hand and Machine |
| Manufacturer | Tapco |
| Status | ACTIVE |
| Shank Diameter | 0.59 INCHES NOMINAL IN |
| Thread Structure | INTERRUPTED |
| Thread Length | 1.25 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Thread Size and Series/type Designator | 3/4-10 UNIFIED NATIONAL COARSE (UNC) |
| Starting Chamfer Type | TAPER |
| 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 |
|---|---|
| 11B5090651-79 | Devcom Chemical Biological Center Dba Chemical Biological Center Div U.s. Dept of Army (USA) |
| 54838 PRIMARY | Tapco (USA) |
NSN 5136-01-664-4271 is a Tap,thread Cutting, manufactured by Tapco, classified under FSC 5136, Taps, Dies, and Collets; Hand and Machine. Status: active.
NSN 5136-01-664-4271 has 2 manufacturer part numbers on file: 11B5090651-79 (Devcom Chemical Biological Center Dba Chemical Biological Center Div U.s. Dept of Army), 54838 (Tapco).
Key specifications for 54838: Shank Diameter: 0.59 INCHES NOMINAL IN; Thread Structure: INTERRUPTED; Thread Length: 1.25 INCHES NOMINAL IN; Overall Length: 4.625 INCHES MAXIMUM 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.