The Tap,thread Cutting, cataloged under National Stock Number 5136-01-351-5380, is classified within Federal Supply Class 5136 (Taps, Dies, and Collets; Hand and Machine) of the Hand Tools group. The manufacturer of record is New York Twist Drill Inc. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5136-01-351-5380 |
| Primary Part Number | 8-56GH2 |
| Item Name | Tap,thread Cutting |
| FSC / FSG | 5136 / 51 — Taps, Dies, and Collets; Hand and Machine |
| Manufacturer | New York Twist Drill Inc |
| Status | ACTIVE |
| Thread Direction | RIGHT-HAND |
| Flute Quantity | 4 |
| Thread Size and Series/type Designator | 0.164-56 UNF |
| Starting Chamfer Type | BOTTOMING |
| Thread Forming Method | GROUND |
| 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 |
|---|---|
| 8-56GH2 PRIMARY | New York Twist Drill Inc (USA) |
| Reference | Meaning |
|---|---|
| 207539-001 | 7/9 Vendor item drawing reference U.S. Government activity |
| GH2-31HTV66440-1534 | 5/9 Secondary reference New York Twist Drill Inc |
NSN 5136-01-351-5380 is a Tap,thread Cutting, manufactured by New York Twist Drill Inc, classified under FSC 5136, Taps, Dies, and Collets; Hand and Machine. Status: active.
NSN 5136-01-351-5380 has 1 manufacturer part number on file: 8-56GH2 (New York Twist Drill Inc).
Key specifications for 8-56GH2: Thread Direction: RIGHT-HAND; Flute Quantity: 4; Thread Size and Series/type Designator: 0.164-56 UNF; Starting Chamfer Type: BOTTOMING. 5 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.