The Tap,thread Cutting, cataloged under National Stock Number 5136-00-434-6033, is classified within Federal Supply Class 5136 (Taps, Dies, and Collets; Hand and Machine) of the Hand Tools group. The manufacturer of record is Greenfield Industries Inc. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5136-00-434-6033 |
| Primary Part Number | 13638 |
| Item Name | Tap,thread Cutting |
| FSC / FSG | 5136 / 51 — Taps, Dies, and Collets; Hand and Machine |
| Manufacturer | Greenfield Industries Inc |
| Status | ACTIVE |
| Shank Diameter | 0.255 INCHES NOMINAL IN |
| Width Across Flats | 0.191 INCHES NOMINAL IN |
| Length | 0.281 INCHES NOMINAL SQUARE END IN |
| Thread Structure | REGULAR |
| Thread Length | 1.000 INCHES NOMINAL IN |
| Style Designator | STRAIGHT FLUTE |
| Thread Pitch Diameters | +0.2185 TO 0.2190 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Flute Quantity | 2 |
| Material | STEEL OVERALL |
| Thread Size and Series/type Designator | 0.250-20 UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 13638 PRIMARY | Greenfield Industries Inc (USA) |
| 5302 1/4-20 UNC | Greenfield Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 5302 1/4-20 UNC | 5/9 Secondary reference Kennametal Inc. Div Kennametal Industrial Products Group |
| 13638 | 5/9 Secondary reference Kennametal Inc. Div Kennametal Industrial Products Group |
NSN 5136-00-434-6033 is a Tap,thread Cutting, manufactured by Greenfield Industries Inc, classified under FSC 5136, Taps, Dies, and Collets; Hand and Machine. Status: active.
NSN 5136-00-434-6033 has 2 manufacturer part numbers on file: 13638 (Greenfield Industries Inc), 5302 1/4-20 UNC (Greenfield Industries Inc).
3 possible matches (shared part number, not a government interchangeability claim): 6685-00-832-5739, 6615-00-943-7701, 5950-01-182-0187. Verify interchangeability with system specifications before substitution.
Key specifications for 13638: Shank Diameter: 0.255 INCHES NOMINAL IN; Width Across Flats: 0.191 INCHES NOMINAL IN; Length: 0.281 INCHES NOMINAL SQUARE END IN; Thread Structure: REGULAR. 13 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.