The Tap,thread Cutting, cataloged under National Stock Number 5136-01-038-2907, is classified within Federal Supply Class 5136 (Taps, Dies, and Collets; Hand and Machine) of the Hand Tools group. The manufacturer of record is Stanley Engineered Fastening Llc. Government technical data includes 15 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5136-01-038-2907 |
| Primary Part Number | 4FPB |
| Item Name | Tap,thread Cutting |
| FSC / FSG | 5136 / 51 — Taps, Dies, and Collets; Hand and Machine |
| Manufacturer | Stanley Engineered Fastening Llc |
| Status | ACTIVE |
| Shank Diameter | 0.3165 INCHES MINIMUM AND 0.3180 INCHES MAXIMUM IN |
| Width Across Flats | 0.234 INCHES MINIMUM AND 0.238 INCHES MAXIMUM IN |
| Length | 0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM SQUARE END IN |
| Thread Structure | REGULAR |
| Thread Length | 1.062 INCHES MINIMUM AND 1.188 INCHES MAXIMUM IN |
| Style Designator | STRAIGHT FLUTE |
| Thread Pitch Diameters | +0.2268 TO 0.2300 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 0U583-SAE AS59158 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Nondefinitive Spec/std Data | 1 TYPE AND 1 CLASS |
| Flute Quantity | 3 |
| Material | STEEL OVERALL |
| Thread Size and Series/type Designator | 0.250-28 STI |
| Starting Chamfer Type | PLUG |
| 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 |
|---|---|
| 4FPB | Stanley Engineered Fastening Llc (USA) |
| Reference | Meaning |
|---|---|
| AS59158 | 5/9 Secondary reference U.S. Government activity |
| A-A-59158 | 5/9 Secondary reference Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| A-A-59158 TY1CL1 | 5/9 Secondary reference U.S. Government activity |
| AS59158 TY1CL1 | 5/1 Secondary reference U.S. Government activity |
| AS59158 | 3/1 Design control — primary reference Sae International Dba Sae International |
NSN 5136-01-038-2907 is a Tap,thread Cutting, manufactured by Stanley Engineered Fastening Llc, classified under FSC 5136, Taps, Dies, and Collets; Hand and Machine. Status: active.
NSN 5136-01-038-2907 has 1 manufacturer part number on file: 4FPB (Stanley Engineered Fastening Llc).
Key specifications for 4FPB: Shank Diameter: 0.3165 INCHES MINIMUM AND 0.3180 INCHES MAXIMUM IN; Width Across Flats: 0.234 INCHES MINIMUM AND 0.238 INCHES MAXIMUM IN; Length: 0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM SQUARE END IN; Thread Structure: REGULAR. 15 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.