The Tap,thread Cutting, cataloged under National Stock Number 5136-00-255-0528, is classified within Federal Supply Class 5136 (Taps, Dies, and Collets; Hand and Machine) of the Hand Tools group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5136-00-255-0528 |
| Primary Part Number | WU11177 |
| Item Name | Tap,thread Cutting |
| FSC / FSG | 5136 / 51 — Taps, Dies, and Collets; Hand and Machine |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Width Across Flats | 0.229 INCHES NOMINAL IN |
| Thread Structure | REGULAR |
| Thread Length | 1.250 INCHES NOMINAL IN |
| Style Designator | STRAIGHT FLUTE |
| Thread Pitch Diameters | +0.3759 TO 0.3769 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Departure From Cited Designator | AS MOD BY W ACROSS FLATS,THD SIZE AND SERIES,AND THD PITCH DIA |
| Nondefinitive Spec/std Data | 1 TYPE AND C SERIES AND C STYLE |
| Flute Quantity | 4 |
| Material | STEEL OVERALL |
| Thread Size and Series/type Designator | 0.406-20 UNS |
| 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 |
|---|---|
| WU11177 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| GGG-T-0070 TY1SECSTC | 5/1 Secondary reference U.S. Government activity |
| GGG-T-0070 | 4/1 Identification reference U.S. Government activity |
NSN 5136-00-255-0528 is a Tap,thread Cutting, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5136, Taps, Dies, and Collets; Hand and Machine. Status: active.
NSN 5136-00-255-0528 has 1 manufacturer part number on file: WU11177 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 5136-00-889-7005. Verify interchangeability with system specifications before substitution.
Key specifications for WU11177: Width Across Flats: 0.229 INCHES NOMINAL IN; Thread Structure: REGULAR; Thread Length: 1.250 INCHES NOMINAL IN; Style Designator: STRAIGHT FLUTE. 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.