The Chasers,thread Cutting, cataloged under National Stock Number 5136-00-156-2990, is classified within Federal Supply Class 5136 (Taps, Dies, and Collets; Hand and Machine) of the Hand Tools group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 5136-00-156-2990 |
| Item Name | Chasers,thread Cutting |
| FSC / FSG | 5136 / 51 — Taps, Dies, and Collets; Hand and Machine |
| Status | ACTIVE |
| Style Designator | RADIAL |
| Thread Pitch Diameters | +0.2788 TO 0.2843 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Segment Quantity | 4 |
| Material | STEEL OVERALL |
| Thread Size and Series/type Designator | 0.312-24 UNF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 51149 | 3/9 Design control — primary reference Trw Inc Trw Cutting Tools Div-New Haven |
| MIL-D-4562 | 5/9 Secondary reference U.S. Government activity |
| A-A-50695 | 4/1 Identification reference Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
NSN 5136-00-156-2990 is a Chasers,thread Cutting, classified under FSC 5136, Taps, Dies, and Collets; Hand and Machine. Status: active.
5 possible matches (shared part number, not a government interchangeability claim): 5340-00-286-4156, 3990-00-475-1068, 2940-00-699-9760. Verify interchangeability with system specifications before substitution.
Key specifications for 5136-00-156-2990: Style Designator: RADIAL; Thread Pitch Diameters: +0.2788 TO 0.2843 INCHES IN; Thread Direction: RIGHT-HAND; Special Features: FOR USE W/GEOMETRIC TOOL CO. DIE HEAD HOLDER STYLE D,SIZE 9/16 IN. 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.