The Countersink, cataloged under National Stock Number 5133-01-629-9281, is classified within Federal Supply Class 5133 (Drill Bits, Counterbores, and Countersinks: Hand and Machine) of the Hand Tools group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5133-01-629-9281 |
| Item Name | Countersink |
| FSC / FSG | 5133 / 51 — Drill Bits, Counterbores, and Countersinks: Hand and Machine |
| Status | ACTIVE |
| Body Diameter | 0.250 INCHES NOMINAL IN |
| Cutting End Style | PLAIN DOUBLE END |
| Drill Diameter | 0.109 INCHES NOMINAL IN |
| Drill Length | 0.109 INCHES NOMINAL IN |
| Specification/standard Data | 05047-ASME B94.11M PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Included Angle | 60.0 DEGREES NOMINAL |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 10300 | 5/2 Secondary reference U.S. Government activity |
| 10300-TIN | 3/2 Design control — primary reference U.S. Government activity |
| 11B5090303 | D/9 Drawing number reference only Devcom Chemical Biological Center Dba Chemical Biological Center Div U.s. Dept of Army |
| B94.11M | 3/1 Design control — primary reference The American Society of Mechanical Engineers |
NSN 5133-01-629-9281 is a Countersink, classified under FSC 5133, Drill Bits, Counterbores, and Countersinks: Hand and Machine. Status: active.
Key specifications for 5133-01-629-9281: Body Diameter: 0.250 INCHES NOMINAL IN; Cutting End Style: PLAIN DOUBLE END; Drill Diameter: 0.109 INCHES NOMINAL IN; Overall Length: 2.00 INCHES NOMINAL IN. 7 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.