The Countersink, cataloged under National Stock Number 5133-01-080-1898, 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7 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5133-01-080-1898 |
| Item Name | Countersink |
| FSC / FSG | 5133 / 51 — Drill Bits, Counterbores, and Countersinks: Hand and Machine |
| Status | ACTIVE |
| Body Diameter | 0.375 INCHES NOMINAL IN |
| Point Diameter | 0.375 INCHES NOMINAL IN |
| Cutting End Style | SPIRAL FLUTE BLUNT END |
| Cutting Rotation Direction | RIGHT-HAND |
| Flute Quantity | 6 |
| 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 |
|---|---|
| CK-1/2-W-60 | 3/9 Design control — primary reference Severance Tool Industries Inc. |
NSN 5133-01-080-1898 is a Countersink, classified under FSC 5133, Drill Bits, Counterbores, and Countersinks: Hand and Machine. Status: active.
Key specifications for 5133-01-080-1898: Body Diameter: 0.375 INCHES NOMINAL IN; Point Diameter: 0.375 INCHES NOMINAL IN; Cutting End Style: SPIRAL FLUTE BLUNT END; Overall Length: 2.000 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.