The Countersink, cataloged under National Stock Number 5133-00-288-9995, is classified within Federal Supply Class 5133 (Drill Bits, Counterbores, and Countersinks: Hand and Machine) of the Hand Tools group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5133-00-288-9995 |
| Item Name | Countersink |
| FSC / FSG | 5133 / 51 — Drill Bits, Counterbores, and Countersinks: Hand and Machine |
| Status | ACTIVE |
| Body Diameter | 0.906 INCHES NOMINAL IN |
| Shank Small End Square Width | 0.156 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Cutting End Style | STEPPED BODY |
| Shank Large End Square Width | 0.312 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM |
| Cutting Rotation Direction | RIGHT-HAND |
| Nondefinitive Spec/std Data | 2 TYPE AND D CLASS AND 29/32 SIZE |
| Shank Style | TAPER-SQUARE |
| Flute Quantity | 3 |
| Included Angle | 82.0 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 |
|---|---|
| GGG-C-613 | 4/1 Identification reference U.S. Government activity |
| GGG-C-613 TY2CLDSZ29/32 | 5/1 Secondary reference U.S. Government activity |
NSN 5133-00-288-9995 is a Countersink, classified under FSC 5133, Drill Bits, Counterbores, and Countersinks: Hand and Machine. Status: active.
Key specifications for 5133-00-288-9995: Body Diameter: 0.906 INCHES NOMINAL IN; Shank Small End Square Width: 0.156 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Cutting End Style: STEPPED BODY; Shank Large End Square Width: 0.312 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN. 11 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.