The Countersink, cataloged under National Stock Number 5133-00-596-9577, is classified within Federal Supply Class 5133 (Drill Bits, Counterbores, and Countersinks: Hand and Machine) of the Hand Tools group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5133-00-596-9577 |
| 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 | 0.127 INCHES NOMINAL IN |
| Cutting End Style | STRAIGHT FLUTE W/THROUGH HOLE |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM |
| Cutting Rotation Direction | RIGHT-HAND |
| Features Provided | REPLACEABLE PILOT |
| Departure From Cited Designator | AS MODIFIED BY FLUTE QUANITY |
| Pilot Diameter | 0.126 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | 1 TYPE AND B CLASS AND 2 SIZE AND F-15 NUMBER |
| Pilot Hole Nominal Diameter | 0.127 INCHES IN |
| Flute Quantity | 3 |
| Included Angle | 100.0 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 TY1CLBSZ2NRF-15 | 5/1 Secondary reference U.S. Government activity |
| GGG-C-613 | 4/1 Identification reference U.S. Government activity |
NSN 5133-00-596-9577 is a Countersink, classified under FSC 5133, Drill Bits, Counterbores, and Countersinks: Hand and Machine. Status: active.
Key specifications for 5133-00-596-9577: Body Diameter: 0.375 INCHES NOMINAL IN; Point Diameter: 0.127 INCHES NOMINAL IN; Cutting End Style: STRAIGHT FLUTE W/THROUGH HOLE; Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM. 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.