The Countersink, cataloged under National Stock Number 5133-00-224-9103, 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7 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5133-00-224-9103 |
| Item Name | Countersink |
| FSC / FSG | 5133 / 51 — Drill Bits, Counterbores, and Countersinks: Hand and Machine |
| Status | ACTIVE |
| Body Diameter | 0.625 INCHES NOMINAL IN |
| Cutting End Style | ROSE |
| Hardness Rating | 52.0 ROCKWELL C MINIMUM AND 63.0 ROCKWELL C MAXIMUM |
| Nondefinitive Spec/std Data | 2 TYPE AND B CLASS AND 5/8 SIZE |
| Shank Style | TAPER-SQUARE |
| Included Angle | 81.5 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 TY2CLBSZ5/8 | 5/1 Secondary reference U.S. Government activity |
| GGG-C-613 | 4/1 Identification reference U.S. Government activity |
| 315 5/8 | 5/1 Secondary reference Mayhew Steel Products Inc |
NSN 5133-00-224-9103 is a Countersink, classified under FSC 5133, Drill Bits, Counterbores, and Countersinks: Hand and Machine. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5331-00-263-4587. Verify interchangeability with system specifications before substitution.
Key specifications for 5133-00-224-9103: Body Diameter: 0.625 INCHES NOMINAL IN; Cutting End Style: ROSE; Hardness Rating: 52.0 ROCKWELL C MINIMUM AND 63.0 ROCKWELL C MAXIMUM; Overall Length: 3.000 INCHES MINIMUM AND 4.500 INCHES MAXIMUM 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.