The Counterbore,machine, cataloged under National Stock Number 5133-01-133-4576, is classified within Federal Supply Class 5133 (Drill Bits, Counterbores, and Countersinks: Hand and Machine) of the Hand Tools group. The manufacturer of record is Rolls-Royce Corporation. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5133-01-133-4576 |
| Primary Part Number | 23003606 |
| Item Name | Counterbore,machine |
| FSC / FSG | 5133 / 51 — Drill Bits, Counterbores, and Countersinks: Hand and Machine |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.6672 INCHES NOMINAL IN |
| Cutting End Style | SOLID |
| Features Provided | REPLACEABLE PILOT |
| Pilot Diameter | 0.288 INCHES MINIMUM AND 0.289 INCHES MAXIMUM IN |
| Shank Style | STRAIGHT ROUND |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 23003606 PRIMARY | Rolls-Royce Corporation (USA) |
| Reference | Meaning |
|---|---|
| 23003606 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
NSN 5133-01-133-4576 is a Counterbore,machine, manufactured by Rolls-Royce Corporation, classified under FSC 5133, Drill Bits, Counterbores, and Countersinks: Hand and Machine. Status: active.
NSN 5133-01-133-4576 has 1 manufacturer part number on file: 23003606 (Rolls-Royce Corporation).
Key specifications for 23003606: Shank Diameter: 0.6672 INCHES NOMINAL IN; Cutting End Style: SOLID; Features Provided: REPLACEABLE PILOT; Pilot Diameter: 0.288 INCHES MINIMUM AND 0.289 INCHES MAXIMUM IN. 6 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.