The Counterbore,machine, cataloged under National Stock Number 5133-01-266-1929, 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 The Boeing Company Div Defense. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5133-01-266-1929 |
| Primary Part Number | SPT21-74D110174-5001TD |
| Item Name | Counterbore,machine |
| FSC / FSG | 5133 / 51 — Drill Bits, Counterbores, and Countersinks: Hand and Machine |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Width Across Flats | 0.375 INCHES NOMINAL IN |
| Cutting End Style | SOLID |
| Nominal Cutting Diameter | 0.6179 INCHES IN |
| Features Provided | INTEGRAL PILOT |
| Pilot Diameter | 0.499 INCHES NOMINAL IN |
| Shank Style | HEXAGON |
| Flute Quantity | 4 |
| 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 |
|---|---|
| SPT21-74D110174-5001TD PRIMARY | The Boeing Company Div Defense (USA) |
| TF02150-1 | Dept of Defence (air Office)tactical Fighter Systems Programoffice (tfspo) (AUS) |
NSN 5133-01-266-1929 is a Counterbore,machine, manufactured by The Boeing Company Div Defense, classified under FSC 5133, Drill Bits, Counterbores, and Countersinks: Hand and Machine. Status: active.
NSN 5133-01-266-1929 has 2 manufacturer part numbers on file: SPT21-74D110174-5001TD (The Boeing Company Div Defense), TF02150-1 (Dept of Defence (air Office)tactical Fighter Systems Programoffice (tfspo)).
Key specifications for SPT21-74D110174-5001TD: Width Across Flats: 0.375 INCHES NOMINAL IN; Cutting End Style: SOLID; Overall Length: 1.800 INCHES NOMINAL IN; Nominal Cutting Diameter: 0.6179 INCHES IN. 8 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.