The Drill,twist, cataloged under National Stock Number 5133-01-399-1189, 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 Greenfield Industries Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5133-01-399-1189 |
| Primary Part Number | 3780 27/64 |
| Item Name | Drill,twist |
| FSC / FSG | 5133 / 51 — Drill Bits, Counterbores, and Countersinks: Hand and Machine |
| Manufacturer | Greenfield Industries Inc |
| Status | ACTIVE |
| Shank Diameter | 0.421 INCHES NOMINAL IN |
| Cutting End Style | GENERAL PURPOSE |
| Flute Length | 2.000 INCHES NOMINAL IN |
| Nominal Cutting Diameter | 0.4219 INCHES IN |
| Cutting Rotation Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS907 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Nondefinitive Spec/std Data | D TYPE |
| Shank Style | STRAIGHT ROUND |
| Flute Quantity | 2 |
| Material | STEEL ALLOY OVERALL |
| Point Angle | 135.0 DEGREES NOMINAL |
| Point Type | SPLIT |
| 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 |
|---|---|
| 3780 27/64 | Greenfield Industries Inc (USA) |
| C15989 | Greenfield Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| NAS907 | 3/1 Design control — primary reference U.S. Government activity |
| 15989 | 5/9 Secondary reference Cleveland Twist Drill Co Div of Greenfield Industries Inc |
| 15989 | 5/9 Secondary reference Kennametal Inc. Div Kennametal Industrial Products Group |
| 3780 27/64 | 5/9 Secondary reference Cleveland Twist Drill Co Div of Greenfield Industries Inc |
| NAS907 TYD | 5/1 Secondary reference U.S. Government activity |
| 3780 27/64 | 5/9 Secondary reference Kennametal Inc. Div Kennametal Industrial Products Group |
NSN 5133-01-399-1189 is a Drill,twist, manufactured by Greenfield Industries Inc, classified under FSC 5133, Drill Bits, Counterbores, and Countersinks: Hand and Machine. Status: active.
NSN 5133-01-399-1189 has 2 manufacturer part numbers on file: 3780 27/64 (Greenfield Industries Inc), C15989 (Greenfield Industries Inc).
3 possible matches (shared part number, not a government interchangeability claim): 6505-01-583-4185, 5365-01-588-1798, 8145-01-627-5634. Verify interchangeability with system specifications before substitution.
Key specifications for 3780 27/64: Shank Diameter: 0.421 INCHES NOMINAL IN; Cutting End Style: GENERAL PURPOSE; Flute Length: 2.000 INCHES NOMINAL IN; Overall Length: 5.375 INCHES NOMINAL IN. 12 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.