The Drill,twist, cataloged under National Stock Number 5133-01-460-0286, 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 9 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5133-01-460-0286 |
| Primary Part Number | 48531 |
| Item Name | Drill,twist |
| FSC / FSG | 5133 / 51 — Drill Bits, Counterbores, and Countersinks: Hand and Machine |
| Manufacturer | Greenfield Industries Inc |
| Status | ACTIVE |
| Cutting End Style | GENERAL PURPOSE |
| Flute Length | 2.188 INCHES NOMINAL IN |
| Nominal Cutting Diameter | 0.4844 INCHES IN |
| Cutting Rotation Direction | RIGHT-HAND |
| Shank Style | STRAIGHT ROUND |
| Flute Quantity | 2 |
| Material | STEEL OVERALL |
| Point Angle | 118.0 DEGREES NOMINAL |
| Point Type | CONVENTIONAL |
| 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 |
|---|---|
| 157 31/64 | Greenfield Industries Inc (USA) |
| R40 31/64 | Precision Twist Drill Co (USA) |
| 48531 PRIMARY | Greenfield Industries Inc (USA) |
| 40031 PRIMARY | Precision Twist Drill Co (USA) |
| Reference | Meaning |
|---|---|
| 157 31/64 | 5/9 Secondary reference Kennametal Inc. Div Kennametal Industrial Products Group |
| 48531 | 5/9 Secondary reference Kennametal Inc. Div Kennametal Industrial Products Group |
| 2120 31/64 | 5/9 Secondary reference Cleveland Twist Drill Co Div of Greenfield Industries Inc |
| 2120 31/64 | 5/9 Secondary reference Kennametal Inc. Div Kennametal Industrial Products Group |
| 157 31/64 | 5/9 Secondary reference Greenfield Industries Inc |
| 48531 | 5/9 Secondary reference Greenfield Industries Inc |
NSN 5133-01-460-0286 is a Drill,twist, manufactured by Greenfield Industries Inc, classified under FSC 5133, Drill Bits, Counterbores, and Countersinks: Hand and Machine. Status: active.
NSN 5133-01-460-0286 has 4 manufacturer part numbers on file: 157 31/64 (Greenfield Industries Inc), R40 31/64 (Precision Twist Drill Co), 48531 (Greenfield Industries Inc), 40031 (Precision Twist Drill Co).
Key specifications for 48531: Cutting End Style: GENERAL PURPOSE; Flute Length: 2.188 INCHES NOMINAL IN; Overall Length: 3.688 INCHES NOMINAL IN; Nominal Cutting Diameter: 0.4844 INCHES IN. 9 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.