The Drill,twist, cataloged under National Stock Number 5133-01-371-8918, is classified within Federal Supply Class 5133 (Drill Bits, Counterbores, and Countersinks: Hand and Machine) of the Hand Tools group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 5133-01-371-8918 |
| Item Name | Drill,twist |
| FSC / FSG | 5133 / 51 — Drill Bits, Counterbores, and Countersinks: Hand and Machine |
| Status | ACTIVE |
| Shank Diameter | 0.191 INCHES NOMINAL IN |
| Cutting End Style | GENERAL PURPOSE |
| Hardness Rating | 66.0 ROCKWELL C MINIMUM AND 67.5 ROCKWELL C MAXIMUM |
| Flute Length | 1.125 INCHES NOMINAL IN |
| Nominal Cutting Diameter | 0.1910 INCHES IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Cutting Rotation Direction | RIGHT-HAND |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS965 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Shank Style | EXTERNALLY THREADED W/HEX NUT |
| Flute Quantity | 2 |
| Surface Treatment | OXIDE FILM CUTTER |
| Thread Class | 3A A |
| Material | STEEL ALLOY OVERALL |
| Point Angle | 135.0 DEGREES NOMINAL |
| Thread Series Designator | UNF |
| Point Type | SPLIT |
| Thread Quantity | 28 PER INCH |
| 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 |
|---|---|
| 11604 | 5/9 Secondary reference Precision Twist Drill Co |
| NAS965 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5133-01-371-8918 is a Drill,twist, classified under FSC 5133, Drill Bits, Counterbores, and Countersinks: Hand and Machine. Status: active.
6 possible matches (shared part number, not a government interchangeability claim): 4235-01-429-2694, 5895-01-470-0348, 6505-01-508-7251. Verify interchangeability with system specifications before substitution.
Key specifications for 5133-01-371-8918: Shank Diameter: 0.191 INCHES NOMINAL IN; Cutting End Style: GENERAL PURPOSE; Hardness Rating: 66.0 ROCKWELL C MINIMUM AND 67.5 ROCKWELL C MAXIMUM; Flute Length: 1.125 INCHES NOMINAL IN. 18 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.