The Drill,twist, cataloged under National Stock Number 5133-01-630-4186, 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 Pro-Lok. Government technical data includes 2 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5133-01-630-4186 |
| Primary Part Number | SB11 |
| Item Name | Drill,twist |
| FSC / FSG | 5133 / 51 — Drill Bits, Counterbores, and Countersinks: Hand and Machine |
| Manufacturer | Pro-Lok |
| Status | ACTIVE |
| Nominal Cutting Diameter | 0.312 INCHES IN |
| Material | TUNGSTEN CARBIDE 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 |
|---|---|
| SB11 PRIMARY | Pro-Lok (USA) |
NSN 5133-01-630-4186 is a Drill,twist, manufactured by Pro-Lok, classified under FSC 5133, Drill Bits, Counterbores, and Countersinks: Hand and Machine. Status: active.
NSN 5133-01-630-4186 has 1 manufacturer part number on file: SB11 (Pro-Lok).
Key specifications for SB11: Overall Length: 5.000 INCHES NOMINAL IN; Nominal Cutting Diameter: 0.312 INCHES IN; Special Features: BUTTER BIT; NEGATIVE RAKE ANGLE TIP; SHORTENED CHISEL EDGE; Part Name Assigned by Controlling Agency: 5/16-INCH SAFE BIT. 2 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.