Sgs 51012 Solid Carbide Jobber Drill Bit No. 12 0.189 in

Product Description

The SGS 51012 is a solid carbide jobber-length drill bit sized to wire gauge No. 12 (0.189 inches / 4.80 mm) with a 118-degree faceted point angle. Built from micrograin solid carbide with a bright uncoated finish, this bit delivers the rigidity and wear resistance required for precision drilling in ferrous and non-ferrous metals, composites, and hard plastics. The two-flute regular spiral geometry promotes efficient chip evacuation while the web-thinned, tapered web reduces thrust during entry. It conforms to DIN 338 standards and is suited for use in CNC machining centers, drill presses, and handheld power tools where dimensional accuracy and hole-to-hole repeatability are critical.

The SGS 51012 is designed for production and maintenance drilling applications across metalworking, fabrication, and general machining environments. Its straight cylindrical shank seats securely in standard keyless or keyed drill chucks without requiring special toolholders. The 2.75-inch overall length fits within typical work-holding setups for sheet metal, structural steel, aluminum extrusions, and similar workpiece materials. Professional machinists, tool-and-die technicians, and maintenance mechanics are the primary users of this bit in both shop and field settings.

Key Features

• Micrograin solid carbide construction for extended tool life in hard and abrasive materials
• 118-degree faceted point angle with web thinning reduces entry thrust and improves self-centering
• Regular spiral flute with 5xD flute-to-diameter ratio supports efficient chip removal
• Bright uncoated finish compatible with a wide range of cutting fluids and dry-cutting applications
• Right-hand cut, straight cylindrical shank fits standard drill chucks without adapters
• Conforms to DIN 338 - consistent with internationally recognized jobber-length geometry standards

Compatibility

Designed as an OEM-style replacement or direct-fit jobber-length drill bit for any standard drill chuck accepting a 0.189-inch straight cylindrical shank, compatible with CNC machining centers, drill presses, and portable power drills commonly used in metalworking and fabrication trades.

Installation Notes

Installation of this drill bit is performed by machinists or maintenance technicians following standard toolchanging procedures for the host machine. Secure the straight shank fully into the chuck and verify runout before beginning a drilling cycle. Always power down and de-energize the machine spindle before changing tooling. Use appropriate cutting fluid or coolant for the workpiece material to maximize tool life, as this bit does not feature through-coolant capability.