Sgs 51206 Jobber Drill Bit Letter F 0.257 Solid Carbide

Product Description

The SGS 51206 is a jobber-length drill bit sized to Letter F (0.257 inches diameter), designed for precision drilling in metalworking, machining, and fabrication applications. Built from micrograin solid carbide, it delivers the hardness and edge retention needed for drilling ferrous and non-ferrous metals, cast iron, and hard plastics. The 118-degree four-facet point provides self-centering entry and reduced thrust compared to a standard chisel point. A bright, uncoated finish keeps the bit versatile across general-purpose drilling operations. With a regular spiral flute and web-thinned design, chip evacuation stays consistent through the cut.

This bit suits general-purpose drilling in machine shops, tool rooms, and fabrication environments. The straight cylindrical shank seats in standard drill chucks on CNC machining centers, manual mills, and drill presses. Right-hand cutting direction and a 2-inch flute length make it practical for through-holes and blind holes in medium-thickness stock. The 5xD flute-to-diameter ratio supports controlled chip flow in typical production setups. It is sold individually and fits workflows where a single replacement bit is needed without ordering in bulk.

Key Features

• Micrograin solid carbide construction for hardness and wear resistance in metalworking applications
• 118-degree four-facet point with web thinning for self-centering entry and reduced drilling thrust
• Regular spiral flute with 2-inch flute length for consistent chip evacuation
• Bright, uncoated finish suitable for general-purpose drilling across a range of materials
• Straight cylindrical shank compatible with standard drill chucks
• Conforms to DIN 338 standard for jobber-length drill geometry

Compatibility

Designed as a general-purpose jobber-length drill bit for use in standard drill chucks on CNC machining centers, manual mills, and drill presses that accept straight cylindrical shanks. Diameter tolerance of +0.0000 to -0.0005 inches suits close-tolerance drilling applications.

Installation Notes

Secure the straight shank fully in the drill chuck and verify runout before beginning drilling operations. Solid carbide bits are brittle compared to high-speed steel — avoid side loading, interrupted cuts at high feed rates, or using the bit as a reamer. Ensure the workpiece is properly fixtured to prevent movement during the cut. Follow shop safety procedures and applicable OSHA standards for machine guarding when operating drill presses or machining centers.