Sgs 51207 Carbide Jobber Drill Bit Letter G 0.261 in

Product Description

The SGS 51207 is a solid carbide jobber length drill bit sized at Letter G, equivalent to 0.261 inches (6.63 mm) in diameter. It features a 118-degree four-facet point with web thinning for improved centering and reduced thrust. The micrograin solid carbide construction delivers hardness and heat resistance suited for drilling steel, cast iron, stainless, and other ferrous and non-ferrous materials. The bright, uncoated finish allows for direct inspection of the cutting edge. With a regular right-hand spiral flute and straight cylindrical shank, the 51207 fits standard drill chucks and CNC toolholders. It is manufactured to DIN 338 standards and carries a Series 101 designation for general-purpose drilling applications.

This drill bit is intended for use in machine shop, maintenance, and fabrication environments where tight tolerances and consistent performance are required. The two-flute spiral design provides efficient chip evacuation during through-hole and blind-hole operations. It is appropriate for use in drill presses, CNC machining centers, and hand-held power drills where a 0.261-inch diameter hole is called for. The 3.5-inch overall length and 2.125-inch flute length accommodate standard jobber-depth applications without excessive overhang.

Key Features

• Solid micrograin carbide construction for extended tool life in hard materials
• 118-degree four-facet point with web thinning for accurate self-starting entry
• Right-hand cut with regular spiral flutes for efficient chip removal
• Bright, uncoated finish for easy edge inspection and compatibility with a range of cutting fluids
• Straight cylindrical shank fits standard drill chucks and collets
• Manufactured to DIN 338 for consistent dimensional accuracy

Compatibility

Designed as a general-purpose jobber length drill bit compatible with standard drill chucks and collets accepting a 0.261-inch straight cylindrical shank, suitable for drill presses, CNC machining centers, and variable-speed hand drills.

Installation Notes

Installation and use should be performed by machinists or qualified tradespeople familiar with cutting tool safety. Secure the shank fully in the chuck or collet before operation and verify runout before drilling at speed. Coolant-through is not supported on this bit, so apply cutting fluid externally when drilling ferrous materials to manage heat. Inspect the cutting edges for chipping or wear before each use, as carbide is brittle and sensitive to side-loading or impact.