M.a. Ford 20627700 Screw Machine Drill Bit 0.277in Carbide

Product Description

The M.A. FORD 20627700 is a screw machine length (stub length) drill bit engineered for high-performance drilling in demanding shop and production environments. Built from solid carbide, it delivers the rigidity and wear resistance needed when working through cast iron, stainless steel, non-ferrous metals, and carbon steel. The bit measures 0.277 inches in diameter with a 118-degree faceted point and a web-thinned tip that reduces thrust at entry and improves centering. Overall length is 2.5 inches with a 1-inch flute length, making it well-suited for CNC machining centers, turret lathes, and screw machines where a short, stiff tool is required to control deflection.

This Series 206 drill bit is designed for short-hole drilling applications in ferrous and non-ferrous production work. The stub-length body limits overhang, which reduces vibration and improves hole accuracy in tight setups. It covers a drill bit size range of 0.2500 to 0.3000 inches decimal and corresponds to letter size J. The straight cylindrical shank at 0.277 inches diameter fits standard drill chucks and collet holders without modification, making it a straightforward drop-in for most production tooling setups.

Key Features

• Solid carbide construction for extended tool life in hard and abrasive workpiece materials
• 118-degree faceted point with web thinning for reduced entry thrust and improved self-centering
• Screw machine (stub) length at 2.5 inches overall limits deflection in short-reach drilling applications
• Regular spiral flute geometry with a 3xD flute-to-diameter ratio supports chip evacuation in through-hole and blind-hole work
• Bright/uncoated finish suitable for use across cast iron, stainless steel, non-ferrous metals, and steel
• Diameter tolerance of +0.0000 to -0.0005 inches ensures consistent, on-size holes

Compatibility

Designed as a production-grade replacement or first-fit drill bit for applications requiring a 0.277-inch (letter J) stub-length carbide drill. Compatible with standard straight-shank drill chucks and collet holders rated for 0.277-inch shanks on CNC machining centers, manual lathes, and screw machines.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle fully stopped and the machine in a safe, locked-out state. Ensure the collet or chuck is clean and the shank is fully seated before clamping. Solid carbide tooling is brittle — avoid side-loading or using this bit as a reamer. Verify spindle speed and feed rate against workpiece material requirements before initiating a cut.