M.a. Ford 20517190 Carbide Screw Machine Drill Bit 0.1719 in

Product Description

The M.A. FORD 20517190 is a screw machine length drill bit designed for high-precision hole-making in demanding industrial and machining applications. Built from solid carbide, this bit offers superior hardness and wear resistance compared to high-speed steel alternatives. It features a 135-degree split point for fast penetration and reduced walking on entry, paired with a slow spiral flute geometry and web-thinned parallel web for efficient chip evacuation. The straight-cylindrical shank measures 0.1719 inches in diameter, matching the cutting diameter for direct chuck mounting. Machinists and tool and die professionals use this bit in CNC machines, drill presses, and screw machines requiring close-tolerance bores.

This bit is suited for drilling cast iron, non-ferrous metals, stainless steel, and steel. The screw machine length profile -- shorter than jobber length -- provides added rigidity and reduced deflection in short-hole drilling operations. It fits standard chucks and collets that accept a 0.1719-inch straight-cylindrical shank. The 3xD flute-to-diameter ratio and 1-1/16-inch flute length support controlled depth drilling in production environments. It ships individually and is appropriate for both prototype and production-run work where dimensional consistency is critical.

Key Features

• Solid carbide construction for hardness and heat resistance in ferrous and non-ferrous materials
• 135-degree split point reduces entry thrust and minimizes workpiece walking
• Web-thinned parallel web improves chip flow and reduces cutting resistance
• Slow spiral flute geometry suited for cast iron and work-hardening stainless steel
• Screw machine length body provides rigidity and reduces deflection in short-reach applications
• Bright/uncoated finish -- no coating buildup to affect hole tolerance

Compatibility

Designed for use in standard drill chucks and collets accepting a 0.1719-inch straight-cylindrical shank. Primary workpiece materials include cast iron, non-ferrous metal, stainless steel, and steel. Part of the M.A. FORD Series 205 screw machine length carbide drill line.

Installation Notes

Install into a properly sized collet or drill chuck and verify runout before production drilling. Secure the workpiece firmly before engaging the spindle. Always operate within the recommended speed and feed range for the workpiece material and machine type -- consult the M.A. FORD Series 205 speeds and feeds chart for specific parameters. Eye protection and appropriate chip guards are required during operation.