M.a. Ford 20653120 Carbide Screw Machine Drill Bit 17/32

Product Description

The M.A. FORD 20653120 is a solid carbide screw machine length drill bit designed for high-precision hole-making in demanding materials. With a 17/32 inch (0.5313 inch) diameter and a 118-degree faceted point angle, this bit delivers controlled entry and accurate sizing in cast iron, stainless steel, steel, and non-ferrous metals. The short flute design and 3.5 inch overall length make it well-suited to screw machine and CNC drilling operations where rigidity and repeatability are priorities. Web thinning reduces thrust force at the point, easing penetration in harder materials. Machinists, tool-and-die shops, and production drilling operations are the primary users of this style of bit.

This drill bit is built for short-hole production drilling applications in machine shops, manufacturing facilities, and fabrication environments. The screw machine length profile keeps the bit compact and stiff, reducing deflection during high-feed drilling cycles. Its straight cylindrical shank fits standard drill chucks and collet holders without modification. The 3xD flute-to-diameter ratio keeps chip evacuation efficient in the short flute length. Applications include drilling pilot holes, through-holes, and precision bores in ferrous and non-ferrous workpieces where dimensional accuracy and tool life are critical.

Key Features

• Solid carbide construction for extended tool life in hard and abrasive materials
• 118-degree faceted point angle with web thinning for reduced thrust and clean entry
• 17/32 inch diameter with a tight tolerance of +0.0000 to -0.0005 inches
• Screw machine (short) length — 3.5 inch overall — for maximum rigidity in production setups
• Straight cylindrical shank fits standard chucks and collet toolholders
• Bright/uncoated finish compatible with a wide range of cutting fluids and workpiece materials
• Right-hand cut, regular spiral, two-flute design for balanced chip load

Compatibility

Designed for use in cast iron, non-ferrous metals, stainless steel, and steel workpieces. The straight cylindrical shank is compatible with standard drill chucks and ER-style collet holders accepting a 0.5313 inch shank diameter. Part of M.A. FORD Series 206.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tooling technicians familiar with speeds, feeds, and fixturing for solid carbide cutting tools. Secure the shank fully in the chuck or collet before operation and verify runout before beginning a production run. Solid carbide tooling is brittle — avoid side loading, interrupted cuts without appropriate parameters, or re-chucking a visibly chipped tool. Follow the machine tool manufacturer guidelines and applicable shop safety procedures when setting cutting parameters.