M.a. Ford. 20613600 Screw Machine Drill Bit 0.136 in

Product Description

The M.A. FORD. 20613600 is a solid carbide screw machine length drill bit designed for short-reach, high-precision drilling in demanding industrial and trade applications. Built to Series 206 standards, it measures 0.136 inches (No. 29 wire gauge) in diameter with an overall length of 2 inches and a 118-degree faceted point angle. The web-thinned point reduces thrust and improves chip evacuation at entry. Right-hand spiral flutes and a straight cylindrical shank suit standard drill chucks and CNC toolholders alike. Machinists, toolroom technicians, and fabricators rely on this bit for tight-tolerance work where carbide rigidity is required.

This drill bit is suited for drilling cast iron, non-ferrous metals, stainless steel, and carbon steel. The screw machine length profile — shorter than jobber-length bits — reduces deflection and improves hole location accuracy in production drilling environments. Typical applications include fixture building, machined component drilling, and multi-pass operations where a rigid, compact bit outperforms longer-reach alternatives. The 5/8-inch flute length accommodates shallow-to-moderate hole depths at this diameter class.

Key Features

• Solid carbide construction for hardness and wear resistance in ferrous and non-ferrous materials
• 118-degree faceted point angle with web thinning to reduce entry thrust and improve centering
• Regular spiral flute geometry promotes consistent chip flow in short-hole drilling
• Straight cylindrical shank fits standard collets and keyless or keyed drill chucks
• Bright uncoated finish — ready for use without coating-related dimensional variance
• Diameter tolerance of +0.0000 to -0.0005 inches ensures consistent, close-tolerance hole sizing

Compatibility

Designed as an OEM-style screw machine length drill bit for use in standard drill chucks, collets, and CNC spindles accepting a 0.136-inch straight cylindrical shank. Rated for cast iron, non-ferrous metal, stainless steel, and steel workpieces.

Installation Notes

Installation and use should be performed by qualified machinists or toolroom technicians familiar with carbide tooling. Always secure the shank fully in the chuck or collet and confirm runout before drilling. Carbide is brittle — avoid side loading, interrupted cuts at high feed rates, or dropping the bit. No coolant-through capability; apply external cutting fluid as appropriate for the workpiece material.