M.a. Ford 40512500 Combo Drill Countersink Size 4 Solid Carbide

Product Description

The M.A. FORD 40512500 is a combination drill countersink designed to perform simultaneous drilling and countersinking in a single pass. Built from solid carbide with a bright polished finish, this tool delivers consistent performance in hard and abrasive workpiece materials. The Series 405 design features a 5/16 inch body diameter, a 1/8 inch drill point diameter, a 60-degree included angle, and a 5 inch overall length. It uses a right-hand cutting direction with a plain cutting edge style and a double end type. Machinists and toolroom professionals install this tool in CNC mills, drill presses, and manual lathes where clean countersink geometry is required on the first operation.

This combo drill countersink is rated for use in demanding workpiece materials including steel, stainless steel, hardened steel, cast iron, and special alloys. Its long-length configuration provides added reach for deeper setups or workpieces with elevated surface profiles. The solid carbide construction maintains cutting-edge integrity at higher speeds and feeds compared to high-speed steel alternatives, making it a practical choice for production environments and precision fabrication shops where tool life and hole quality are priorities. This is a single-piece item sold individually.

Key Features

• Solid carbide construction for extended tool life in hard and abrasive materials
• Simultaneous drilling and countersinking in one pass reduces cycle time
• 60-degree included angle suits standard countersink geometry requirements
• Bright polished finish minimizes material adhesion and friction during cutting
• Long-length design at 5 inches overall length provides added reach in the spindle
• Double end type allows the tool to be flipped for extended use before replacement

Compatibility

Designed for use in steel, stainless steel, hardened steel, cast iron, and special alloys as stated in the product specifications. Suitable for use as a trade size 4 combo drill countersink in applications requiring a 1/8 inch drill point and a 5/16 inch body diameter.

Installation Notes

This tool is installed by machinists and toolroom professionals in standard drill chuck or collet holders rated for the 5/16 inch body diameter. Confirm spindle speed and feed rate are appropriate for solid carbide tooling in the target workpiece material before beginning a cut. Inspect the cutting edges before each use and do not run the tool if chipping or edge wear is visible. Solid carbide is brittle and should not be subjected to interrupted cuts or excessive lateral loading without verifying setup rigidity.