Hertel 74148727 Screw Machine Drill Bit 1/16 in Carbide

Product Description

The HERTEL 74148727 is a solid carbide screw machine length drill bit designed for high-performance drilling in hard and abrasive workpiece materials. Built to the HSSC135-SS series standard, it features a 135-degree split point that reduces walking and cutting force at entry, and a slow spiral flute geometry that promotes chip evacuation in difficult materials. At 0.0625 inches in diameter with a 1-5/8 inch overall length and a 5/8 inch flute length, this is a short, rigid cutting tool suited for precision work where deflection must be minimized. It carries a C2 carbide material grade and a bright uncoated finish, making it ready to run out of the package in the right applications.

This bit is engineered for drilling cast iron, nickel alloy, stainless steel, titanium alloy, and tool steel - materials that typically wear out high-speed steel tooling quickly. The screw machine length body keeps the bit compact and stiff, which is ideal for CNC machining centers, drill presses, and production environments where tool rigidity directly affects hole quality and positional accuracy. It is commonly used by machinists and tool-and-die professionals working in job shops, aerospace component shops, and MRO facilities.

Key Features

• Solid carbide construction in C2 material grade for durability in hard and abrasive materials
• 135-degree split point reduces entry thrust and minimizes bit walking without a center punch
• Slow spiral flute design optimized for chip control in stainless steel, titanium, and nickel alloys
• Web-thinned, parallel web configuration reduces cutting resistance at the chisel edge
• Diameter tolerance of +0.0000 to -0.0005 inches for tight-tolerance hole applications
• Bright uncoated finish compatible with cutting fluids and suitable for a wide range of coolant strategies
• Right-hand cutting direction with straight cylindrical shank for standard drill chuck compatibility

Compatibility

Designed as a screw machine length replacement or production drill bit for use in standard straight-shank drill chucks and collet holders across CNC machining centers, turret lathes, and bench drill presses handling hard ferrous and exotic alloy workpieces.

Installation Notes

This bit should be installed in a clean, properly sized drill chuck or collet holder and torqued securely before use to prevent slippage during cutting. Always confirm spindle speed and feed rate are appropriate for solid carbide tooling in the target workpiece material before engaging the cut. Coolant or cutting fluid use is recommended when drilling stainless steel, titanium, or nickel alloy to extend tool life, even though this bit is rated for dry cutting in some applications. Handle carbide tooling with care to avoid chipping the cutting edges during storage and setup.