Hertel 74148982 Screw Machine Drill Bit 11/32 in Carbide

Product Description

The HERTEL 74148982 is a screw machine length drill bit engineered for demanding metal cutting applications. Built from solid carbide grade C2, it delivers the rigidity and heat resistance needed to machine hard and abrasive materials that would rapidly wear high-speed steel tooling. The 11/32 inch (0.3438 inch decimal) diameter bit features a 135-degree split point for reduced thrust and self-centering on entry, a web-thinned parallel web for improved chip evacuation, and a slow spiral flute geometry optimized for the tough, stringy chips common in stainless steel and nickel alloy work. Licensed machinists and tooling professionals typically reach for this style of bit when a standard jobber length would deflect or chatter.

This drill bit is suited for production and maintenance machining environments where short, rigid tooling is required for accurate hole location without a center drill. The slow spiral flute design is matched specifically to primary workpiece materials including cast iron, nickel alloy, stainless steel, titanium alloy, and tool steel. The straight cylindrical shank seats directly in standard drill chucks or collet holders without adapters. Coolant-through is not supported on this bit, so external flood or mist cooling should be applied at the cutting zone during extended use in hard alloys.

Key Features

• Solid carbide C2 grade construction for superior wear resistance in hard and abrasive metals
• 135-degree split point reduces entry thrust and self-centers without a pilot hole
• Web-thinned parallel web improves chip flow and reduces cutting forces
• Slow spiral flute geometry optimized for stainless steel, nickel alloy, titanium alloy, cast iron, and tool steel
• Right-hand cutting, straight cylindrical shank fits standard chucks and collet holders
• Screw machine (stub) length for maximum rigidity and reduced deflection in close-tolerance work
• Bright/uncoated finish; diameter tolerance held to +0.0000 to -0.0005 inches

Compatibility

Designed for use in CNC machining centers, drill presses, and manual lathes equipped with standard drill chucks or collet systems accepting a straight cylindrical shank. Part of the HERTEL HSSC135-SS series, targeted at applications in cast iron, nickel alloy, stainless steel, titanium alloy, and tool steel.

Installation Notes

This bit should be installed and operated by qualified machinists or tooling technicians familiar with carbide tooling requirements. Ensure the machine spindle and chuck are fully powered down and locked out before inserting or removing the bit. Carbide is brittle - avoid using this bit in hand-held drills or applications with interrupted cuts that generate high lateral impact loads. Apply adequate external coolant or cutting fluid to the cutting zone to manage heat buildup when drilling stainless steel, titanium alloy, or nickel alloy.