Walter-titex 5057053 Screw Machine Drill Bit 0.189 in

Product Description

The WALTER-TITEX 5057053 is a screw machine length drill bit engineered for high-performance drilling in demanding trade and industrial applications. It measures 0.189 inches (Wire Size No. 12) in diameter and is manufactured from Cobalt Vanadium High Speed Steel, providing elevated heat resistance and edge retention compared to standard HSS tooling. The 130-degree split point reduces walking on entry and lowers the thrust required to initiate a cut. At 2-7/16 inches overall length with a 1-1/32 inch flute length, it fits standard drill chucks and quick-change tooling holders used by machinists, pipefitters, and maintenance mechanics.

This bit is designed for use on a wide range of workpiece materials including steel, stainless steel, cast iron, hard materials, and non-ferrous metals, making it a versatile option for HVAC, plumbing, and industrial maintenance drilling tasks. The screw machine (stub) length format improves rigidity and reduces deflection in drill press, CNC, and hand-drill applications where precise hole placement is required. The parabolic flute geometry promotes efficient chip evacuation, which is especially important when drilling stainless steel or hard ferrous alloys. This bit is sold individually and is subject to a minimum order quantity of 5 units.

Key Features

• Cobalt Vanadium High Speed Steel construction for improved heat and wear resistance in hard materials
• 130-degree split point reduces entry walking and lowers drilling thrust requirements
• Parabolic flute geometry with web thinning promotes fast chip evacuation and reduces heat buildup
• Screw machine (stub) length increases rigidity and minimizes deflection vs. jobber-length bits
• Bright/uncoated finish maintains dimensional accuracy close to nominal; diameter tolerance of -0.00071 to 0.000 inches
• Conforms to DIN, ISO, and BS standards; Series A1148

Compatibility

Suitable for drilling cast iron, hard materials, non-ferrous metals, stainless steel, and steel. Compatible with standard straight-cylindrical shank drill chucks. Meets DIN, ISO, and BS specification designations for screw machine length drill bits.

Installation Notes

Installation is performed by machinists, maintenance mechanics, or trade professionals using a drill press, milling machine, or hand drill with a compatible chuck. Secure the workpiece firmly before drilling and use appropriate cutting fluid or coolant when drilling stainless steel or hard ferrous alloys, noting that this bit does not have through-coolant capability. Inspect the cutting edges before each use and replace when chipping or dullness is observed to maintain hole quality and dimensional accuracy.