Walter-titex 5153737 Screw Machine Drill Bit 0.397 in

Product Description

The WALTER-TITEX 5153737 is a screw machine length drill bit designed for high-performance metal drilling in demanding shop and field applications. Manufactured from cobalt vanadium high speed steel, it carries a 0.397 inch (Letter X) diameter and measures 3.5 inches in overall length. The 130-degree split point reduces walking on entry and lowers thrust requirements, while the parabolic two-flute geometry accelerates chip evacuation. A bright, uncoated finish makes coating wear easy to monitor during use. This bit is intended for installation and use by machinists, tool-and-die workers, and trade professionals requiring consistent hole quality in hard and abrasive workpiece materials.

The 5153737 is suited for drilling cast iron, stainless steel, hardened steel, non-ferrous metals, and other hard materials where a standard HSS bit would lose edge retention too quickly. Its screw machine (stub) length body provides increased rigidity compared to jobber-length bits, making it a preferred choice for drill press, CNC, and turret lathe setups where runout and deflection must be minimized. The 3xD flute-to-diameter ratio and tapered web configuration support deeper penetration up to a maximum drilling depth of 1.1 inches.

Key Features

• Cobalt vanadium high speed steel construction for extended tool life in hard and abrasive materials
• 130-degree split point reduces drill walk and lowers entry thrust
• Parabolic two-flute design promotes fast, efficient chip removal
• Screw machine length body increases rigidity and reduces deflection versus jobber-length bits
• Web-thinned, tapered web configuration for improved penetration performance
• Meets DIN, ISO, and BS dimensional standards for consistent interchangeability

Compatibility

Designed as a direct-fit replacement or new installation for applications requiring a Letter X (0.397 inch) diameter screw machine length drill bit conforming to DIN, ISO, and BS standards. Compatible with straight-shank chuck holders and collets sized for the straight-cylindrical shank profile. Belongs to WALTER-TITEX Series A1148.

Installation Notes

This drill bit is installed by machinists and trade professionals using a standard drill press, CNC machine, lathe turret, or handheld drill with a compatible straight-shank chuck. Secure the shank fully in the chuck to the recommended grip depth before operating. Inspect the cutting edges and web thinning area for wear or chipping before each use, and replace the bit if edge integrity is compromised. Follow machine manufacturer speed and feed recommendations for the specific workpiece material being drilled.