01D535 - Walter 3.5Mm Sst Drill Bit

The Heavy-Duty Choice for Stainless Steel

When you are out in the shop or on the job site, time is money, and a dull drill bit is a major bottleneck. The Walter 01D535 SST+ 3.5mm Drill Bit is built for welders and fabricators who need a tool that can keep up with their workload. If you frequently work with stainless steel, you know how quickly it can work-harden and destroy standard high-speed steel bits. The SST+ is different. It uses a heavy-duty cobalt blend that resists the intense heat generated when drilling hard metals, allowing you to cut through stainless, mild steel, and aluminum with ease.

Forget about fumbling with a center punch every time you need to drill a hole. This bit features a 135-degree split point that centers itself instantly. This is a huge advantage when you are drilling into pipe, tubing, or other round stock where a standard bit would slip. The aggressive cutting action means you apply less pressure, reducing operator fatigue during long shifts. The bit also features a special bronze finish that isn't just for looks—it helps the bit run cooler and smoother, extending its life significantly compared to black oxide or bright finish bits.

The 01D535 is designed with a "High Flow" flute shape that pulls chips out of the hole fast. This is crucial because re-cutting chips is a primary way bits get dull. By clearing the path, the cutting edges stay sharp longer. The body of the bit is also slightly back-tapered, which stops the sides of the bit from rubbing against the hole and binding up. Whether you are drilling pilot holes, rivet holes, or clearance holes, the Walter SST+ 3.5mm bit is the reliable, high-performance choice for professional metalworkers.