01C517 - Walter Letter Q Sst Drill Bit

Reliable Precision for Tough Metal Fabrication

For professional welders and fabricators, the Walter Letter Q SST+ Drill Bit (01C517) is the ultimate solution for drilling precise holes in challenging materials. When working with stainless steel, work-hardening is a constant enemy; if a drill bit rubs instead of cuts, the material becomes nearly impossible to penetrate. Walter has addressed this issue with the SST+ line, which features a heavy-duty cobalt blend construction designed to bite instantly and cut aggressively. The "Letter Q" size corresponds to a diameter of 0.3320 inches, a specific dimension often critical for tapping operations or precise clearance holes in assembly work.

The SST+ drill bit is built for speed and ease of use. Its self-centering Speed Tip is a massive advantage for field work where a drill press isn't available. You can place the tip exactly where you need the hole and start drilling with confidence, knowing the bit won't wander and mar the workpiece. This precision is essential when working on finished surfaces or expensive components. Additionally, the fully ground body and high-flow flutes ensure that metal chips are ejected quickly and efficiently. This prevents clogging and heat accumulation, keeping the cutting edge cool and extending the life of the bit significantly compared to standard alternatives.

Durability is further boosted by the bit's bronze surface treatment, which reduces friction and allows for smoother drilling action. This means you can drill more holes per bit, reducing downtime spent changing out dull tools and lowering your overall consumable costs. Whether you are drilling through thick mild steel plate, aluminum structural members, or stainless steel piping, the Walter Letter Q SST+ delivers the torque-efficient, heavy-duty performance that serious tradespeople rely on. Equip your shop with a drill bit that works as hard as you do.