Countersink Drill Bit Set TEWORDA 15pc Nitride HSS

Description

Product Overview

The TEWORDA 15‑piece countersink drill bit set is engineered for comprehensive woodworking applications. Each bit is forged from industrial‑grade high‑speed steel (HSS) and treated with a nitride coating that resists heat buildup, extending edge retention by up to 40 % compared with standard HSS. The set includes tapered pilot bits ranging from #4 to #1 ¼, two high‑carbon steel wood plug cutters, and precision‑machined stop collars that lock depth at 1/16‑inch increments. With an 82° countersink angle and a compact 6.1 × 1.89 × 0.39 in footprint, the bits deliver clean, flush screw heads in hardwoods, softwoods, plywood and MDF. The polished flutes efficiently evacuate chips, minimizing tear‑out and ensuring smooth operation at speeds up to 3,000 RPM.

Usage

Designed for both professional craftsmen and serious DIY enthusiasts, this set excels in cabinet making, furniture assembly, trim work and repair projects. The adjustable stop collars allow you to set exact pilot depths, eliminating guesswork and ensuring consistent results across multiple holes. The included plug cutters create tight‑fitting wood plugs that match the original hole diameter, perfect for concealing screw heads in finished pieces. Whether you are using a cordless drill, a bench‑mounted drill press or a power driver, the 1/4‑in shank fits standard chucks for seamless integration into your workflow.

Why Choose Us

TEWORDA combines decades of tool‑making expertise with rigorous quality control to deliver a set that outperforms generic alternatives. The nitride‑treated HSS provides superior heat resistance, reducing the need for frequent re‑sharpening. Each plug cutter is mirror‑polished to prevent wood splintering, and the depth collars are calibrated for repeatable accuracy. Backed by a 4.4‑star rating from 41 verified customers, this set has earned a top‑100 rank in the Tools & Home Improvement category, reflecting its reliability and value.

Key Features

• Industrial‑grade nitride‑treated HSS bits stay sharp 40 % longer
• Adjustable stop collars lock pilot depth for consistent, flush screw heads
• Includes two high‑carbon steel wood plug cutters for seamless hole repair
• 82° countersink angle and tapered guides prevent wood tear‑out
• Universal 1/4‑in shank fits hand drills, drill presses and power drivers

FAQ

What size pilot holes do the bits create?

The set provides #4 (7/64″), #6 (9/64″), #8 (11/64″), #10 (3/16″), and #1 ¼ (5/16″) pilot diameters, covering the most common screw sizes for woodworking.

Can I use the plug cutters on hardwoods?

Yes. The high‑carbon steel cutters are sharpened to a mirror finish, allowing clean cuts in both hardwoods and softwoods without splintering.

Do the stop collars work with a drill press?

Absolutely. The collars lock onto the bit shank and remain secure under the pressure of a drill press, providing precise depth control.

Is the nitride coating durable?

The nitride treatment is a hard, oxidation‑resistant layer that significantly reduces heat buildup, extending the life of the cutting edge even under heavy use.

What warranty does TEWORDA offer?

TEWORDA provides a limited one‑year warranty against manufacturing defects, ensuring you receive a reliable tool for your projects.