Drill bit set STANLEY STA56015 — HSS-R metal drill bits, 10 pieces

STANLEY STA56015 is a 10-piece drill bit set engineered for metalworking tasks. The set includes rolled high-speed steel (HSS‑R) bits that balance hardness and toughness to resist wear and maintain cutting performance under elevated temperatures typical of drilling into sheet metal, pipes and structural components. These straight‑shank bits are intended for use with standard corded or cordless drills for repair, fabrication and maintenance operations where clean, accurate holes in metallic materials are required.

Advantages

The HSS‑R construction provides improved heat resistance compared with standard carbon steel bits, helping to preserve edge geometry during continuous drilling. The selection of diameters in the 10‑piece set offers flexibility for common hole sizes encountered in metalwork, reducing the need to change tools frequently. Straight shanks ensure compatibility with most drill chucks and deliver secure seating during operation.

Suitable for

• Drilling holes in sheet metal and thin steel panels
• Creating openings in metal pipes and tubing
• Maintenance and repair tasks on machinery and structural components
• General fabrication where various hole diameters are needed

When it may not be suitable

These HSS‑R bits are specifically intended for metal drilling and are not optimized for masonry, tile, glass or wood applications where different geometries or tip materials (e.g., carbide or masonry tips) perform better. For very large diameter holes, hardened or coated specialty bits may provide longer life and faster cutting.

Key specifications

• Material: Rolled high‑speed steel (HSS‑R)
• Number of pieces: 10
• Shank type: Straight shank for standard drill chucks
• Intended material: Metal (sheet metal, pipes, structural components)
• Typical use: Manual and power drilling with standard drills

How to use

Select the drill bit diameter appropriate for the hole required and secure it in the drill chuck ensuring firm clamping. Mark the drilling position on the metal and, if needed, use a centre punch to prevent walking. Use a steady drilling speed and apply moderate pressure; for thicker or tougher metals, reduce speed to control heat and prevent premature wear. Apply cutting fluid or lubricant for improved cooling and chip evacuation, and withdraw the bit periodically to clear chips when drilling deeper holes.

What to consider before purchase

• Verify the set contains the diameters you commonly need for your metalwork tasks.
• Consider the thickness and hardness of the metals you will drill; for very hard or abrasive alloys, consider coated or carbide options.
• Ensure your drill accepts straight‑shank bits and can run at appropriate speeds for HSS bits.

Usage recommendations

For best results with the STANLEY STA56015 HSS‑R set, start with a pilot hole for large diameters, use cutting fluid on ferrous metals, and match drill speed to material thickness: higher speeds for thin sheets, lower speeds for thicker or tougher metals. Regularly inspect bits for wear and replace if cutting performance declines.