Makita D-06317 HSS-G Drill Bit 3.5mm x 70mm - 10 Pcs/Set

They are optimized for drilling into metal and steel, including mild steel and some alloys. For best results, use proper lubrication and controlled feeds to maintain sharpness and reduce heat.

High-Speed Steel provides a good balance of hardness and toughness, allowing faster cutting, longer life in metal, and better heat resistance compared with standard carbon steel bits.

The 70 mm length offers extended reach for deeper holes and allows you to work on thicker materials or components where longer bits are beneficial, while maintaining a compact shank for stable drilling.

The coating helps reduce friction, slows dulling from heat buildup, and improves bit life when drilling through metals, especially during extended or repetitive drilling tasks.

Insert the bit into a compatible drill chuck, tighten securely, and use a steady, moderate feed while maintaining a constant drilling speed. Use cutting fluid or light oil for metal drilling, and back out occasionally to clear chips.

Clamp your workpiece securely, apply gentle lubrication, avoid overheating by using moderate speeds, drill with a straight, steady pressure, and withdraw the bit periodically to clear chips.

Start at a modest speed suitable for metal drilling and adjust based on material hardness and chip formation. Maintain a steady feed, avoid pushing too hard, and stop if you notice excessive heat or smoking. Always use lubrication to reduce wear.

If you’re exploring other options on Fepy, you might compare these commonly considered alternatives: Makita D-06311 HSS-G Drill Bit Set 3.5mm x 75mm - 10 pcs (for longer bits) at https://fepy.com/product/makita-d-06311-hss-g-drill-bit-set-3-5mm-75mm-10pcs-set and Bosch HSS-G Drill Bit Set 3.5mm x 70mm - 10pc at https://fepy.com/product/bosch-hss-drill-bit-set-3-5mm-70mm-10pc. These offer similar metal-drilling performance with slight size or brand variations.

This set is well-suited for metal fabrication, automotive tasks, hardware assembly, and DIY projects requiring precise 3.5 mm holes through metal plates, brackets, or housings.

Store them in a dry, organized case or tray to prevent nicks and corrosion. Clean any residue after use, ensure they are dry before storage, and avoid contact with other hard tools that could dull or chip them.

The Makita D-06317 set offers a reliable 10-piece HSS collection with a uniform 3.5 mm diameter and 70 mm length, suitable for frequent metal drilling. When evaluating value, consider bit material, length, coating, and the number of pieces to determine how well it fits your project needs and budget.