Drill bit Irwin HSS cylindrical for metal 1.5 mm, 2 pcs

Irwin HSS cylindrical drill bit set for metal contains two 1.5 mm high-speed steel bits designed for precise small-diameter drilling in thin metal and light metalwork. These bits are intended for use in standard drill chucks and offer the hardness and heat resistance typical of HSS material, allowing accurate holes for fastening, electronics, jewelry and model-making applications where compact, clean holes are required.

Advantages

The HSS construction provides a balance of hardness and toughness for drilling thin sheets and soft alloys while resisting heat build-up. The cylindrical shank ensures compatibility with most standard chucks and stable rotation, contributing to consistent hole size and straightness. Supplied as a pair, the set offers immediate replacement or a spare for continuous work, reducing downtime during small projects.

Suitable for

• Drilling holes in thin steel, brass, copper and aluminum sheets
• Precision work in electronics and printed circuit boards (through metal housings)
• Jewelry making and model-making requiring fine metal holes
• Fastening preparation for small screws, rivets and pins

Key specifications

• Material: high-speed steel (HSS)
• Diameter: 1.5 mm
• Shank type: cylindrical (suitable for standard chucks)
• Quantity: 2 pieces
• Intended material: thin metal sheets and light metalwork

How to use

Secure the 1.5 mm HSS bit in a compatible drill chuck, ensuring firm clamping of the cylindrical shank. Mark the drilling point and, if possible, use a center punch to prevent bit walking on smooth metal surfaces. Start at a low speed to establish the hole, apply moderate, steady pressure and increase speed as penetration progresses. Use cutting lubricant for steel and harder alloys to extend bit life and reduce heat. Clear swarf regularly and avoid excessive axial force or side loads to minimize breakage risk for small-diameter bits.

Usage recommendations

For best results, match drill speed and lubrication to the metal type: lower speeds with coolant for stainless or hardened steels, and higher speeds for soft non-ferrous metals. Replace the bit when wear affects hole accuracy; keep a spare bit from the set available to maintain work continuity.