SPAX Step Drill Bit Drill 2 Step for T-STAR plus Countersunk Screws 3.5-4.0 mm, 1/4 inch Hex Shank, 65 mm

Pre-drilling and countersinking for SPAX T-STAR plus countersunk screws can be time-consuming when using separate tools. This SPAX step drill bit combines both operations in one pass, creating a pilot hole and countersink in a single step for screws with a diameter of 3.5 to 4.0 mm.

Who is it for

Woodworkers, carpenters, and DIY enthusiasts who frequently use SPAX T-STAR plus countersunk screws in wood, chipboard, MDF, or plastics and want a faster, more precise workflow.

Main features

• Two-step design drills pilot hole and countersink simultaneously.
• Compatible with SPAX T-STAR plus countersunk head screws, 3.5–4.0 mm diameter.
• 1/4 inch (6.35 mm) hex shank fits standard cordless drills and impact drivers.
• Made from special hardened steel for durability.
• Bright finish, uncoated.
• Overall length: 65 mm.
• Pilot hole diameter: 2.5 mm; maximum countersink diameter: 7.0 mm.

Specifications

• Product type: Step drill bit
• Number of steps: 2
• Compatible screw diameter: 3.5 - 4.0 mm
• Compatible screw head type: SPAX T-STAR plus (countersunk head)
• Shank type: Hex shank
• Shank size: 1/4 inch (6.35 mm)
• Material: Special hardened steel
• Recommended materials: Wood, chipboard, MDF, plastics
• Overall length: 65 mm
• Pilot hole diameter: 2.5 mm
• Countersink diameter (max): 7.0 mm
• Packaging quantity: 1 piece
• Tool compatibility: Cordless drills, impact drivers (with 1/4" hex chuck)

Tips

For best results, use with a cordless drill or impact driver at moderate speed. Ensure the bit is fully seated in the hex chuck before use. The bright finish is suitable for wood and plastic; avoid using on metal.