PicoFinish® Fine Screwdriver Hex 0.7 mm x 40 mm - Wiha 42420

A 0.7 mm internal hex is among the smallest key widths found in precision mechanics, requiring a tool precisely matched to this dimension. The PicoFinish® 42420 provides exactly that: a 40 mm blade in chrome-vanadium-molybdenum steel with an exact 0.7 mm (0.028'') hex, paired with the ergonomic PicoFinish® handle.

Benefits

• 0.7 mm internal hex blade in chrome-vanadium-molybdenum steel, matt chrome-plated, for the smallest hex profile
• Additional inch specification 0.028'' for international applications
• Smooth rotating cap with quick-turning zone for sensitive rotation without force peaks
• Compact 9 mm handle diameter for precise handling of miniature screws
• Profile symbols on the rotating cap for fast identification

Technical data

• Internal hexagon: 0.7 mm (0.028'')
• Visible blade length: 40 mm
• Handle diameter: 9 mm
• Overall length: 134 mm
• Product dimensions (LxWxD): 135 x 17 x 17 mm
• Material: Chrome-vanadium-molybdenum steel, matt chrome-plated

Applications

Essential for 0.7 mm hex screws in watchmaking, micro-optics, precision mechanics, model making, and hobby activities. Made in Germany (HS 82054000).