40 pieces of silver carbon steel nickel-plated T-slot drop-in bolts included. Suitable for the European standard 45 series aluminum profile. Product specifications - Pitch: 1.25 mm (0.05 in) - Thread outer diameter: M8 - Rod length: 20 mm (0.79 in) - Head size: 19 x 8 x 5 mm (0.75 in x 0.31 in x 0.20 in) Material and finish - Carbon steel T bolt with nickel finish - High hardness and wear resistance - Corrosion and oxidation resistance - Finish helps improve the service life of carbon steel components Easy to use - Before purchasing, confirm the size of your aluminum profile or T-slot to match the T-bolt - To install, insert the screw head into the profile groove and rotate 90 degrees to clamp Key benefits - Quick, tool-free insertion into T-slots - Secure clamping for reliable assemblies - Durable nickel-plated finish provides corrosion resistance - Compatible with European standard 45 series aluminum profiles - Precise dimensions ensure consistent performance: pitch 1.25 mm, M8 thread, 20 mm rod, head 19 x 8 x 5 mm Use scenarios - Build or upgrade modular workstations, machine guards, or enclosures using 45-series profiles - Mount fixtures, clamps, jigs, or tool holders to a profile-based framework for repeatable setups - Create adjustable mounting points for equipment on assembly lines, CNC routers, or laser cutter benches