M3 x 25mm Socket Head Cap Screw (pack of 100), Zinc Plated.  Can be used with our M3 Stainless Steel Split Washers for an ideal fit.

A Studica Robotics 1mm, 3M screw spacer (25 pack), for use with robotics design builds.

Made from delrin in blue, this M3 Screw Spacer has a 3.2mm ID x 5.5mm OD x 2mm thick. 

Made from delrin in blue, this M3 Screw Spacer has a 3.2mm ID x 5.5mm OD x 5mm thick. 

M3 stainless steel split washers for use with M3 screws.

Pack of 10 precision M3 flat washers crafted from 304 stainless steel. Inner diameter: 3mm, outer diameter: 7mm, thickness: 0.5mm. Corrosion-resistant and perfect for robotics and mechanical applications.

The Studica Robotics M3 x 55mm Socket Head Cap Screw 16-Pack provides a set of high-quality metric socket head cap screws perfect for robotics, mechanical assemblies, and engineering projects. Each pack includes 16 M3 x 55mm stainless steel screws, offering strong, reliable fastening where precision and durability matter. 

The Studica Robotics HEX Chain and Sprocket Pack is a complete power transmission hardware kit built for competitive robotics, classroom projects, and custom mechanical designs. This comprehensive pack includes a heavy-duty #25 roller chain with master links, a variety of precision sprockets, flanged bearings, shaft hubs, spacers, collars, socket head cap screws, and a chain breaker tool — giving you everything needed to build efficient drivetrain systems or other mechanical linkages.