Construction & Engineering

This adapter allows 3mm hexagonal shafts, the kind found on many Tamiya gearboxes, to be connected to LEGO’s wide variety of high-quality wheels. T...

Keep your components separated with this 25-pack of 12mm-long (0.47") nylon spacers. These spacers have an outer diameter (OD) of 5 mm (0.20") and ...

This #4-40, pan-head screw is 1 1/4″ (1.25″) long. It is made from steel, is zinc-plated, and comes in packs of 25.

Metal long standoffs: 1" long x ¼" OD. Used to get your proto board up off the table. #4-40 thread. Fits most development boards with available hol...

This #4-40, pan-head screw is 1/4″ (0.25″) long. It is made from steel, is zinc-plated, and comes in packs of 25.

Metal Hex Male/Female standoffs. #4-40 thread with 3/8" shank and 3/16" thread length. Can be stacked to create any length. Pack of 10

Pack of 200 steel screws. Specifications Fastener Type Screw ...

We could talk about how the Zinc used in these nuts is only from the finest old-growth Zinc trees from across the globe and is hand picked only at ...

These continuous rotation 5:1 gear ratio channel gearbox kits incorporate threaded side mounts to easily attach a standard size servo to numerou...