Keyboard Feet / Bumpers

What are bumpers? These are the small adhesive or screw-on feet that attach to the bottom of your keyboard.

Why order them? Most folks get a couple more options to adjust and personalize the angle / height of their keyboard. If you prefer setting different heights to your keyboard (e.g. raise the whole keyboard up, tilt the front side or back end), you can pick from these bumpers.

Bumper heights (approx.): cork = 1/16 inch (1.6 mm). 4 square = 1/8 inch (3.2 mm). cylindrical = 1/4 inch (6.4 mm). dome (both adhesive and “medium with threads and nut”) = 1/2 inch (12.7 mm). large with screw and nut = just under 1 inch (21.4 mm)

Which are included by default? 4 cork-rubber bumpers/pads are included for each full classic case keyboard ordered. 4 square rubber bumpers are included by default for each ultra compact case keyboard ordered.

Recommendations: For a Model M style angle without the feet flipped out, I would recommend bumpers of equal height, such as 4 cork, 4 dome, 2 medium threaded + 2 dome, or 4 square. For a Model M style angle with feet flipped outwards, I would recommend the “2 medium threaded + 2 square” option. However if you prefer a keyboard to be a little higher up, a popular option is the 2 large and 2 dome. Please be sure to order 2 sets of the cork bumpers for the compact case Model F keyboards so you can double stack each one (these cases have screws that stick out of the bottom of the case so you want to double stack the cork bumpers because they are not too tall). Installing only one set of cork bumpers would be done at your own risk of scratching something. The half-inch tall bumpers with threaded stud built in is one of the most popular options for a secure attachment. This bumper does have an 8-32 thread so it is not recommended if you have the F62 or F77 and also ordered the solenoid whose mounting gear uses 6-32 threads, though you can use both if you drill another hole in the bottom of the zinc case.

Compatibility and important terms: The classic style case F62 and F77 keyboards have two holes on the bottom that can accept a threaded bumper or a bumper with a screw. The other keyboards have 4 holes. Obviously split keyboards have 4 holes for each half, so you'd want to get two sets of 4 bumpers per set. You can't mix and match sets, so if you want 4 threaded bumpers then you'll have to order 2 sets. The 1″ and half inch threaded stud bumpers have a grayish-black appearance which is normal for the SBR material. As noted on the McMaster-Carr web site, this material is not certified as non-marking (generally this means don’t put your keyboard on top of a paper document, for example, the same recommendation for the IBM original keyboards with rubber feet). Bumpers may vary in appearance and design from what is shown on this product page.