Speaker stand pole adapter, 35 mm socket
A cup that fits over a 35 mm speaker stand pole and provides a flat top with screw holes for a monitor speaker or small light that lacks a pole socket. The socket bore is 35.4 mm and 60 mm deep with 4 mm walls and an M6 hole for a locking bolt, and the top is a 100 x 100 mm plate 6 mm thick with a grid of 5 mm holes to suit several mounting patterns. Fillets of 3 mm at the pole-to-plate junction share the load.
Pole diameters run 32, 35 and 38 mm and top plates need to match your particular speaker, which is exactly the kind of detail SpeakCAD takes from your description. Preview free in your browser and ask for a tilt angle, a larger plate or a threaded insert pocket.
Design a speaker stand pole adapter. Socket bore 35.4 mm, 60 mm deep, 4 mm walls, 6.5 mm cross hole for an M6 bolt. Top plate 100x100x6 mm with 5 mm holes on a 4x4 grid at 25 mm spacing. 3 mm fillets where the socket meets the plate.