RS PRO Collar One Piece Screw, Bore 25 mm, OD 40 mm, W 16 mm, Steel Use this RS PRO one-piece shaft collar to position bearings, sprockets and pulleys on shafts. Its zinc-plated steel construction makes it highly durable and provides resistance to impact and corrosion. This gives it a long service life, even when used in demanding environments. This handy product has a one-piece design that makes for quick and easy installation. Just pop the collar onto the shaft and use the setscrew that comes with the product to secure it in place. As part of the RS PRO range, this component has undergone testing by engineers to guarantee its quality and safety. Products like this one are used for positioning components on shafts in industries such as packaging, agriculture and manufacturing. Features and Benefits - Screw fastening - Zinc-plated finish - Steel material - One piece - Outside diameter of 40 mm - Shaft diameter of 25 mm - Single wide - Threaded bore size of M8 x 25 - Width of 16 mm