Triumph 500 650 Pre-Unit Engine Cover Allen Screw Set Stainless Steel BSW 1954-1962 PN# TBS-08-9226

This complete outer case cover socket-head screw set is suitable for fitment to the 1954-1962 pre-unit Triumph 500 and 650 twin-cylinder models. The screws replace the original primary, timing, and gearbox cover screws. Lengths may vary slightly from the original screws fitted, depending on the model year. Not suitable for early unit-construction Triumph 350 and 500 models from 1957-onward. Offered in corrosion-resistant stainless steel, this complete set of screws is threaded to 1/4″-20 British Standard Whitworth (BSW).  The socket heads are a convenient upgrade for routine clutch service and timing cover removal, providing a positive engagement with the Allen wrench used for loosening and tightening the screws. The bright stainless finish provides a durable and attractive upgrade from the original fillister head screws. It is advisable to clean the threads in the crankcase with a tap to allow for best thread retention and an oil-tight seal between the primary chaincase cover and the chaincase. Thread-locking compound is not recommended for use on cover sccrews. The product images shown are for illustrative purposes only and may not be an exact representation of the product received. Manufacturers occasionally make minor cosmetic changes to items, such as color, finish, label, or design. These changes do not impact the item’s function or compatibility. Please contact us if you have specific concerns regarding appearance.