Our 17-4 Shafts are precision machined with a standard propeller shaft taper, milled for 1/4" key and threaded with 3/4" standard thread on 1" and 1-1/8" shafts. Standard sizes are listed, or as a special service, we will cut to your specified length. Please allow approximately one week for this service. Overall length can be determined by measuring from the coupling in the boat to the aft end of the strut, and adding 5" for 1" shaft.
The tensil strength is 130,000 to 135,000.
Note: Prop shafts are available with a taper at both ends. There is an extra machining charge for the taper on the engine end. See 90-760 below. Before ordering a double tapered shaft, see this drawing and instructions.
For a guide to selecting shaft diameter based on propeller size, see our Hardware Description page.