7/8" x 1-7/8" Keyed, Shaft is not threaded for a bolt this was designed for a pressure washer so you would have to tap it out if you need it threaded. Pressure Washers & Log Splitters. Various engines with the same shaft size. This Listing is for (9) Engines This engine does not have a blade brake like most push mowers require, It was designed to be used on pressure washers but can be used for other things if you tap the bolt hole out.Bolt pattern measurements shown in second listing photo. The item "(9) Engines GCV 190 Honda 6hp Over Head Cam Motor 7/8 x 1-7/8 Vertical Shaft" is in sale since Thursday, December 29, 2016. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Outdoor Power Equipment\Engines, Multi-Purpose". The seller is "smallenginesforless" and is located in Albany, Indiana. This item can be shipped to United States.