Join Date: Jun 2001
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Re: All - Winch mounts
Here's an interesting link showing the tensile and shear strength for different sizes of grade 8 hardware. <a target="_blank" href=http://www.hobson.com.au/class_8.htm>http://www.hobson.com.au/class_8.htm</a>
I wouldn't use grade 5 on a winch mount, based on the specs listed in the link above, a 1/2" G8 bolt has a shear strength of about 17,000 lb/ft. If you're winching something that's 34,000lbs (2 bolts on the side, I assume) then you're going to need a much bigger winch and a 5 ton truck.