OP
AllenArmory
Silver Member
Thanks for all the comments. I'll contact the dealer tomorrow. I'll answer all your questions in a little bit.
Agree with RickB and Oldoak. No need for shear bolts if there is a slip clutch.
BTW, you do a adjust and maintain your slip clutch right??? Don't let it freeze up.
Go back to the idiot dealer who didn't tighten the special metric tapered pinch bolts that attach your clutch to the gearbox and tell him to get you two new ones. And let him supply them at no charge.
It's pretty easy to tell if they are tapered pinch bolts; The holes in the clutch will be different diameters on one side than the other. The side where the nuts go will be machined flat; the other side may not be.
I concur with everyone else - those are CLAMPING bolts, not shear bolts. They may or may not be the special tapered-type locking bolts that some cutter/shaft manufacturers use (like my BushHog/B&P). Howse is your best bet for the details and for correct OEM replacements (unless they confirm that they are just standard grade __ bolts).
A concern now is if the splines on either side of the joint got too chewed up to reuse.
An 8.8 grade metric bolt is about the same as a grade 5. Metric bolts don't use the line system.
Bolt Depot - Bolt Grade Markings and Strength Chart
View attachment 507460
Take the original bolt to a hardware, auto parts or dealer, or tractor dealer, and find a match.
Bruce