seville009
Veteran Member
- Joined
- Oct 22, 2007
- Messages
- 1,532
The OP must be confusing Grade 5 bolts by calling them Grade 3?-for 3 hash marks on the head.
Grade 2 usually make lousy shear bolts because they seldom break cleanly and tend to help elongate the hole.
Wonder what Erskine recommends?
Manual calls for grade 2