View Single Post
  #9  
Old 11-01-2005, 10:16 AM
samiam4 samiam4 is offline
Registered User
 
Join Date: Jul 2002
Posts: 1,141
Difference between rivets and bolts,

Hot rivets are HOLE FILLING and bolts are not generally. So, when you put a bolt in the open hole, locally you have 3 times the stress level as a filled rivet. Not good for fatigue life especially since holes are generally where cracks start.
Rivets are a shear fastener, bolts can be either tension or shear.

It was stated correctly, you want no threads in the shear joint. Ideally, you know the thicknesses of the 2 metal piece, and you find a grip length so there is no threads in the metal. You can use a washer under the nut, so it doesn't bottom on the threas. The shank (unthread portion of the bolt) should be available in 0.062 increments if you stay with aircraft bolts (160 ksi is a grade 8) or 0.125 for grade 8 bolts.

What size holes do you have approximately? You could find some surplus hi-locks and carefully match ream the holes. Install them with paint to prevent rust or some MIL-s-8802. You can use self-locking nuts and install with red loktite. No lock washers. I can give you some good torque values to use for the bolts once I know the diameter.

Michael
__________________
Michael McGuire
83 300d
01 vw A4 TDI
66 Chevy Corsa
68 GMC V6 w/oD
86 300E
Reply With Quote