Thank you Mark. With your info, I did a short Google search and came up with this article:
http://www.pirate4x4.com/tech/billavista/NutsandBolts/Nuts&Bolts_signed.pdf So the point is that with one bolt on each fitting, only that one fitting must lose friction in order to load its bolt in shear. With ONE bolt across both junctions BOTH fittings will have to lose friction in order to load the bolt in shear. Thus: there is a doubling of friction , decreasing the odds of loading the single bolt In shear. Do I have that correct? -- Glenn Martin (N5PQ) Martek Mississippi Electronic Repair 13238 Hudson-Krohn Rd. Biloxi, MS, 39532 rep...@martekmississippi.com