Presented below are links to other sites that have content related to bolted joints and fasteners in general.

Fastener Fair/Fastener & Fixing Europe
Assembly Magazine
FERA (Fastener Engineering and Research Association)
FastenerWeb - Fastener industry inventory listings, catalogs, etc.
LINK Magazine for Fastener Distributors
American Fastener Journal Home Page
United States Fastener Legislation - Fastener Quality Act
MACHINE DESIGN Online - A US based design/engineering magazine