- Bolt Science specialise in solving bolting problems and have the premier web site for engineering information on threaded fasteners such as bolts, screws, studs and nuts. The site features information on torque tightening, vibration loosening, bolted joint analsysis, thread stipping. Information on the company's software products such as BOLTCALC, TORQUE and FASTENER is also included. The ...www.boltscience.com