An often heard debate is the merits of threaded bolt versus an all-thread bolt. Strength is not really an issue because a 5/16 threaded bolt and a 5/16 all-thread bolt are nearly equal in tensile strength. The core diameter of both a threaded bolt and an all-thread bolt is where the bolts derive their over 70,000 psi of strength. As for all-thread bolts being cheaper; they are slightly less expensive but not lower quality. Dive Rite uses all-thread bolts not due to price, but in order to provide customers with the option to adjust their bolt height. Depending on the backplate brand and model, it is possible to have too many threads protruding causing the bolts to puncture a dry suit or wetsuit. The all-thread bolts allow you to precisely adjust the bolt height to perfectly fit any brand or size of backplate and wing assembly. Also, some divers add trim weight to the back of their tanks, again needing the length of all-thread bolts.