Provides dimensions and tolerances for taps for Unified threads. The nominal sizes given in the tables are in accordance with the nominal sizes given in BS 1580. Details of the formulae and tables of the basic elements to be employed in calculations relating to taps for special threads are also given, and the alternative forms of crest resulting from different manufacturing processes are illustrated in Appendix A.
Methods of testing rocks for engineering purposes, Method 3.1: Rock swelling and slake durability tests - Determination of the swelling strain developed in an unconfined rock specimen
