In 1755, having risen to be a mate, Cook joined the Royal Navy, and after four years' service was, on the recommendation of Sir Hugh Palliser, his commander, appointed master successively of the sloop Grampus, of the Garland and of the Solebay, in the last of which he served in the St. Lawrence.
Tap Bolt vs Cap Screw. What is the difference between a tap bolt and a cap screw? A tap bolt is (typically) a fully threaded hex bolt, while a cap screw is (typically) a hex head bolt that will be installed by turning the head of the bolt (screw) instead of tightening it with a nut.
British Standard Pipe â BSP. BSP pipe, Like American National pipe (NPT, NPSM), is designated by trade size, rather than actual diameter, which is. approximately equal to the thread's Major Diameter in the table below. There are two types of BSP threads: â¢ BSPT: British Standard Pipe Taper -also known as R threads. â¢ BSPP: British Standard Pipe Parallel -also known as G threads. Both styles have the same thread angle, shape, and pitch (threads per inch).