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.
Q: What is the difference between taper, plug and bottom taps? A: Taper taps are often called starting taps because they have more chamfered threads. Chamfer is the angled portion at the front of the tap which helps it start threading. Taper taps have 7 to 10 threads of chamfer. Plug taps have 3-5 threads of chamfer, bottoming taps have 1-1-1/2 threads of chamfer. Q: What is the difference between spiral point taps and hand taps?