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.
Hex Tap Bolts. Also known as fully-threaded Hex Cap Screws, these bolts have a variety of uses for construction, agriculture and automotive applications. We carry a complete line of grade 2, 5 and 8, coarse thread Tap Bolts. Fine thread available on request. Available in plain and zinc finishes. Stocked in diameters from 1/4 to 2 and a full range of lengths.