These Trans-Dapt bolts are for use with Trans-Dapt Pulleys.
 
Part # Product Media
9490 CRANKSHAFT Pulley Bolts; 3/8"-24 x 1" (3 bolts per pkg.)
$4.27
9491 CRANKSHAFT Pulley Bolts; 7/16-20 x 1" (3 bolts per pkg.)
$3.20
9492 WATER PUMP Pulley Bolts (4 bolts per pkg.)
$3.37