Rockwood SP1039 1/4-20 x 1/2 in. Cone Head Machine Screw
Rockwood SP1051 1/4-20 x 1/2 in. Double Cone Head Machine Screw
Rockwood SP1058 5/16-18 x 1/2 in. Cone Head Machine Screw
Rockwood SP1059 5/16-18 x 1/2 in. Double Cone Head Machine Screw