Cap Screw Bolt, PT, GRADE 8 Yellow Zinc Chromate 5/8"-11 x 8.0" Length, 5 Pc

Head Width  15/16"

Head Height  27/64"

Thread Length Partial Thread 1 3/4" to 2 1/4"

Length is measured from under the head.

Grade 8 head marking of 6 radial lines

Class 2A Thread

ASME B18.2.1, ASTM A354BD