Check the listing for details. (10 PACK) NAS1219-08E8 Length: 1/2", Thread: 8-32, Thread Length: 7/16" 100 Deg. Condition: New. Listed at 25.00 USD. Thread Class Thread Length Thread Direction Countersink Angle Thread Series Designator Head Style Internal Drive Style 99.0 degrees minimum and 101.0 degrees maximum.