Socket Head Cap Screw Fine & Full Thread Black Steel 1-1/4-12 * 2" Grade 8 [Cup Point] [Allen Drive] Quantity:Unity use these screws with Grade

use these screws with Grade 9 nuts and screws

The screw has a length of 2-1/2" and a thread of 7/8-14

The screw has a length of 3-1/2" and a thread of 1-1/2-6

The screw has a length of 12" and a thread of 5/8-11

Socket Head Cap Screw Fine & Full Thread Black Steel 1-1/4-12 * 2" Grade 8 [Cup Point] [Allen Drive] Quantity:Unity use these screws with GradeWith a tensile strength of 170,000 psi, these alloy steel screws are stronger than Grade 8 steel screws. Length is measured from under the head. Black oxide steel screws are mildly corrosion resistant in dry environments. Fine and extra fine threads are closely spaced to prevent loosening from vibration: the finer the thread, the better the resistance. They are not compatible with coarse threads.