Socket Head Cap Screw Fine Thread Black Steel 1-1/4-12 * 4" Grade 8 [Cup Point] [Allen Drive] Quantity:Unity The screw has a length

The screw has a length of 8 and a thread of 5/8-18

The screw has a length of 8 and a thread of 1/2-20

The screw has a length of 4 and a thread of 1-1/8-12

The screws have a thread of 1-8 and a length of 4-1/4

and flanges

Socket Head Cap Screw Fine Thread Black Steel 1-1/4-12 * 4" Grade 8 [Cup Point] [Allen Drive] Quantity:Unity The screw has a lengthWith 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. The screw has a length of 4 and a thread of 1 1 4 12. Alloy 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.