Socket Head Cap Screw Fine Thread Black Steel 1-1/4-12 * 4-1/2" Grade 8 [Cup Point] [Allen Drive] thread_size_10-32 these screws are nearly twice

these screws are nearly twice as strong as stainless steel flat head screws

This hexagonal bolt has a length of 4" with a threading of 7/8-9 [Partially Threaded]

This hexagonal bolt has a length of 7-1/2 with a threading of 1-1/4-7 [Partially Threaded]

Length is measured from under the head

Socket Head Cap Screw Fine Thread Black Steel 1-1/4-12 * 4-1/2" Grade 8 [Cup Point] [Allen Drive] thread_size_10-32 these screws are nearly twiceWith 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 1 2 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.