Socket Head Cap Screw Fine Thread Black Steel 1-1/4-12 * 4" Grade 8 [Cup Point] [Allen Drive] length_8-1-2 they'reabout 25%stronger than medium-strength steel

they'reabout 25%stronger than medium-strength steel locknuts

This hexagonal bolt has a length of 5-1/2 with a threading of 1-1/8-7 [Partially Threaded]

provides high resistance to corrosion in dry and wet environments

This hexagonal bolt has a length of 12" with a threading of 1-1/8-7 [Partially Threaded]

The screw has a length of 6-1/2 and a thread of 1-1/8-12

Socket Head Cap Screw Fine Thread Black Steel 1-1/4-12 * 4" Grade 8 [Cup Point] [Allen Drive] length_8-1-2 they'reabout 25%stronger than medium-strength steelWith 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.