Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 1-14 * 2-1/2" Grade 8 [Cup Point] [External Square Drive] plug Fine and extra-fine threads are

Fine and extra-fine threads are closely spaced to prevent loosening from vibration: the finer the thread

the eyes lie in a flat position for easy removal from beneath loads

The screw has a length of 2-3/4" and a thread of 5/8-11

This hexagonal bolt has a length of 10" with a threading of 3/4-16 [Partially Threaded]

This hexagonal bolt has a length of 4" with a threading of 1-3/8-6 [Partially Threaded]

Square Head Screw Fine & Full Thread Black-Oxide Alloy Steel 1-14 * 2-1/2" Grade 8 [Cup Point] [External Square Drive] plug Fine and extra-fine threads areUse these set screws for light duty holding. A square head allows them to be turned by hand, or fastened with a wrench when you need more torque. The cup point has a thin edge that digs into the contact surface for a secure hold. Length is measured from under the head. The screw has a length of 2 1 2" and a thread of 1 14.