Square Head Screw Full Thread Black-Oxide Alloy Steel 1-8 * 2-1/2" Grade 8 [Cup Point] [External Square Drive] thread_size_m33_3-5 these are designed for through-hole

these are designed for through-hole applications

The screw has a length of 8" and a thread of 9/16-12

This hexagonal bolt has a length of 3-1/2" with a threading of 7/8-9 [Partially Threaded]

The screw has a length of 4-1/4" and a thread of 5/16-18

This hexagonal bolt has a length of 11-1/2" with a threading of 3/4-10 [Partially Threaded]

Square Head Screw Full Thread Black-Oxide Alloy Steel 1-8 * 2-1/2" Grade 8 [Cup Point] [External Square Drive] thread_size_m33_3-5 these are designed for through-holeUse 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 8.