Square Head Screw Full Thread Black-Oxide Alloy Steel 7/8-9 * 12" Grade 8 [Cup Point] [External Square Drive] Quantity:Unity The screw has a length

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

They thread on from the bottom of the nut

Carbon steel components are easier to machine than alloy steel components

and lifting and lowering heavy objects

They are at least 25% stronger than medium-strength steel washers

Square Head Screw Full Thread Black-Oxide Alloy Steel 7/8-9 * 12" Grade 8 [Cup Point] [External Square Drive] Quantity:Unity The screw has a lengthUse 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 12" and a thread of 7 8 9.