Square Head Screw Full Thread Black-Oxide Alloy Steel 1/2-13 * 9" Grade 8 [Cup Point] [External Square Drive] Quantity:Unity The screws have a thread

The screws have a thread of 1-8 and a length of 9

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

The screw has a length of 1-1/2" and a thread of 5/8-11

This rod has a length of 36 and a thread of 1-14

Square Head Screw Full Thread Black-Oxide Alloy Steel 1/2-13 * 9" Grade 8 [Cup Point] [External Square Drive] Quantity:Unity The screws have a threadUse 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 9" and a thread of 1 2 13.