Square Head Screw Full Thread Black-Oxide Alloy Steel 7/8-9 * 4-1/2" Grade 8 [Cup Point] [External Square Drive] Quantity:Unity They thread on from the

They thread on from the bottom of the nut

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

This hexagonal bolt has a length of 5 with a threading of 1-1/2-6 [Partially Threaded]

Zinc-plated steel threaded rods are corrosion resistant in wet environments

Screws that meet ASTM A574

Square Head Screw Full Thread Black-Oxide Alloy Steel 7/8-9 * 4-1/2" Grade 8 [Cup Point] [External Square Drive] Quantity:Unity They thread on from theUse 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 4 1 2" and a thread of 7 8 9.