Square Head Screw Full Thread Black-Oxide Alloy Steel 1-8 * 5-1/2" Grade 8 [Cup Point] [External Square Drive] thread_size_1-2-13 these low-profile screws are nearly

these low-profile screws are nearly twice as strong as their stainless steel counterparts

It is made of black zinc plated and thus provide medium resistance to corrosion in dry environments and low resistance in wet environments

Screws that meet ASTM A574

The screw has a length of 6-1/2" and a thread of 5/8-11

The screw has a length of 4 and a thread of 1-1/4-12

Square Head Screw Full Thread Black-Oxide Alloy Steel 1-8 * 5-1/2" Grade 8 [Cup Point] [External Square Drive] thread_size_1-2-13 these low-profile screws are nearlyUse 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 5 1 2" and a thread of 1 8.