8020, 3342, 10 Series, 1/4-20 x 0.5 Inch 1/2 Inch Flanged Button Head Socket Cap Screw (FBHSCS) (25 Pack) Bolt Hardware Pack for 8020 Aluminum Extrusions

This 1/4 20 flanged button head socket cap screw is made out of steel with a black zinc finish. | The low domed head with a wider bearing surface offer a finished appearance, making them an ideal choice when a neat appearance is desired in home improvement. | These black steel screws come with a 0.56" diameter flange head and full thread length of 0.5" with a 5/32 Allen hex drive. Thread size is 1/4-20. | Used with t-nuts to mount brackets and plates to aluminum extrusions. Quick installation and can be re-purposed over and over. | These 1/4 20 bolts will work any 8020 1/4-20 t-nuts for your extruded rail projects.