1/2″ – 13 UNC x 2.1/2 Stainless Steel 304 Countersunk (Flat) Head Socket Screw

Countersunk (flat) head socket screws (also known as Allen head or cap screws), are a countersunk head fastener tightened using a hex Allen wrench. Flat head cap screws are designed and recommended for moderate fastening applications: machine guards, hinges, covers, etc. They are not suggested for use in critical high strength applications where socket head cap screws should be used.