The SC550-50 is a pack of 50 #2 x 1/2" self-tapping screws, listed in the Small Case Hardware table as the assembly screws for the 1552 series enclosure. It is a straightforward replacement for technicians, makers and OEM builders who need to close a 1552 case after the original screws have gone missing or worn.

The manufacturer's descriptions refer to the head style in two ways: the long description reads "#2 X 1/2" PN SELFTAP" (pan head) while the short description reads "#2 X 1/2" FH SELFTAP-50 PCS" (flat head). If head style matters for your build, compare against the screws originally supplied with your enclosure. Either way, the screws are self-tapping and cut their own thread when driven in.

The pack holds 50 pieces in a package measuring 2.5 in x 1.5 in x 0.75 in (64 mm x 38 mm x 19 mm), with a shipping weight of 0.05 lbs (0.02 kg). The SC550-50 is RoHS compliant and REACH compliant. A black version is catalogued separately as SC550BK-50.

Enclosures in most cases include all hardware needed for assembly, so this is a replacement pack. Hardware packs may not be compatible with every part in a listed series, so check the series landing page or the "Replacement Parts and Accessories" section on your enclosure's part page before ordering.