The 1593QS100BK is a 100-pack of black #4 x 3/4" self-tapping replacement screws for Hammond 1593 series enclosures. It serves builders who use black 1593 or 1553 enclosures and want the longer 3/4" closing screws in a matching dark colour.

The manufacturer describes the part as replacement screws for 1593 series enclosures, black, 100-pack, with the short description noting the 3/4" length. The series hardware list classes them as assembly screws for the 1593 and 1553 series.

The screws are made of steel and come in shrink-wrap packaging. Each pack contains 100 screws with a shipping weight of 0.18 lbs (0.08 kg). The 1593QS100BK is RoHS compliant and REACH compliant, supporting builds that must meet those requirements.

The same #4 x 3/4" screw is also listed without the black finish, and black #4 x 5/8" screws are listed for the 1593 and 1599 series if you need the shorter length. In most cases, enclosures include all hardware needed for assembly, so this pack is for replacements and spares. Hardware packs may not be compatible with all parts in the listed series; check the enclosure's replacement parts and accessories list to confirm the right screw.