The 1590WMS100BK is a 100-pack of black watertight #6-32 x 1/2" stainless steel screws with o-rings for Hammond's imperial 1590 series enclosures. It serves integrators and OEM engineers who seal 1590 or 1590K4 enclosures and want replacement fasteners in black to match a dark enclosure finish.

Every screw is supplied with an o-ring, and the series hardware list classes the part as watertight assembly screws. The material is stainless steel and the colour is black; the short description reads "1590 SS WATERTIGHT SCR BLACK".

An IP65 rating is listed on the part page. The pack holds 100 screws in a bag with a shipping weight of 0.18 lbs (0.08 kg). The 1590WMS100BK is RoHS compliant and REACH compliant, supporting equipment that must meet those material-restriction requirements.

The same watertight screw is also listed without the black finish for builds that do not need dark hardware. In most cases enclosures include all hardware needed for assembly; this pack is for replacements and spares. Because hardware packs may not be compatible with all parts in the listed series, check the enclosure's replacement parts and accessories list before ordering.