The SC1553WB100BK is a package of 100 black M3 x 18mm stainless steel screws, listed by Hammond as watertight assembly screws for the 1553W series. It is intended for technicians and OEM builders who maintain sealed 1553W enclosures and need to replace the lid fasteners with the specified part.

The Small Case Hardware ordering table classes this item as Watertight Assembly Screws and describes it as "M3 x 18mm stainless steel screws, black". The part page short description is "SC501SSBK - PKG OF 100 SCREWS", which is the reference printed on the part record.

The listed pack size is 1.5 in x 2.5 in x 0.75 in (38 mm x 64 mm x 19 mm) and the shipping weight is 0.05 lbs (0.02 kg). A 100-count pack gives plenty of spares for servicing a fleet of sealed enclosures.

Hammond enclosures normally ship with all the hardware required for assembly, so the SC1553WB100BK is sold for replacement. 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 the 1553W enclosure part page before ordering. For the longer M3-0.5 x 20mm watertight screw listed for the same series, see SC1553WC100BK.

The pack is RoHS compliant and REACH compliant.