Hammond 431612 150 mm Black Anodized Extruded Aluminum Sink Box

The 431612 is a 90 x 51 x 150 mm extruded aluminum "Sink Box" enclosure in a black anodized finish, built for OEM engineers and electronics designers who need to mount a small printed circuit board or chassis horizontally in a compact, conduction-cooled housing. At 150 mm long, the 431612 sits in the middle of the 90 mm wide family, between the 100 mm and 200 mm lengths, and is the black anodized twin of the clear 531612.

The body is formed from a single, hollow aluminum extrusion, which gives the unit high strength and simplifies assembly. Fins run across the entire top of the extrusion and act as a heat sink, while aluminum end panels close each end and molded black plastic bezels protect the end panels. The series is a British design originally sold under the West Hyde Enclosures Ltd. name.

Inside, numerous slots on both shorter sides accept a P.C. board or chassis; the manufacturer drawing marks this size for a 85mm wide PCB. Three T-slots (one in the top taking an M3 half-nut, two in the bottom taking M4 half-nuts) offer an alternative way to mount chassis or components that need conduction cooling. Two exterior T-slots on the bottom, also for M4 half-nuts, allow wall brackets, a belt attachment or a connection to another enclosure.

The purchased assembly includes the extrusion, 2 end plates, 2 bezels and 8 screws (#4 x 1/2 pan head), with a recommended cover screw torque of 2.5-3.5 lbf-in (30-40 cN-m). The 431612 is rated IP54, is RoHS and REACH compliant, ships shrink wrapped at 2.91 lbs (1.32 kg), and can be factory modified (milling, drilling, printing); solid models are available in STEP or IGES.