Hammond 1591MFLBK 85x56x26mm Black Flame-Retardant ABS Flanged-Lid Box

The 1591MFLBK is a black low-profile 1591M plastic enclosure with wall-mounting flanges molded into the lid. It suits electronics builders and panel installers who want a shallow housing they can fasten directly to a surface while holding a vertically mounted PC board in the card guides molded into every side wall, sized for 1.5 mm (0.062 in) boards.

It is molded from easy-to-machine flame retardant ABS carrying a UL94 V-0 flammability rating. Lap joint construction between box and lid protects against dust and splashing water, and the enclosure is designed to meet IP54. The lid is held by M3 x 10 mm Phillips machine screws threading into integral brass bushings, which makes repeated opening and reassembly practical; black versions ship with black screws.

Nominal size is 3.34 in x 2.2 in x 1.03 in (85 mm x 56 mm x 26 mm). The drawing gives an inside length of 78.63 mm [3.096 in], inside width of 51.83 mm [2.041 in] and inside height of 20.90 mm [.823 in], with a guide height of 15.90 mm [.626 in] and a slot width of 2.07 mm [.082 in]. With the flanged lid the overall length grows to 110.08 mm [4.334 in], with mounting holes spaced 98.20 mm [3.866 in] apart.

Each 1591MFLBK assembly includes the box, lid, 4 cover screws and pre-installed brass inserts; recommended cover screw torque is 35.5-42.5 ozf.in (25-30 cN.m). Shipping weight is 0.13 lbs (0.06 kg), and the part is RoHS and REACH compliant. The inside of the lid accepts #4 self-tapping screws for mounting a board to the lid. For horizontal board mounting, 1591Z card adaptors are offered.