The 1590NFBK combines the 1590N enclosure size with a welded flanged bottom plate and a satin black painted finish. It is intended for integrators and OEM designers who need to surface-mount a black metal electronics box, with the flange bringing the overall length to 146.05 mm [5.750"].

Construction is diecast aluminum alloy, tough yet easy to machine, painted with tough polyester powder paint for a lasting finish even after machining. Black screws are included to enhance appearance. Internal ribs guide P.C. boards up to 112.24 mm by 56.34 mm, and the side walls have a draft angle of 2 degrees or less. Lap joint construction protects against dust and splashing water, giving an IP54 rating.

The part page lists 4.75 in x 2.61 in x 1.42 in (121 mm x 66 mm x 36 mm); the drawing shows an overall height of 41.50 mm [1.634"] and inside dimensions of 113.71 mm [4.477"] by 57.81 mm [2.276"] by 35.20 mm [1.386"]. Shipping weight is 0.46 lbs (0.21 kg).

The assembly includes box, lid and 4 cover screws (M3.5x0.6), with a recommended torque of 50-55 cN.m [71-78 ozf.in], or 25-30 cN.m [36-43 ozf.in] with a gasket. The 1590NGASKET kit is listed for this size and 1590WNFBK is the black water-tight counterpart. RoHS and REACH compliant.