Molex Mini-Fit Sr. PCB Mount Vertical & 90° HeadersThe Mini-fit Sr. Series Headers from Molex have pre-assembled male contacts and metal PCB retention clips. This range of Mini-Fit Sr. headers are Through Hole mount and are available for different PCB thickness's as shown below For Wire to Board applications the Mini-fit Sr. Series Headers can mate with Cable Receptacle Housings, see stock number 342-4106 typical.Manufactures Part Number Key:428xx-x2x2: Tin plated contact area428xx-x2x3: Gold plated contact area428xx-x21x: 1.57 mm nominal PCB thickness428xx-x22x: 2.36 mm nominal PCB thickness428xx-x23x: 3.18 mm nominal PCB thickness428xx-x24x: 6.35 mm nominal PCB thicknessMolex Minifit Sr.™ Series