Hardware SnapNrack Rectangular Base Flange 1.5" AlMg, 172-05807 Mfr. Part # 172-05807 Diameter 1-1/2 In.
Direct Attachments SnapNrack Ultra Rail Wide Base Seam Clamp w/L-Foot & Lock, 242-05159 Mfr. Part # 242-05159
Hardware Unirac MetalX Service Nut, ES10261 Mfr. Part # ES10261 Diameter 1.26 L x 0.49 W x 0.24 H In.