Hardware QuickBOLT 1/2" x 4" Roof Screw HEX Driver for 5/16 HWH Screws, 17655 Mfr. Part # 17655 Diameter 1/2 In.
Lag & Hanger Bolts K2 Systems MiniRail JF3 25mm Screw w/ EPDM, 4000672 Mfr. Part # 4000672 Size 6x32 mm