Hardware QuickBOLT 1/4" x 3" Hex Head Solar Mounting Screws Stainless Steel, 17556 Mfr. Part # 17556 Diameter 1/4 In.
Lag & Hanger Bolts Unirac 5/16"x4.5 Lag Bolt & Structural Screw SS , 030045C Mfr. Part # 030045C Diameter 5/16 In. Size 5/16 x 4-1/2 In.