Hardware Roof Tech 45mm Hex Bolt w/ Flanged Nut Set, RT2-04-BN45L-US Mfr. Part # RT2-04-BN45L-US Size 1-3/4, 45 In., mm
Hardware QuickBOLT 1/2" x 4" Roof Screw HEX Driver for 5/16 HWH Screws, 17655 Mfr. Part # 17655 Diameter 1/2 In.