ST Fastening #17 x 1-1/2" Tapping Steelbinder Metal Roofing Screw - Electro-Galvanized - Pkg 250 Adjustable 2 Leg - Grade 100 Not sure which shackle size

Not sure which shackle size is right for your application

Crosby® 5 Ton Bolt Type Anchor Shackles

So for a 8x19 class

Self-Drilling Point: Cuts through steel without pre-drilling

Bonded EPDM Washer: Helps create a watertight seal

ST Fastening #17 x 1-1/2" Tapping Steelbinder Metal Roofing Screw - Electro-Galvanized - Pkg 250 Adjustable 2 Leg - Grade 100 Not sure which shackle sizeST Fastening #17 x 1 1 2" Tapping Steelbinder Metal Roofing Screw Electro Galvanized Pkg 250 Designed for dependable metal to metal fastening, this ST Fastening #17 x 1 1 2" Tapping Steelbinder screw delivers strong panel attachment and consistent clamping performance. The electro galvanized finish enhances corrosion resistance in standard exterior environments. Packaged 250 per box to support efficient installation on commercial and agricultural