What size roofing nails do i need

Roofing Nail Sizes What size roofing nails to use   Composition Shingles Comp Shingles Sheathing Thickness 3/8" 1/2" 5/8" 3/4" 3-Tab comp shingles (Bare sheathing) 1" 1" 1" 1" Dimensional comp shingles (Bare sheathing) 1" 1-1/4" 1-1/4" 1-1/4" 3-Tab comp shingles over 3 Tab comp shingles 1-1/4" 1-1/4" 1-1/4" 1-1/2" Dimensional comp shingles over 3 Tab 1-1/4" 1-1/2" 1-1/2" 1-1/2" *More than 1 layer of roofing not recommended over 3/8" Sheathing Wood Shakes(minimum 3/4 " sheathing) Wood Shakes Nail Type Minimum Length 18" Straight Split 5d Box 1-3/4" 18" and 24" Handsplit and Resawn 6d Box 2" 24" Tap...