Hot dipped galvanized or stainless steel with 1/4 inch head; nails must be long enough to penetrate 1 1/2 inches in studs; ring shank or thread shank nails provide increased holding power and must penetrate studs at least 1 inch; siding nails should have blunt points to reduce splitting of the siding.
| Nail Sizes for Wood Siding Over Sheathing | ||
| Siding/Sheathing Combinations | Recommended Nail Length | |
| (Use wood siding nails) | (Smooth Shank) | (Ring Shank) |
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| 3/4" siding plus 1/2" sheathing | 10d (3") | 8d (2 1/2") |
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| 3/4" siding plus 3/4" sheathing | 13d (3 1/4") | 9d (2 3/4") |
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| 3/4" siding plus 1" sheathing | 16d (3 1/2") | 10d (3") |
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