Nail & Screw Size Chart
Common nail penny sizes and wood screw gauges for framing and decking.
| Fastener | Length | Diameter |
|---|---|---|
| 6d common nail | 2" | 0.113" |
| 8d common nail | 2-1/2" | 0.131" |
| 10d common nail | 3" | 0.148" |
| 16d common nail | 3-1/2" | 0.162" |
| #6 wood screw | 3/4"-2" | 0.138" shank |
| #8 wood screw | 3/4"-3" | 0.164" shank |
| #10 deck screw | 2"-3-1/2" | 0.190" shank |
Understanding the "penny" size
Nail sizes use the "penny" system (written as "d", from the Latin denarius) -- a holdover from an old pricing convention, now just a standard length designation. Framing typically uses 10d-16d common nails for connecting dimensional lumber; smaller 6d-8d nails suit trim and lighter work. Screw sizes use a gauge number for diameter, paired with a length in inches.
Choosing fasteners for decking specifically
Deck framing and decking boards generally call for corrosion-resistant fasteners (hot-dipped galvanized or stainless) rated for exterior/ground-contact use, since untreated fasteners corrode quickly outdoors and can stain or weaken the wood around them. Pair fastener choice with your specific decking material's manufacturer guidance.
Standard published nail penny-size and wood screw gauge dimensions, common across US hardware and fastener manufacturers.
Frequently asked questions
What does the "d" in 16d nail mean?
It stands for "penny," from the old English/Latin pricing convention (denarius) -- today it's just a standardized length designation, with no connection to actual price.
What nail size is standard for framing?
10d-16d common nails are typical for connecting dimensional lumber in framing, with the specific size depending on the connection and local code requirements.
Do deck screws need to be different from regular wood screws?
Yes, generally -- deck screws and other exterior fasteners should be corrosion-resistant (hot-dipped galvanized or stainless steel) since standard fasteners corrode quickly outdoors and can weaken or stain the surrounding wood.
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