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Stainless Steel Square-Drive Flat Head Screws for Wood and Composite Wood
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Fasten decking and fencing outdoors with screws that won't rust. They're often used with chemically treated wood, such as ACQ-treated (arsenic-free) lumber. Also known as deck screws, their trumpet shape spreads pressure to prevent splitting, while the flat head limits snags. The square drive handles more torque than slotted and Phillips drives.
The screw drill tip acts as a built-in pilot, though pilot holes are still recommended near edges to avoid splitting. Length is measured from the top of the head.
18-8 Stainless Steel—The choice for wet and outdoor environments, these screws resist rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
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Lg. | Dia. | Ht. | Drill Bit Size | Flat Head Profile | Approx. Threads per In. | Threading | Tapping Method | Tapping Screw Type | Pkg. Qty. | Pkg. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
18-8 Stainless Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
No. 10 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3 3/4" | 0.344" | 0.189" | 3/32" | Standard | 8 | Partially Threaded | Thread Cutting | 17 | 25 | 000000000 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Drywall Screws for Wood
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Hang drywall to wood framing. These screws have a sharp point that penetrates drywall and a curved neck that sinks in without tearing the paper surface.
Zinc-Yellow-Chromate-Plated Steel—Zinc-yellow-chromate-plated steel screws are corrosion resistant in wet environments.
Length—Length is measured from the top of the head.
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Lg. | Dia. | Ht. | Size | Style | Approx. Threads per In. | Threading | Min. Thread Lg. | Pkg. Qty. | Pkg. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Zinc-Yellow-Chromate-Plated Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
No. 10 Screw Size | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3 3/4" | 0.363" | 0.039" | No. 2 | Phillips | 9 | Partially Threaded | 2 1/2" | 25 | 000000000 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Steel Phillips Flat Head Drilling Screws for Joining Wood to Sheet Metal
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With Cutting Wings |
Join wood to sheet metal by drilling, tapping, and fastening in one go. These screws have a self-drilling tip to clear the way while their threads tap into the material. The flat head sits flush, so you won't need to worry about snags. The Phillips drive handles enough torque to drive into most kinds of wood without slipping.
Length is measured from the top of the head.
Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
Cutting-Winged Body—These wings create a tight hold by preventing screw threads from engaging until they reach the sheet metal. Then, the wings snap off so the screw can switch from drilling through wood to fastening into metal.
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Lg. | Dia. | Ht. | Drill Point Size | Drill Tip Lg. | For Wood Thk. Range | For Metal Thk. Range | Body Type | Flat Head Profile | Threading | Tapping Method | Pkg. Qty. | Pkg. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Zinc-Plated Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1/4"-20 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3 3/4" | 0.472" | 0.153" | No. 4 | 1/2" | 0.75" to 2.75" | 0.11" to 0.375" | Cutting Wings | Standard | Fully Threaded | Thread Forming | 5 | 000000000 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
