Best Winged Self-Drilling Screws for Wood and Metal Projects
Winged self-drilling screws are designed to fasten wood to metal by clearing a path through the wood before the drill point engages the metal. For wood-to-metal work, the U-Turn Fasteners #10 screws suit projects with specified wood and metal thicknesses, while Dura-Screws offer a longer, larger-diameter option. Power Pro’s winged-point screws are intended for metal-to-metal fastening, and FMhotu screws are a bulk option for wood over mild steel or aluminum.
| Product | Best for | Key detail |
|---|---|---|
| U-Turn Fasteners #10 | Specified wood-to-metal thicknesses | TEK 3 point and W.A.R. coating |
| Dura-Screws #14 | Longer, multi-material fastening | Reams wood; no predrilling for listed materials |
| Power Pro #8 | Thin-gauge metal-to-metal | ¾-inch length, winged point |
| Power Pro #12 | Metal-to-metal connections | 1-inch length, winged point |
| FMhotu #10 | Bulk trailer-deck work | Maximum listed metal thickness is about ⅛ inch |
U-Turn Fasteners #10 Reamer Tek Screws
These #10-24 screws have a flat Torx/star head and reamer wings for attaching wood to metal. The listed application range is ¼ to ¾ inch of wood over metal 0.035 to 0.176 inch thick. The product also specifies a TEK 3 drill point and W.A.R. coating, with a stated salt-spray resistance exceeding 1,000 hours.
Best for: Wood-to-metal projects that fall within the stated thickness range and need a flush-style flat head. The coating detail may be useful when corrosion exposure is a concern. Limitation: Check the material thickness before choosing; these stated dimensions do not cover every metal assembly.
Dura-Screws #14 Multi-Material Screws
Dura-Screws are #14 by 2¾ inches, with a flat Torx/star head and a winged design that reams a hole through wood to prevent the threads from engaging too early. The listed features say predrilling is not required for wood, drywall, plastic, or metal up to 20 gauge; concrete and masonry require predrilling. The product is described as rust resistant and suitable for several material types.
Best for: Buyers needing a longer screw for wood-to-steel fastening or a fastener described for multiple materials. Limitation: The listing does not provide a precise maximum wood depth or metal thickness for this size beyond the stated 20-gauge metal limit.
Power Pro #8 Winged-Point Screws
This box contains 180 zinc-plated steel screws measuring #8 by ¾ inch. Power Pro describes them as metal-to-metal fasteners for sheet metal or thin-gauge metal. The winged point is intended to speed driving, and the product features an exterior ceramic coating described as offering rust and corrosion protection.
Best for: Metal-to-metal fastening in sheet or thin-gauge metal where a shorter screw is appropriate. Limitation: These are not the clearest choice for wood-to-metal fastening; the product description focuses on metal-to-metal use.
Power Pro #12 Winged-Point Screws
These #12 by 1-inch screws are made from zinc-plated steel and have a hex washer head. Their winged point is designed for metal-to-metal applications, including sheet metal and thin-gauge metal. The listed exterior ceramic coating is intended to resist rust and corrosion.
Best for: Metal-to-metal jobs that call for a #12 screw and hex washer head. Choose this over the #8 version when the larger listed screw size better suits the application. Limitation: The listing does not give a specific metal-thickness capacity, so verify the drill-point suitability for the material.
FMhotu #10 Trailer Deck Screws
This bulk pack contains 576 #10 by 2½-inch screws and T25 star bits. The listing describes them for fastening wood to mild steel or aluminum, with a maximum wood depth of about 1¾ inches and a maximum metal thickness of about ⅛ inch. It also notes that predrilling the wood is recommended and warns that the screws will not self-drill through thicker or non-soft material.
Best for: High-count trailer-deck or similar wood-to-metal projects using soft steel or aluminum within the stated limits. Limitation: Do not assume the screw will drill through thicker metal; the listing specifically recommends predrilling the wood.
Buying Guide: How To Choose Winged Self-Drilling Screws
Are the screws for wood-to-metal or metal-to-metal?
Start with the materials being joined. Reamer or winged screws for wood-to-metal clear the wood before their drill point reaches the metal. Power Pro’s two options are described for metal-to-metal use, so they are better matches for sheet or thin-gauge metal assemblies than for fastening wood to metal.
What thickness can the screw handle?
Compare both the wood depth and metal thickness with the product’s stated limits. U-Turn lists a wood and metal range, while FMhotu gives maximum approximate depths and warns about thicker metal. Screw length alone does not indicate how much material can be fastened because part of the screw length may not be usable thread.
Which head and drive style should you choose?
Flat heads are intended to seat flush when installed as described by the product. Torx/star drives are specified on the U-Turn and Dura-Screws products; FMhotu includes T25 bits. Power Pro’s #8 has a wafer head, while its #12 has a hex washer head. Confirm that the head profile and drive tool suit the assembly.
Does coating matter for outdoor or corrosive conditions?
Coatings differ between products, and the listings use different descriptions. U-Turn identifies a W.A.R. coating and states salt-spray resistance; Dura-Screws are described as rust resistant; Power Pro lists an exterior ceramic coating. Match the coating information to the environment rather than assuming all self-drilling screws offer the same protection.
Frequently Asked Questions
What do the wings on a self-drilling screw do?
On wood-to-metal screws, wings ream a larger path through the wood so the threads do not engage it prematurely. The wings may break away when they reach the metal.
Do winged self-drilling screws always eliminate predrilling?
No. Requirements depend on the material and screw. FMhotu recommends predrilling the wood, and Dura-Screws specify predrilling for concrete or masonry.
Can I use a wood-to-metal screw on thick steel?
Only if its drill-point capacity supports that metal thickness. Check the product specifications; FMhotu, for example, lists about ⅛ inch maximum and warns against thicker or non-soft material.
Are all winged self-drilling screws corrosion resistant?
No. Coating and corrosion claims vary by product. Review the specific finish and its stated application before selecting screws for exposed or corrosive conditions.