Tek Screws For Wood Selection Guide | Hebei Wotu Fastener Manufacturing Co., Ltd.
Tek screws for wood need to match the material combination, not just the screw length. For wood-to-wood assembly, a wood screw with suitable threads is often a better fit; for fastening wood to a metal section, the point, thread form, head and coating must work with both materials.
The main purchase decision is whether you need a self-drilling point for a metal layer or dependable thread engagement in wood. Choosing the wrong type can lead to poor holding power, splitting, difficult driving or premature corrosion.
Brand: Wotu Surface: blue and white zinc plated Specifications: Chinese national standard 6#/8#/10#/12#/16#/20#, rod length 35mm~250mm full range of specifications in stock, supports nonstandard length customization Packaging: 25kg cartons, full pallets packed on wooden pallets, support neutral packaging, private-label customization
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Brand: Hengzuan Surface: color zinc plated, can be customizedblue-white zinc plated Specifications: in stock 4.8/5.5 common wire diameter, rod length 16~125mm full range of specifications, supports nonstandard customized Packaging: 25kg cartons, whole wooden pallets, support neutral packaging, private-label customization
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Brand: Wotu Surface: color zinc plated electroplating Specifications: in stock 3.5/4.0/4.5/5.0 regular wire diameter, rod length 16～80mm full range of specifications in stock, supports nonstandard length customization Packaging: 25kg cartons, whole wooden pallets
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Brand: Hengzuan Surface: blue and white zinc plated, can be customized color zinc plated, black oxide plated Specifications: Comply with GB/T15856.2-2002 Chinese national standard, in stock ST4.2/ST4.8/ST5.5 full range of specifications, length 13mm~75mm optional, supports customized nonstandard rod lengths; drilling adaptation plate thickness 0.7~6mm Packaging: 25kg export cartons, full pallets wrapped with film, supports neutral export packaging, customer private-label customization
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Brand: Hengzuan Surface: blue and white zinc plated, can be customized color zinc plated, black oxide plated Specifications: in stock 3.5/3.9/4.2/4.8/5.5 mainstream wire diameter, rod length 13mm~75mm full size range, nonstandard length can be customized as needed Packaging: 25kg export cartons, full wooden pallets wrapped with film, supports neutral export packaging, private-label customization
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Brand: Hengzuan Surface: color zinc plated, customized blue-white zinc plated, black oxide Specifications: in stock 3.9/4.2/4.8/5.5 full diameter, length 13mm~75mm full size range, supports customized nonstandard rod lengths Packaging: 25kg export cartons, full pallets wrapped with film, supports neutral export packaging, customer private-label customization
Read MoreWood fastening selection
Compare wood engagement, point style, head geometry, drive type, overall length, corrosion protection and compatibility with the installation method. A useful specification should also state whether the screw is intended for wood-to-wood or metal-to-wood fastening and identify any required pre-drilling or clearance-hole conditions.
| Criterion | What To Check | Why It Matters | Buyer Tip |
|---|---|---|---|
| Wood-to-wood or wood-to-metal fit | Confirm the wood species, mating material, and whether the screw has a sharp wood-screw point or a self-drilling point. | A screw designed for metal framing may not provide the best thread engagement in wood, while an unnecessary drilling point can complicate installation. | Ask, “Is this screw intended for wood-to-wood assembly, wood-to-metal fixing, or both?” |
| Thread form and usable length | Compare the coarse-thread section and screw length with the thickness of the parts being joined. | Thread engagement affects holding power; excessive length can break through the back of the workpiece or interfere with hidden components. | Provide the total material thickness and ask for the recommended length and minimum embedment. |
| Head style and seating | Choose between a countersunk, pan, washer, or hex head according to the required finish and clamping area. | A countersunk head can sit flush in suitable wood, while a washer-style head spreads pressure and can reduce pull-through on softer material. | Ask whether the head is intended to sit flush, remain visible, or clamp a thin panel with a washer. |
| Finish for the installation environment | Match the stated surface treatment to dry indoor use, damp areas, or outdoor exposure, and request the applicable finish details. | Moisture and surrounding materials can affect corrosion over time; a finish suitable for one environment may not suit another. | State the installation environment and ask what corrosion-protection finish is offered for it. |
| Drive recess and installation guidance | Verify the drive type and size, bit compatibility, and any guidance on pilot holes or driver settings. | A matching bit and suitable installation method help prevent recess damage, overdriving, and splitting near board edges. | Ask for the recommended driver bit and installation guidance for the specific wood and screw size. |
“Tek screw” is commonly used for self-drilling screws, but the name does not by itself confirm that a screw is suitable for wood. A self-drilling point is useful when the fastener must pass through a metal sheet before entering wood. For wood-to-wood work, a screw designed around wood-fiber engagement may provide a more suitable thread and point.
This distinction matters because the first material under the head, the thickness of any metal layer and the density of the wood all affect the required design. Ask the supplier to confirm the intended material pairing rather than selecting solely by diameter or overall length.
Start with the joint: wood to wood, metal to wood, or a wood assembly with a pre-drilled metal bracket. For metal-to-wood fastening, check whether the screw must create its own hole in the metal or pass through an existing opening. For wood-to-wood work, consider a wood-screw thread and point instead of assuming a self-drilling design is necessary.
Choose the head and drive for the finished surface and the installation tool. A countersunk head can sit flush where the material allows it, while a pan or hex-style head may suit a bracket or washer-bearing joint. Confirm the drive recess and bit fit before placing a production order; an unsuitable recess can cause cam-out and inconsistent seating.
Length should provide useful engagement in the supporting wood without allowing the point to protrude where it could interfere with the assembly. Account for the thickness of any metal, bracket, washer or clearance layer. Dense hardwood, softwood, plywood and composite board may also need different thread choices or a controlled pilot hole to reduce splitting.
Match the finish to the exposure: indoor dry assemblies have different corrosion concerns from damp rooms, exterior use or treated wood. Confirm the coating or material, compatibility with the wood treatment and the required appearance. For an enquiry, provide the wood type, the thickness and type of any metal layer, the screw dimensions you are considering, and the environment in which the joint will be used.
| Criteria | Importance | Description | Example Options |
|---|---|---|---|
| Joint type | Usually the first decision point | Wood-to-wood fastening and metal-to-wood fastening place different demands on the point and thread. A self-drilling point may help with a metal layer, but it is not automatically the best design for direct wood assembly. | A steel bracket fixed to timber may need a drill point; two timber components may be better served by a wood-thread screw. |
| Point style | High where metal, splitting or starting accuracy matters | The point controls how the screw starts, whether it can pass through metal and how it enters the wood. The wrong point can wander, over-drill, split the wood or fail to penetrate a metal layer cleanly. | A drill-style point suits suitable thin metal-to-wood fastening, while a sharper wood point may suit wood or board materials. |
| Thread engagement | Critical for holding power in the receiving material | The thread must suit the wood density and board structure. Coarse, deep threads can grip soft materials well, while dense wood or engineered board may need a different thread choice or controlled pilot hole. | A screw that holds well in softwood may strip or split a dense board if the thread and installation method are not matched. |
| Head and drive | Important for seating, appearance and installation consistency | Head shape affects whether the screw sits flush, clamps a bracket or spreads load with a washer. Drive style affects bit fit, cam-out risk and how consistently installers can seat the screw. | A countersunk head may suit a flush furniture surface; a hex or pan head may suit a bracket connection. |
| Finish and exposure | Important for damp, exterior or treated-wood applications | The coating or material should match the service environment and the wood treatment. Indoor dry use, damp rooms and outdoor exposure create different corrosion risks. | A fastener for an interior cabinet may not need the same corrosion protection as one used near moisture or treated timber. |
Related Options
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Not usually as the first choice. A self-drilling point is mainly useful when the screw must drill through a metal layer; for wood-to-wood joints, a wood screw or fiberboard screw with the right thread form often gives better holding and cleaner seating.
A self-drilling screw has a drill-style point that can create a hole in suitable metal before forming the joint. A self-tapping screw forms or cuts its own thread in a prepared hole or softer material, but it does not necessarily drill through metal by itself.
Sometimes, but the risk changes with the material. Softwood may accept a wider range of threads, while hardwood, plywood and composite boards can split, strip or bulge if the point, thread and pilot-hole practice are not suitable.
No. The screw needs enough useful thread engagement in the supporting wood, but extra length can protrude, hit another component or make installation harder without improving the joint. The total thickness of brackets, washers, clearance layers and the receiving wood should guide the length.
Confirm the metal thickness, wood species or board type, head style, drive type, coating and whether the hole in the metal is drilled by the screw or already prepared. It is also worth checking sample installation with the intended tool and torque setting before committing to a larger order.
Tell us the wood type and thickness, whether the screw must pass through metal, and the required size or coating so the application can be reviewed accurately.
