Structural
Wood screws for everyday carpentry
Choose fasteners for shelving, shop fixtures and everyday wood assembly by the joint, the stock thickness and the expected conditions.
Browse project fasteners Jump to installation stepsPlan the assembly before the first cut
Choose stock for the job
Start with the dimensions and use of the piece. Plywood, solid wood and engineered boards require different edge clearances, head seating and pilot-hole details.
Match the head and length
Work from the actual thickness of both pieces. Select enough engagement for the intended joint while keeping the screw point clear of exposed faces and services.
Find the right fastener
Compare fasteners by material and connection before you choose a size.
Open the fastener calculatorRelated products
MultiGrip™
Multi-purpose screws for general wood assembly and everyday carpentry.
Tools & accessories
Choose the tools that match your materials and fastening system.
90° Clamping Square Kit
Hold box joints and frames square while you fasten them.
$99.98
View accessory
Depth-Stop Countersink Set
Test the pilot and head recess on scrap where the fastening detail calls for it.
$24.99
View accessory
83-Piece S2 Bit & Socket Set
Choose a bit or socket that fits the fastener head on the job.
$39.99
View accessoryMake and repeat a sound wood joint
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Sketch the piece and list the cuts
Mark each joint and its purpose. Obtain a specified connection for load-bearing work.
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Measure and dry-fit
Mark the finished edges and assemble the parts without fasteners. Check the fit against the actual space.
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Support the work
Clamp parts securely and use the protection required for cutting or drilling. Verify clearance on both sides of the joint.
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Test the joinery and fastener
Use an offcut to trial the pilot, head seating and screw length before driving into the assembled piece.
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Assemble and finish
Check for gaps, splitting or protruding points. Sand and finish exposed surfaces once the assembly is square and stable.
Use a joint detail suited to the load. General wood screws do not replace specified structural connectors.
A practical screw for compatible wood assemblies
Use MultiGrip™ where the wood joint and expected exposure suit its product specification. Follow the approved hardware detail for structural work.
Check the connection before you build
Technical planning and quantities
Review connection details, tools, product sizes and a worked quantity example.
Sizes, quantities & full instructions
Make the joint clear before you make the cut.
About this guide
For ordinary, non-structural woodwork, the useful starting point is simple: what passes through, what receives the screw and what must remain visible. Plan each joint, test it on scrap, then repeat the result.
Technical planning referenceSizes & project data
- MultiGrip diameter/length choices
- #8: 1-1/4, 1-1/2, 1-5/8, 2 in. · #9: 2-1/2, 3 in. · #10: 2-1/2, 3, 3-1/2, 4, 5 in.
- VERTEXA catalog · View product sizes
- Geometric reach
- R = nominal screw length − total thickness passed through. R includes the tip; it is not the effective threaded embedment.
- Project input
All technical parameters · 6
For a repeatable wood joint, calculate reach and clearance before testing the drive. This guide addresses ordinary non-structural assembly; load-bearing joints require a separate approved connection design.
Read the evidence: VERTEXA catalog = listed product information. Material reference = requirements for the named material/system. Worked example = assumed inputs and arithmetic. Project input = a value to verify for your job.
| Parameter | Value / method / applicability | Basis & reference |
|---|---|---|
| MultiGrip diameter/length choices | #8: 1-1/4, 1-1/2, 1-5/8, 2 in. · #9: 2-1/2, 3 in. · #10: 2-1/2, 3, 3-1/2, 4, 5 in. | VERTEXA catalogView product sizes |
| Geometric reach | R = nominal screw length − total thickness passed through. R includes the tip; it is not the effective threaded embedment. | Project input |
| Example joint | 2 in. screw − 3/4 in. first piece = 1-1/4 in. geometric reach. | Worked example |
| Point clearance | With a 1-1/2 in. receiving member, 1-1/2 − 1-1/4 = 1/4 in. of geometric cover remains. | Worked example |
| Joint closure | Clamp mating faces. A clearance hole through the first piece may be required by the chosen screw/joint detail to prevent jacking. | Project input |
| Grain and position | Pilot, edge distance and end distance depend on species, density, moisture and load direction; determine them before repeating a pattern. | Project input |
Gather your tools
Tape, square and pencil; clamps and a stable bench; saw; drill/driver and matched Torx bit; appropriate pilot/countersink bits; detector when fixing near services; eye, hearing and dust protection.
Choose the right size
MultiGrip sizes include #8 × 1-1/4", #8 × 2" and longer #9/#10 options. Check actual layer thickness, required engagement, head seating and tip clearance. A 2" screw through 3/4" stock projects about 1-1/4" beyond that first piece; that is a geometry example, not a strength specification.
Compare the relevant productsStep 1: Define what the joint must do.
Draw the pieces and label which face receives the head. Decide whether the work is decorative, assembly, structural or safety-critical. Structural framing, guards and overhead loads need an approved connection detail before selecting screws.
- Tools for this stepTools
- Sketch, pencil, square and tape.
- Size & quantity checkSize / count
- Record first-piece thickness and receiving depth in inches.
Step 2: Choose material, head and length.
Match the fastener finish to indoor, treated wood or exposed service. Check the head will seat without pulling through. Add the layer being passed through to the required engagement and allow room before the reverse face.
- Tools for this stepTools
- Tape, product data and matching bit.
- Size & quantity checkSize / count
- Compare the required length with #8 × 1-1/4" or #8 × 2" catalog options.
Size the joint in section
Drawing explanation & numbered notes
The calculation uses measured stock thickness. Nominal “2-by” lumber is not 2 in. thick; measure the actual piece.
- First piece. The head and any countersink establish where the length is measured from.
- Receiving piece. Check the available thread engagement and distance to the reverse face.
- Point clearance. Keep the point and driver path clear of hands, cables and the finished face.
Step 3: Cut accurately and clamp the joint.
Make clean mating faces and support both pieces on a stable bench. Align to the drawing and clamp before drilling. Keep fingers away from the planned point exit and driver path.
- Tools for this stepTools
- Saw, supports, square and clamps.
- Size & quantity checkSize / count
- Count the actual number of repeat joints before starting production.
Step 4: Pilot and test on representative scrap.
Use the wood and fastener instructions to choose a pilot, especially for dense wood, narrow stock and ends. Test head depth with a low clutch setting. Check the point remains inside the receiving piece and that the joint closes correctly.
- Tools for this stepTools
- Offcuts, specified pilot, driver and matched bit.
- Size & quantity checkSize / count
- Use the same screw size and material as the final assembly.
Resolve the fixing pattern before repetition
Drawing explanation & numbered notes
A two-screw layout is shown to explain spacing variables. The drawing does not assign a structural screw pattern.
- End distance e. Measure from the member end to the fastener center along the grain.
- Edge distance a. Measure from the side edge to the fastener center.
- Spacing s. Measure center to center. Use the joint’s required values, not the size of the screw head.
Step 5: Repeat the approved sample and count.
Mark the fixing pattern, drive in line and stop at the tested seating depth. Recheck alignment as clamps are moved. Sort unlike sizes into clearly marked trays so they are not mixed during repetitive work.
- Tools for this stepTools
- Pencil, driver, clamps and labeled trays.
- Size & quantity checkSize / count
- 20 joints × 2 planned screws = 40; add 10% for an example order of 44.
Step 6: Inspect and finish the assembly.
Check for proud heads, splits and exposed tips on all sides. Replace damaged fasteners with an approved repair, then sand or finish as needed. Open the calculator if you want help converting the joint count into packs.
- Tools for this stepTools
- Light, straightedge and calculator.
- Size & quantity checkSize / count
- Record size and finish for future repairs. A 100-piece Handy Pack covers the 44-screw example.
Work through the numbers
Inches for connection dimensions. Feet only where shown. Round piece and pack counts up; never round required engagement down.
Compare two available lengths
1-1/2 − 3/4 = 3/4 in. reach
2 − 3/4 = 1-1/4 in. reach
Assumptions & calculation notes
The longer screw adds 1/2 in. of reach, but also moves the point 1/2 in. closer to the reverse face. A longer catalog option is not automatically a better joint.
Order repeat joints
20 joints × 2 planned screws = 40
ceil(40 × 1.10) = 44
Assumptions & calculation notes
Change the per-joint count to the real assembly detail. Count different lengths separately.
Inspect before you cover or load it
| Check | Accept when | If it fails |
|---|---|---|
| Test joint | Faces close without splitting or jacking. | Revise pilot/clearance holes and clamp the work. |
| Drive | Correct bit fully engaged; no damaged recess or overdriven head. | Replace the bit/fastener and reset the clutch. |
| Use class | Assembly is within this non-structural scope. | Use an approved connection detail for structural or safety-critical work. |
Know how much to order.
Takeoff example: 20 ordinary joints × a planned 2 screws = 40 screws; with 10% extra, 44. Calculate each screw size separately rather than combining unlike joints.
Not sure how the numbers work? Use this quantity calculator, or open the full size & selection calculator.
Open size & selection calculatorInstallation references & project-specific requirements
These resources explain general installation principles. Use the current instructions for your exact material, fastener and assembly. Referencing another manufacturer does not imply VERTEXA product approval or compatibility.
VERTEXA product listing — deckpro-exterior-wood-screws
Catalog options checked 2 November 2026. Worked examples are original arithmetic with stated assumptions. Material references apply to their named systems; they do not certify VERTEXA compatibility or capacity. Use the current issue for the exact assembly and local requirements.
Project questions
Where should I start in the range?
MultiGrip is the multi-purpose starting point for general wood assembly and carpentry. Check the exact material and connection before choosing a size.
When should I look at a different family?
Consider CabiMax for cabinet-specific fixing points, FinishPro for discreet trim, FrameMax for specified structural joints and the relevant DeckPro system for decking.
Find your fastener
Start with your materials and the connection you need to make.
Open the fastener calculator