Stainless Steel Structural Timber Screws
Heavy-Duty Countersunk Torx Screws for Structural Wood & Timber Connections
Stainless Steel Structural Timber Screws are long, robust wood fasteners for heavy timber and engineered-wood connections. The primary VALTOR geometry combines a countersunk head, internal six-lobe drive, smooth upper shank, coarse partial timber thread and sharp cutting point.
Product Overview
These larger-diameter, long structural timber fasteners are distinct from traditional furniture Wood Screws, slender Chipboard Screws and hex-head Coach Screws. Their countersunk six-lobe head, smooth partial shank, deep coarse lower thread and cutting point support heavy wood-to-wood assembly.
The thread primarily engages the lower member while the smooth shank passes through the upper member. As the screw advances, this geometry can draw the members together. The six-lobe drive supports positive power-tool engagement, and the cutting point assists starting according to the actual product and timber condition.
Specify diameter, overall length, thread and smooth-shank lengths, head geometry, drive size, point type, 304/A2 or 316/A4 grade, timber type, member thickness, application, required testing or approval, quantity and drawing/sample.
Technical Specifications
Partial Thread, Timber Pulling Action & Length Selection
304 / 316 Stainless Steel & Size Options
Thread, Point & OEM Manufacturing
Diameter, L, thread length, smooth-shank length, head/countersunk geometry, drive, pitch, thread depth and core diameter.
Sharp point, cutting point/slot, serrated start or special lead thread only where actually produced; milling ribs or nibs only where specified.
Send size, thread length, grade, head, drive, point, timber type, member thickness, embedment/design requirement, application, approvals, quantity and drawing/sample.
Boxes, export cartons, pallets, protective packaging for long screws, customer labels, part numbers and authorized private label.
Timber Installation & Quality Control
Inspection may cover diameter, overall/thread/shank lengths, head form, six-lobe geometry, thread pitch/depth/continuity, point symmetry, long-shank straightness and stainless grade. Representative installation or structural testing is performed only where required and reported only when actually completed; no universal torque, load, ETA or approval data is claimed.
Applications
Long stainless fasteners for engineered heavy-timber and exterior wood connections.
Long structural screws connect compatible frame, roof and heavy-wood members according to engineered joint requirements.
Large-diameter partial-thread geometry for compatible beam, post and heavy timber fastening.
Supply for engineered timber assemblies where geometry, spacing and validated design data match the project.
304/A2 and especially 316/A4 options support corrosion-conscious outdoor timber procurement.
Drawing-based diameter, length, thread, point, drive and stainless-grade configurations.
Frequently Asked Questions
What is the difference between Structural Timber Screws and normal Wood Screws?
Structural Timber Screws are generally larger, longer and construction-oriented, commonly using six-lobe drives, engineered coarse threads, partial-thread geometry and specialized cutting points.
Why are many Structural Timber Screws partially threaded?
The lower thread engages the receiving timber while the smooth upper shank passes through the upper member, helping draw the members together when thread length matches the joint.
Do Stainless Steel Structural Timber Screws require pilot holes?
It depends on diameter, length, timber density/species, edge/end distance and product design. Pre-drilling is especially important to consider in dense hardwood, long or large screws and near timber edges.
Should I choose 304 or 316 Stainless Steel Timber Screws?
304/A2 is widely used for general corrosion-resistant timber construction; 316/A4 offers increased resistance for more demanding exterior, humid and coastal environments. Timber treatment must also be considered.
What information is required for a Structural Timber Screw quotation?
Provide diameter, overall/thread lengths, stainless grade, head, drive, point, timber type, upper-member thickness, connection application, quantity and any testing, approval, drawing or project requirement.
Related Products
Share diameter, overall and thread lengths, stainless grade, timber, joint geometry, point, driver, testing requirement, drawing and quantity with VALTOR.