
Hex Lag Bolts
DIN 571 Hexagon Head Wood Screws for Timber & Structural Applications
VALTOR supplies hex lag bolts, also known as DIN 571 hexagon head wood screws, for heavy-duty timber fastening and structural wood applications. Featuring a hexagonal head, partial smooth shank and coarse wood thread, these fasteners provide reliable installation performance in wood construction, outdoor structures and general timber assemblies.
Product Overview
Hex lag bolts are heavy-duty wood fastening screws designed for timber and structural wood applications. Also known as DIN 571 hexagon head wood screws, hex lag screws or coach screws, they feature a hexagonal head, partial smooth shank and coarse wood thread designed to provide strong engagement in wood materials.
Compared with standard wood screws, hex lag bolts provide higher installation torque through the external hex head design, allowing installation with common wrench tools. The deep coarse thread profile improves holding performance in timber and wood-based materials, while the pointed tip supports correct starting and penetration.
VALTOR supplies 304 stainless steel hex lag bolts and 316 stainless steel lag screws for outdoor and corrosion-sensitive wood applications. Zinc plated carbon steel hex head wood screws are available for general fastening requirements. Only realistic material and finish combinations are presented for this product.
Typical applications include timber structures, outdoor wooden assemblies, landscaping projects, construction components and exterior wood applications. As a hex lag bolts supplier and custom hex lag screws manufacturer, VALTOR can evaluate diameter, length, material and packaging requirements according to project needs.
Technical Specifications
Reference fields for DIN 571 wood screw purchasing; exact dimensions should be confirmed against the project requirement.
Wood Fastening Design
Hex lag bolts combine a high-torque hex head, coarse thread profile and structural wood engagement capability.
Surface Finishes
Only product-appropriate standard material and finish options are shown.
Other materials or finishes are not listed as standard and require specific customer evaluation.
Custom Hex Lag Bolt Solutions
VALTOR supports customized hex lag bolts according to diameter, length, material, finish and packaging requirements. Customers can provide drawings, samples or application requirements for evaluation.
Quality & Documentation
Documentation can be provided to support customer verification and traceability.
Availability & Delivery
Availability, sample feasibility and lead time depend on size, material and packaging.
Packaging & Private Label
Standard and customized packaging options for B2B supply.
Custom branded packaging is available for qualified customers after proper brand authorization.
Applications
Heavy-duty wood screws for timber connections, outdoor structures and structural wood fastening.

Hex lag bolts for timber construction are commonly used for timber frames, structural wood connections and heavy-duty wood assemblies requiring reliable fastening.
Suitable for outdoor structures including decks, pergolas, fences and other timber constructions where corrosion resistance may be required.
Used in wooden landscaping structures, outdoor installations and timber-based construction projects.
Applied in wooden building components, structural assemblies and construction-related timber connections.
316 stainless steel hex lag bolts can be considered for selected exterior and coastal wood applications where improved corrosion resistance is required.
Frequently Asked Questions
What are hex lag bolts used for?
Hex lag bolts are mainly used for timber construction, structural wood connections and heavy-duty wood fastening applications.
What is the difference between hex lag bolts and standard bolts?
Hex lag bolts are DIN 571 style wood screws designed to install directly into wood materials using coarse threads, while standard bolts normally require a nut for fastening.
Why choose stainless steel hex lag bolts?
Stainless steel provides improved corrosion resistance for outdoor and moisture-exposed wood applications.
Can hex lag bolts be customized in different sizes and materials?
Yes. Diameter, length, material and packaging can be customized according to customer requirements.
Can samples be provided before bulk production?
Yes. Samples can be arranged depending on size, material and production requirements.
Related Products
Share the required DIN 571 size, material, timber application or packaging requirements with VALTOR for evaluation and quotation.





