SPEC Toolbox Product Integrations

The Fastest Way To Design ESSVE Products

About ESSVE

For over 50 years, ESSVE has been a cornerstone of the Nordic fastening market, delivering specialized solutions for timber construction. With the launch of ESSVE TIMBR TECH, the company has introduced a premium range of timber fasteners and technical services specifically engineered to meet the demands of the rapidly growing mass timber industry. Their focus centers on providing high-quality, third-party verified components that ensure structural integrity and efficiency in large-scale wood projects.

ESSVE’s commitment to precision is reflected in their extensive range of wood screws, all of which are covered by European Technical Assessments (ETAs). These products are developed to remain fully compliant with Eurocode-based design, offering engineers and builders the reliability required for modern mass timber applications. By prioritizing technical excellence and safety, ESSVE continues to drive innovation in structural wood fastening.

The partnership between ESSVE and SPEC Toolbox provides design engineers with a streamlined workflow for specifying high-performance fasteners. By integrating their ETA-certified products into the platform, ESSVE ensures that engineers can fully utilize verified performance data to optimize their designs. This collaboration marks the first step in a long-term commitment to providing advanced digital tools and precision-engineered products to the mass timber community, fostering excellence from the design phase to on-site execution.

ESSVE Platform Updates

Recent Product Updates

The Fastest Growing Platform for Timber Specification

Release 2.1.10 New Composite Systems: Timber-Concrete Composites & Ribbed Deck Calculators.

Release 2.1.10 New Composite Systems: Timber-Concrete Composites & Ribbed Deck Calculators.

Release 2.1.1 – CLT to Steel Beam Connection Details, Dowel/Bolt Updates, Screw Filtering & More!

Release 2.1.1 – CLT to Steel Beam Connection Details, Dowel/Bolt Updates, Screw Filtering & More!

Release 2.1.2- USA and Canada Beta Version

Release 2.1.2- USA and Canada Beta Version

Release 2.1.3 – Focus on Perpendicular to Grain Compression

Release 2.1.3 – Focus on Perpendicular to Grain Compression

Release 2.1.4 – Fire Design!

Release 2.1.4 – Fire Design!

Release 2.1.5 – New Bracket Calculator Category

Release 2.1.5 – New Bracket Calculator Category

Release 2.1.6 – Major Updates & New National Annexes

Release 2.1.6 – Major Updates & New National Annexes

Release 2.1.7 – Screw Connections

Release 2.1.7 – Screw Connections

Release 2.1.8 – Analysis & One Page Summaries!

Release 2.1.8 – Analysis & One Page Summaries!

SPEC Toolbox Release!

SPEC Toolbox Release!

Products Integrated

Explore the ESSVE Integrated System with CLT Toolbox, a game-changing solution for modern construction that boosts efficiency and precision. Its intuitive interface allows architects and builders to seamlessly integrate ESSVE products for enhanced performance and sustainability.

ScrewsScrews
Screw Family Thread Type Head Type Diameter Length Service Class Specification
ESSDRIVE – Countersunk head – Partial thread – CorrSeal coating Partially Threaded Countersunk Head 6 mm & 8 mm 60-300 mm SC1, SC2, SC3 Hardened steel; patented point for quick start; head with cutting grooves to minimize splintering; additional milling thread on screws ≥70mm to facilitate installation.
ESSDRIVE – Countersunk head – Partial thread – Electroplated zinc Partially Threaded Countersunk Head 6 mm 40-150 mm SC1 Hardened steel; patented head shape for clean countersinking; milling grooves under the head; additional milling thread on screws ≥70mm.
ET-T – Cylindrical head – Double thread – CorrSeal coating Double Thread Cylindrical Head 6,5 mm & 8,2 mm 65-330 mm SC1, SC2, SC3 Hardened carbon steel; Double Thread (different pitches for high clamping force); cylindrical head for discreet/neat finish; fiber cut in the tip to reduce torque and prevent splitting.
HF (HEX) – Hexagon head with flange – Partial thread – CorrSeal coating Partially Threaded Hexagon Head with Flange 6 mm, 8 mm & 10 mm 50-240 mm SC1, SC2, SC3 Hardened carbon steel; Hexagonal head with integrated flange; two fiber cuts (one at the tip, one after the thread on longer screws) for low drive-in torque.
W (WAF) – Washer/wafer head – Partial thread – Stainless steel A4 Partially Threaded Washer/Wafer Head 6 mm, 8 mm & 10 mm 70-150 mm SC1, SC2, SC3 Stainless Steel AISI 316; Large head diameter for extremely high clamping force; 1 fiber cut in the tip; ideal for highly corrosive environments (coastal/industrial).
W (WAF) – Washer/wafer head – Partial thread – CorrSeal coating Partially Threaded Washer/Wafer Head 6 mm, 8 mm & 10 mm 40-320 mm SC1, SC2, SC3 Hardened steel; Silver CorrSeal treatment; Large washer head for high pull-through resistance; fiber cut at the tip; milling thread on longer versions.
W (WAF) – Washer/wafer head – Partial thread – Electroplated zinc Partially Threaded Washer/Wafer Head 6 mm, 8 mm & 10 mm 50-320 mm SC1 Hardened steel; Large head for high clamping force; intended for internal structural applications.
CY-FT – Cylindrical head – Full thread – Zinc plated Fully Threaded Cylindrical Head 8 mm & 10 mm 160-1000 mm SC1, SC2 Hardened steel; Yellow Zinc Plated (min 12 µm); Full thread for high axial load capacity (reinforcement); cylindrical head.
C-PT – Countersunk head – Partial thread – Electroplated zinc Partially Threaded Countersunk Head 8 mm , 10 mm & 12 mm 120-480 mm SC1, SC2 Hardened steel; Yellow Zinc Plated (min 12 µm); Partial thread with a milling thread above the wood thread to reduce friction; high clamping force.
H-PT – Hexagon head – Partial thread – Electroplated zinc Partially Threaded Hexagon Head 8 mm & 10 mm 80-200 mm SC1 Hardened steel; Bright Zinc Plated (min 5 µm); Hexagon head with TX-drive; partial thread with milling thread; specifically designed for steel-to-wood connections (plates/connectors).
H-FT – Hexagon head – Full thread – Electroplated zinc Fully Threaded Hexagon Head 12 mm 60-220 mm SC1 Hardened carbon steel; Bright zinc plated; Full thread for structural reinforcement and axial load distribution
ScrewsScrews
Screw Family Thread Type Head Type Diameter Length Service Class Specification
ESSDRIVE – Countersunk head – Partial thread – CorrSeal coating Partially Threaded Countersunk Head 6 mm & 8 mm 60-300 mm SC1, SC2, SC3 Hardened steel; patented point for quick start; head with cutting grooves to minimize splintering; additional milling thread on screws ≥70mm to facilitate installation.
ESSDRIVE – Countersunk head – Partial thread – Electroplated zinc Partially Threaded Countersunk Head 6 mm 40-150 mm SC1 Hardened steel; patented head shape for clean countersinking; milling grooves under the head; additional milling thread on screws ≥70mm.
ET-T – Cylindrical head – Double thread – CorrSeal coating Double Thread Cylindrical Head 6,5 mm & 8,2 mm 65-330 mm SC1, SC2, SC3 Hardened carbon steel; Double Thread (different pitches for high clamping force); cylindrical head for discreet/neat finish; fiber cut in the tip to reduce torque and prevent splitting.
HF (HEX) – Hexagon head with flange – Partial thread – CorrSeal coating Partially Threaded Hexagon Head with Flange 6 mm, 8 mm & 10 mm 50-240 mm SC1, SC2, SC3 Hardened carbon steel; Hexagonal head with integrated flange; two fiber cuts (one at the tip, one after the thread on longer screws) for low drive-in torque.
W (WAF) – Washer/wafer head – Partial thread – Stainless steel A4 Partially Threaded Washer/Wafer Head 6 mm, 8 mm & 10 mm 70-150 mm SC1, SC2, SC3 Stainless Steel AISI 316; Large head diameter for extremely high clamping force; 1 fiber cut in the tip; ideal for highly corrosive environments (coastal/industrial).
W (WAF) – Washer/wafer head – Partial thread – CorrSeal coating Partially Threaded Washer/Wafer Head 6 mm, 8 mm & 10 mm 40-320 mm SC1, SC2, SC3 Hardened steel; Silver CorrSeal treatment; Large washer head for high pull-through resistance; fiber cut at the tip; milling thread on longer versions.
W (WAF) – Washer/wafer head – Partial thread – Electroplated zinc Partially Threaded Washer/Wafer Head 6 mm, 8 mm & 10 mm 50-320 mm SC1 Hardened steel; Large head for high clamping force; intended for internal structural applications.
CY-FT – Cylindrical head – Full thread – Zinc plated Fully Threaded Cylindrical Head 8 mm & 10 mm 160-1000 mm SC1, SC2 Hardened steel; Yellow Zinc Plated (min 12 µm); Full thread for high axial load capacity (reinforcement); cylindrical head.
C-PT – Countersunk head – Partial thread – Electroplated zinc Partially Threaded Countersunk Head 8 mm , 10 mm & 12 mm 120-480 mm SC1, SC2 Hardened steel; Yellow Zinc Plated (min 12 µm); Partial thread with a milling thread above the wood thread to reduce friction; high clamping force.
H-PT – Hexagon head – Partial thread – Electroplated zinc Partially Threaded Hexagon Head 8 mm & 10 mm 80-200 mm SC1 Hardened steel; Bright Zinc Plated (min 5 µm); Hexagon head with TX-drive; partial thread with milling thread; specifically designed for steel-to-wood connections (plates/connectors).
H-FT – Hexagon head – Full thread – Electroplated zinc Fully Threaded Hexagon Head 12 mm 60-220 mm SC1 Hardened carbon steel; Bright zinc plated; Full thread for structural reinforcement and axial load distribution
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