To the top

New Zealand International

Product Tabs

Product Details

Superior to nails in holding power and pullout resistance

The SDWH19 Timber-Hex screw is ideal for structural and general purpose timber frame applications where a hex-head drive is preferred.

The SDWH27 Timber-Hex screws are also available with an extra strong shank and have a Hot-Dip Galvanised finish for when you require a heavy duty fastener for tough exterior structural applications.

Material

Carbon Steel

Finish
  • SDWH19 — Double Barrier Coating
  • SDWH27 — CL4 Hot-Dip Galvanised
     
Features & Benefits
  • Bold thread design provides superior holding power
  • SawTooth™ point ensures fast starts, reduces installation torque
  • Screws may be installed without pre-drilling in most applications
  • Underhead nibs offer greater installer control when seating the head
  • Hex Head Drive for easier installation
Applications

SDWH27

  • Piles
  • Decks
  • Boardwalks
  • Anywhere you need a tough exterior structural fastener

SDWH19

  • Ledger boards
  • Stud-to-stud
  • Bottom plate to floor/joist
Model No. Table

Model No.

Head Marking (##)

Size

Thread

Point

Material & Finish

Box Qty

Drive Size

SDWH19400DB-R50

194

4.9 x 101mm

Bold Threads

SawTooth™ Type-17 Point

Carbon Steel
Double Barrier Coating

50

5/16” Hex

SDWH19600DB-R50

196

4.9 x 152mm

50

SDWH27400GR30

2704

7.0 x 101mm

Serrated Threads

Carbon Steel
Hot-Dip Galvanised, CL4

30

3/8" Hex

SDWH27600GR30

2706

7.0 x 152mm

30

 

PLEASE NOTE:

Pre-drilling and countersink may be necessary at ends, butt joints, and on applications where denser material is used. Follow the board manufacturer's recommendation where applicable. WARNINGS: Always wear PPE during installation. Corrosive environments, exposure to water, salt air, or chemicals (including some wood preservatives) may cause early failure. Click here for Corrosion Information, Important Information & General Notes.

Brochures & Catalogues
Technical Data & Docs

Technical Data Sheets

PDF icon Technical Data Sheet - SDWH

Warranty

Warranty

Masterspec
Alternative Products

Alternative Products

SDWS TIMBER SS Screw

The Strong-Drive® SDWS Timber SS Screw is a 7mm-diameter, Type 316 stainless steel, heavy-duty structural fastener suitable for marine and coastal applications where severe-corrosion resistance is a necessity.

Inspiration
Request a Demo

Request a Demo/Sample

Experience the innovation design of Simpson Strong-Tie's products and how we can help you build safer, stronger structures. Please fill out your details and submit the form below. We’ll be in touch to schedule a time to talk and give you a personal demo of Simpson Strong-Tie products.

Request a Demo/Sample

Experience the innovation design of Simpson Strong-Tie's products and how we can help you build safer, stronger structures. Please fill out your details and submit the form below. We’ll be in touch to schedule a time to talk and give you a personal demo of Simpson Strong-Tie products.

Structural Connections

 

Unmatched Quality from the Truss to the Foundation

With nearly 60 years of field and R&D experience, Simpson Strong-Tie® timber connectors are manufactured to the industry's highest standards. From framing angles to straps to heavy-duty joist hangers, we offer the most diverse product line so that you have the right product for the job.

Simpson Strong-Tie® connectors offer unmatched quality with laboratory and field testing, and are backed by our uncompromising commitment to customer service. As the company that built the connector industry, you can count on Simpson Strong-Tie® to work closely with builders, engineers and building officials to deliver innovative, building code-compliant solutions to help build safer, stronger structures economically. Download the Timber Connectors NZS 3604 Catalogue.

Timber Connectors

From testing to service to availability, everything we do is engineered to ensure your project's success. With every product, you know you are getting the quality, value, service and on-time delivery that we have built our reputation on for the past 60 years.

From straps and ties to joist hangers and much more, Simpson Strong-Tie® structural connectors increase the strength and safety of timber-frame structures. Each connector is unique to Simpson Strong-Tie and is designed for specific applications without the need to adapt metal plating to suit a connection. Download the Timber Construction Connectors Catalogue (2016-2018).

Steel Frame Connectors

From fully tested and engineered connectors and clips Simpson Strong-Tie® provides comprehensive structural solutions for cold-formed steel construction. From steel-to-steel connections to full-scale lateral solutions and curtain wall connectors, we remain committed to developing new technology that helps to advance the cold-formed steel industry.

Find out how Simpson Strong-Tie timber connectors can help you build the right way every day. Download the Cold-Fromed Steel Construction Connectors Catalogue.