The Simpson Strong-Tie Strong-Drive SDS Heavy-Duty Connector screw is a 1/4-in-diameter high-strength structural screw ideal for various connector installations as well as wood-to-wood and engineered wood applications. It installs with no predrilling and has been extensively tested in various applications. The SDS is improved with an easy-driving Type-17 point and a corrosion-resistant double-barrier coating.
- Type-17 point enables easy driving with no predrilling and minimal wood splitting 
- 3/8" hex head with 0.500" integrated washer 
- Head is stamped with the Simpson Strong-Tie "no equal" sign and fastener length for easy identification after installation 
- Serrated threads 
- Replacement driver bit model BITHEXR38-R1 (not included) 
- Length: 6-in 
- Corrosion-resistant double-barrier coating 
- Quantity: 10 
- A low-speed 1/2-in drill with a 3/8-in hex driver is the recommended tool for installation