Simpson 0.390 x 4" Strong-Drive SDHR COMBO-HEAD Screw Blue Zinc PACK:25 Pk What types of headers is

What types of headers is the SHH6/68-KT24 designed to support

148" shank diameter and 3" length mean for installation with standard framing

How many dies are included and what radii are available

Powerfeeds: X-Axis and Y-Axis JET Powerfeeds

making it ideal for demanding structural connections

Simpson 0.390 x 4" Strong-Drive SDHR COMBO-HEAD Screw Blue Zinc PACK:25 Pk What types of headers isThe Simpson Strong Drive SDHR Combo Head Screw is a heavy duty structural fastener engineered for cross laminated timber construction, mass timber assemblies, and general interior applications. Built with a partially threaded shank and a robust 0. 390 in. outer diameter, this blue zinc coated screw is purpose built to draw structural members tightly together while delivering exceptional connection strength in engineered wood and modular construction