October 26, 2023 Subject: Mechanical Fasteners, Dimensional Standards, and Quality Assurance Standard Referenced: ASME B18.6.4 - Thread Forming and Thread Cutting Tapping Screws and Metallic Drive Screws (Inch Series)
The Backbone of Modern Fastening: Understanding ASME B18.6.4 asme b1864 pdf
For joining thin-gauge sheet metal ductwork and equipment enclosures. 2023 Subject: Mechanical Fasteners