Pdf - Asme B1864

To find the ASME B18.6.4 standard, which covers "Screws: Tapping and Metallic Drive Screws (Inch Series)," you can access it through the following authoritative channels. Please note that official ASME standards are protected by copyright and generally require a purchase; they are not typically available for free as public PDFs. How to Access ASME B18.6.4 Official ASME Store

2.1 Thread Forming Screws

These screws do not have cutting edges. They function by plastic deformation of the host material.

The standard specifies requirements for several fastener types designed to create their own threads in metal, wood, or plastic. Key technical areas include: Fasteners Clearing House Fastener Types Thread-Forming Screws

Head Styles: Covers various configurations including flat countersunk (82 and 100 degrees), oval countersunk, pan, fillister, and hex heads.