💡 ASME B18.6.4 is now considered obsolete for new designs. On February 5, 2013, it was consolidated into ASME B18.6.3 , which now covers Machine Screws, Tapping Screws, and Metallic Drive Screws in one comprehensive document. 🛠️ Scope & Application
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
Features a cutting edge to "tap" their own threads in hard materials like cast iron or steel. asme b1864 pdf
The standard dictates the precise geometry for various head types to ensure driving tools fit perfectly without stripping. Covered designs include: Flat, oval, and undercut countersunk heads Pan, truss, and binding heads Hex and hex washer heads 2. Recess and Slot Dimensions
Understanding the revision history is crucial for legal and technical accuracy. The versions and status of ASME B18.6.4 are as follows: 💡 ASME B18
For engineers, procurement officers, and quality control personnel, having access to the is essential for specifying, inspecting, and purchasing these fasteners. What is the ASME B18.6.4 Standard?
These feature cutting edges or slots that physically carve out material, creating chips as they are driven. and quality control personnel
If you need help identifying a specific type of thread-forming screw, you can tell me the head style or application.
The ASME B18.6.4 standard categorizes tapping screws based on how they interact with the material: ANSI B18.6.4 Self Tapping Drive Screws (Type U)
: ASME standards are technically voluntary but are often mandated by law or contract in many engineering and construction sectors. Standards & Certification - FAQ - ASME