Because ASME standards are proprietary documents protected by copyright, obtaining the official PDF requires purchasing it through authorized channels.
Essential for thread-cutting screws to bite into steel.
A review of the official ASME catalog reveals no active standard with the number B1864. The only active standard from ASME with a similar nomenclature is , which covers "Thread Forming and Thread Cutting Tapping Screws and Metallic Drive Screws, Inch Series". A quick look at the titles of well-known ASME collections, such as the B16 Series of standards for pipe flanges and fittings or the B18 Series for fasteners , reveals no document matching B1864.
: Feature specialized relief slots or cutting edges (such as Types D, F, G, and T) to physically cut threads into structural plastics or dense metals.
| Standard | Title | Common Use Case | | :--- | :--- | :--- | | | Square, Hex, Heavy Hex, & Askew Head Bolts | General industrial hex bolts | | ASME B18.2.2 | Square and Hex Nuts | Heavy hex nuts, jam nuts | | ASME B18.6.4 | Thread Forming & Thread Cutting Tapping Screws | Sheet metal screws, self-tapping fasteners | | ASME B18.3 | Socket Cap, Shoulder, and Set Screws (Inch Series) | Hex socket head cap screws |
: Specifications for thread-forming and thread-cutting points, ensuring the screw can create its own mating threads in materials like metal, plastic, or wood.
, a technical standard that defines the very DNA of tapping screws and metallic drive screws. While a PDF of this standard might look like a dry collection of tables and dimensions, it is actually a vital blueprint for the reliability of the modern world. The Language of Precision Standards like ASME B18.6.4
For casual reference, ASME occasionally offers of upcoming revisions free of charge on their website—but these are not the final, citable standard.
ASME B18.6.4 covers "Inch Series" fasteners used to create their own mating threads in materials like sheet metal, plastic, and plywood. It provides:
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