95 rows Metric External ( Fasteners ) Thread and Fastener Sizes M20 - M50; ANSI/ ASME EXTERNAL Screw Thread Size Chart. All units are in inches. Unified Screw Threads per. ANSI/ASME B1.1-1989 (R2001), R2001) Nomenclature, are used. Fastener Standard s. ASTM's fastener standard s are instrumental in specifying, testing, and evaluating the material, dimensional, mechanical, and metallurgical properties of the various forms of hardware fastener s. These fasteners are used to mechanically join or affix other hardware objects together, heree in many forms which include rivets, nuts,. The Size Dimension pertains to diameter of screws, bolts, pins and inner diameter of nuts and washers. You may search for your product based on diameter by selecting a measurement on the Size dropdown. Other size measurements, such as screw, bolts, pin length, the outer diameters of nuts washers, etc., appear on the search result itself.

Standard fastener s are basic industrial fastener s - square and hex bolts, cap screws, carriage bolts, plow bolts, lag screws, studs, nuts, rivets and others - which have been standardized over the years as to type‘, style, usage, properties, dimensions and tolerances. 168 rows Fastener and Screw / Bolt Design, Formula and Calculations. The following table chart … American Fastener Technology Corp offers technical information on fastener standards including metric fastener standards, nut and bolt size standards, and a drill bit size chart. Plus other information. 2013 American Fastener Technologies Corporation Nine Frontier Drive, Gibsonia, PA 15044 - …

The diameter refers to the major diameter, or outside edge, of the threads. If the screw size includes a dash with a number following it, that is the number of threads per inch (tpi). Usually tpi is only shown with machine screws or other fasteners with machine screw threads. So, a 1/4-20 screw has a 1/4 diameter (.250) with 20 threads per inch. If you know what you are looking for send a request for a quote IMPORTANT: Make sure to print this chart to Actual Size (no scaling). After printing, measure the ruler in the margin to ensure correct scale. US Hex Bolt Sizes and Thread Pitches