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Metric thread drill and tap chart with detailed information on tap drill sizes and thread sizes.

Sep 15, 2013 · A metric ISO screw thread is designated by the letter M followed by the value of the nominal diameter D (the maximum thread diameter) and the pitch P, both expressed in millimetres and separated by a dash or sometimes the multiplication sign, × (e.g. M8-1.25 or M8×1.25). If the pitch is the normally used "coarse" pitch listed in ISO 261 or ...

Metric Screws! : Metric Conversion - Tools Assortments Screws by Head Style Screw Extractors Non-Metric Screws (Inch) Nuts and Washers Metric Machine Screws Computer ...

The following table chart defines standard metric external thread size M1.6 to M18 per. ANSI/ASME B1.13M-1995. These thread sizes and classes represent bolts and screws, as well, as other standard external threads.

Nominal screw sizes M5 and larger have six drilled holes spaced 60 degrees apart unless the purchaser specifies two drilled holes. The positioning of holes on opposite sides of the socket should be such that the hole alignment check plug will …

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Our user-friendly metric thread chart offers comprehensive specification data for various metric screw sizes. Our thread size chart covers M1.6 up to M68.

Below is a single, consolidated reference for comparing common metric diameters or lengths (in mm) with their approximate inch equivalents (“in.”) and the closest common fraction typically used by mechanics. If you see a fastener labeled “M6,” that simply refers to 6 mm.

Mar 13, 2025 · How to Read a Imperial Set Screw Size (Example: 1/4-20 x 1) 1/4: The nominal thread diameter is 1/4 inch. 20: The thread pitch is 20 threads per inch (TPI). 1: The screw length is 1 inch. Specific Set Screw Size Charts for Different Point/Drive Types. Each type of set screw can have slightly different size standards based on …