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#4 - 40 UNC : Basic Thread Dimensions (Pitch, minor & major diameters, depth, lead), Tolerance range for all applicable classes and much more
- M3
% o0100 (machining doctor - threading cnc program)...
- M3
29 wrz 2024 · The 4 in the screw size designation indicates the diameter of the thread, which can range from 2.695 mm to 2.827 mm depending on whether it has coarse or fine teeth. The 40 indicates the number of teeth in a 25.4 mm length.
20 wrz 2024 · These charts typically cover sizes up to 4 inches. For example, a 1/4-inch screw size would convert to approximately 6.35 mm in metric. Similarly, a 3/8-inch screw is equivalent to approximately 9.525 mm, and a 1/2-inch screw converts to roughly 12.7 mm.
The charts below show metric bolt conversions to standard bolt conversions and DIN numbers for fasteners. To assist in ordering, we offer metric bolt conversion data for industrial bolts/rods, machine screws, and small-diameter fasteners, including approximate equivalency and common DIN numbers.
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.
Screw Size Conversion Chart. In the metric system, both the diameter of screws and the length are measured in millimeters. The first number in the imperial system is the gauge of the screw which refers to the diameter – the larger the number, the larger the diameter.
The Ulitmate Metric Screw Thread Resource: Basic Dimensions, Classes, Tolerances, Formulas, Charts, and Explanations