Question

What are M4 screws?

Answer 1

#14 is close to, but not exactly the same as, 1/4-inch.) The major diameter in Unified threads = 0.060\u2033 + 0.013\u2033 x (numbered diameter). So #2 has a major diameter of 0.086\u2033. ... We see that #14 would be 0.242 inches and #1/4 is 0.250 inches.Apr 10, 2012

Without Metric Threads We're Screwed | The Metric Maven

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Fastener and Screw / Bolt Design, Formula and Calculations

Screw Size	Class Thread	Major Diameter
3-56	3A	0.0990
4-40	2A	0.1120
4-40	3A	0.1120
4-48	2A	0.1120

56 more rows

ANSI External Screw Threads Size Tolerances Chart - Engineers Edge

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M4 x 10mm Cross Recessed Pan Head Machine Screws. Thread Diameter: 4mm, Thread Pitch: 0.7mm, Thread Length: 10mm. Head Diameter: 8mm, Head Height: 3.2mm, Head Style: Pan.