Unified Miniature Thread ANSI/ASME B1.10-1958

In April 1955, representatives from the UK, Canada and the USA agreed on a miniature thread standard. The measurements for the Unified Miniature thread has been defined with reference to the ISO standard. Unlike most metric Screws, the designation consists of the diameter of the screw in millimeters followed by UNM.
The flank angle is 60°.

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Thread Size mm	Major Diameter mm	Pitch mm	TPI
0.30 UNM	0.30	0.080	317.50
0.35 UNM	0.35	0.090	282.22
0.40 UNM	0.40	0.100	254.00
0.45 UNM	0.45	0.100	254.00
0.50 UNM	0.50	0,125	203.20
0.55 UNM	0.55	0.125	203.20
0.60 UNM	0.60	0.150	169.33
0.70 UNM	0.70	0.175	145.14
0.80 UNM	0.80	0.200	127.00
0.90 UNM	0.90	0.225	112.89
1.00 UNM	1.00	0.250	101.60
1.10 UNM	1.10	0.250	101.60
1.20 UNM	1.20	0.250	101.60
1.40 UNM	1.40	0.300	84.67
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