These values are recommendations, functionality has precedence.
Thread Diameter	Fine Fit	Medium Fit	Coarse Fit
M1	1.1mm	1.2mm	1.3mm
M1.2	1.3mm	1.4mm	1.5mm
M1.4	1.5mm	1.6mm	1.8mm
M1.6	1.7mm	1.8mm	2.0mm
M1.8	2.0mm	2.1mm	2.2mm
M2	2.2mm	2.4mm	2.6mm
M2.5	2.7mm	2.9mm	3.1mm
M3	3.2mm	3.4mm	3.6mm
M3.5	3.7mm	3.9mm	4.2mm
M4	4.3mm	4.5mm	4.8mm
M4.5	4.8mm	5.0mm	5.3mm
M5	5.3mm	5.5mm	5.8mm
M6	6.4mm	6.6mm	7.0mm
M7	7.4mm	7.6mm	8.0mm
M8	8.4mm	9.0mm	10.0mm
M10	10.5mm	11.0mm	12.0mm
M12	13.0mm	13.5mm	14.5mm
M14	15.0mm	15.5mm	16.5mm
M16	17.0mm	17.5mm	18.5mm
M18	19.0mm	20.0mm	21.0mm
M20	21.0mm	22.0mm	24.0mm
M22	23.0mm	24.0mm	26.0mm
M24	25.0mm	26.0mm	28.0mm
M27	28.0mm	30.0mm	32.0mm
M30	31.0mm	33.0mm	35.0mm
M33	34.0mm	36.0mm	38.0mm
M36	37.0mm	39.0mm	42.0mm
M39	40.0mm	42.0mm	45.0mm
M42	43.0mm	45.0mm	48.0mm
M45	46.0mm	48.0mm	52.0mm
M48	50.0mm	52.0mm	56.0mm
M52	54.0mm	56.0mm	62.0mm
M56	58.0mm	62.0mm	66.0mm
M60	62.0mm	66.0mm	70.0mm
M64	66.0mm	70.0mm	74.0mm
M68	70.0mm	74.0mm	78.0mm
M72	74.0mm	78.0mm	82.0mm
M76	78.0mm	82.0mm	86.0mm
M80	82.0mm	86.0mm	91.0mm
M85	87.0mm	91.0mm	96.0mm
M90	93.0mm	95.0mm	101.0mm
M95	98.0mm	101.0mm	107.0mm
M100	104.0mm	107.0mm	112.0mm
M105	109.0mm	112.0mm	117.0mm
M110	114.0mm	117.0mm	122.0mm
M115	119.0mm	122.0mm	127.0mm
M120	124.0mm	127.0mm	132.0mm
M125	129.0mm	132.0mm	137.0mm
M130	134.0mm	137.0mm	144.0mm
M140	144.0mm	147.0mm	155.0mm
M150	155.0mm	158.0mm	165.0mm

Last Updated: 02 July 2020