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Nuts and Bolts

by Skippy|Published July 16, 2018

	Holes					Bolts (DIN 933)				Nuts				Washers (DIN125A)
	Tapping Diameter		Clearance Holes
	Coarse	Fine	Close	Medium	Coarse	s	e	k	D	s	e	m plain	m thin	id	t	od
Ratio										1.6D	1.8D	0.8 D	0.5D
M1	0.75			1.2					1
M1.2	0.95			1.4					1.2
M1.4	1.1			1.6					1.4
M1.6	1.25		1.7	1.8	2.0				1.6
M1.8	1.4			2.0					1.8
M2	1.6		2.2	2.4	2.6				2
M2.2	1.7			2.8					2.2
M2.5	2.05		2.7	2.9	3.1				2.5
M3	2.5		3.2	3.4	3.6				3					3.2	0.5	7
M3.5	2.9			3.9					3.5
M4	3.3		4.3	4.5	4.8				4					4.3	0.8	9
M5	4.2		5.3	5.5	5.8				5					5.3	1	10
M6	5.0		6.4	6.6	7.0	10		4	6					6.4	1.6	12.0
M7									7					7.4	1.6	14
M8	6.8	7.0	8.4	9.0	10.0	13		5.3	8					8.4	1.6	16
M10	8.5	8.7	10.5	11.0	12.0	17		6.4	10					10.5	2	20
M12	10.2	10.8	13	14	15	19		7.5	12					13	2.5	24
M14	12			15.5		22		8.8	14					15	2.5	28
M16	14.0	14.5	17.0	18.0	19.0	24		10	16					17	3	30
M18	15.5			20		27		11.5	18					19	3	34
M20	17.5	18.5	21.0	22.0	24.0	30		12.5	20					21	3	37
M22	19.5			24		32		14.22	22					23	3	39
M24	21.0	22.0	25.0	26.0	28.0	36		15.22	24					25	4	44
M27						41		17.35	27					28	4	50
M30	26.5	28.0	31.0	33.0	35.0	46		19.12	30					31	4	56
M33						50		21.42	33					34	5	60
M36	32.0	33.0	37.0	39.0	42.0	55		22.92	36					36	5	66
M39						60		25.43	39					40	6	72
M42						65		26.42	42					43	7	78
M45									45					46	7	85
M48									48					50	8	92
M52									52					54	8	98
M56									56					58	9	105
M60									60					62	9	110
M64									64					66	9	115

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