Equivalent Standards

Dimensions for Low Head Socket Head Cap Screws

Size	Pitch	Thread Length b1 (min)			Head Dia. (d2)		Head Height. (k)		Key Size (s)		Key Engagement (t)
		Length (MM)
		≤125	>125≤200	>200	Min	Max	Min	Max	Min	Max	Min	Max
M 3	0.5	12.00	-	-	5.320	5.500	1.860	2.000	2.020	2.100	1.380	1.620
M 4	0.70	14.00	-	-	6.780	7.000	2.660	2.800	2.520	2.600	2.180	2.420
M 5	0.80	16.00	-	-	8.250	8.500	3.320	3.500	3.020	3.100	2.580	2.820
M 6	1.00	18.00	-	-	9.780	10.000	3.820	4.000	4.020	4.120	2.880	3.120
M 8	1.25	22.00	-	-	12.720	13.000	4.820	5.000	5.020	5.140	3.650	3.950
M 10	1.50	26.00	32.00	-	15.730	16.000	5.820	6.500	7.025	7.175	4.350	4.650
M 12	1.75	30.00	36.00	-	17.730	18.000	6.780	7.000	8.025	8.175	4.850	5.150
M 14	2.00	34.00	40.00	-	20.670	21.000	7.780	8.000	10.025	10.175	5.150	5.450
M 16	2.00	38.00	44.00	57.00	23.610	24.000	8.780	9.000	12.032	12.212	5.350	5.650
M 18	2.50	42.00	48.00	61.00	26.670	27.000	9.780	10.000	14.032	12.212	6.320	6.680
M 20	2.50	46.00	52.00	65.00	29.670	30.000	10.730	11.000	14.032	14.212	7.320	7.680
M 22	2.50	50.00	56.00	69.00	32.610	33.000	11.730	12.000	14.032	14.212	7.820	8.180
M 24	3.00	54.00	60.00	73.00	35.610	36.000	12.730	13.000	17.050	17.230	7.820	8.180