DIN 7991 TX

Equivalent Standards

DIN 7991 Hexagon Socket Countersunk Head Screws Dimensions

d	s	e	dk	t	TORX
M 3	2	2.3	6	1.7	TX 10
M 4	2.5	2.9	8	2.3	TX 20
M 5	3	3.5	10	2.8	TX 25
M 6	4	4.7	12	3.3	TX 30
M 8	5	5.8	16	4.4	TX 40
M 10	6	7	20	5.5	TX 50
M 12	8	9.4	24	6.5	> TX 50
M 16	10	11.7	30	7.5	> TX 50
M 20	12	13.9	36	8.5	> TX 50

DIN 7991 Countersunk Socket Head Cap Screws Weights

Diameter	M3	M4	M5	M6	M8	M10	M12	M16	M20	M24
Length
8	0.47	0.92	1.60	2.35
10	0.56	1.07	1.85	2.70	5.47
12	0.65	1.23	2.10	3.05	6.10	10.1
16	0.83	1.53	2.59	3.76	7.35	12.1
20	1.00	1.84	3.09	4.46	8.60	14.1	21.2
25	1.35	2.23	3.71	5.34	10.2	16.6	24.8
30	1.63	2.9	4.33	6.22	11.7	19.1	28.5	51.8
35		3.4	5.43	7.10	13.3	21.6	32.1	58.4	91.4
40		3.9	6.20	8.83	14.8	24.1	35.7	65.1	102
50			7.74	11.00	19.9	30.1	43.0	78.4	123	179
60					24.8	35.7	54.0	91.7	143	209
70						41.2	62.9	111	164	239
80								127	200	269
90								143	226	299
100									253	340

Weights are in kilograms per 1,000 pieces unless otherwise specified. All weights are approximations and strictly informative.

l - length of Bolts
d - the nominal diameter of the thread
t - groove depth
dk - head diameter
s - groove width