DIN 7504 K Hexagon Head Self-Drilling Screw

Hexagon head self-drilling screws for trapezoidal sheets and metal profiles, providing fast installation without pre-drilling in roofing and cladding applications.

DIN 7504 K hexagon head self-drilling screw – product photo

DIN 7504 K hexagon head self-drilling screw – technical drawing

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Thread Size (d)		ST4.2	ST4.8	ST5.5	ST6.3
Major Diameter	d1	4.02-4.22	4.62-4.8	5.28-5.46	6.03-6.25
Width Across Flats	s	6.78-7.00	7.78-8.00	7.78-8.00	9.78-10.00
Washer Diameter	dk	8.20-8.80	9.80-10.50	10.00-11.00	12.20-13.20
Head Height	k	4.00-4.25	4.15-4.45	5.15-5.45	6.15-6.45
Washer Height	c	0,90	0,90	1,00	1,00
Drill Range	dp	3,60	4,10	4,80	5,80
Pitch	p	1,40	1,60	1,80	1,80
Thread Type	st	st	st	st	st
Min. Case Hardness	HV1	600	600	600	600
Core Hardness	HV0,3	300-400	300-400	300-400	300-400
Min. Torque	N·cm	4,50	6,50	10,00	14,00
Drill Points	point	Nr.2	Nr.3	Nr.3	Nr.3
Drilling Capacity	mm	0.70-3.00	1.75-4.40	1.75-5.25	2.00-6.00

Thread Size (d)			ST4.2	ST4.8	ST5.5	ST6.3
Length (L)	min.	max.	Mass for 1,000 units (kg)
13	12,65	13,35	1,79	2,60	–	–
16	15,10	17,00	2,00	2,95	3,45	–
19	18,00	20,50	2,26	3,20	3,90	6,06
22	21,58	22,42	2,42	3,45	4,29	6,36
25	24,00	26,50	2,63	3,70	4,67	6,95
32	30,50	33,50	3,12	4,80	5,59	8,12
38	36,50	39,50	3,67	5,21	6,26	9,20
45	44,50	45,50	4,08	5,80	6,85	9,94
50	48,75	51,50	4,44	6,37	7,78	11,18
60	58,80	61,20	4,83	7,35	8,86	12,84
70	69,40	70,60	–	8,58	10,10	14,03
80	79,40	80,60	–	9,73	11,30	15,84
90	89,30	90,70	–	–	12,70	18,00
105	103,25	106,75	–	–	16,10	19,50
120	118,25	121,75	–	–	20,12	24,30
135	133,25	136,75	–	–	18,70	23,10