Size Reference
K	DIN 7504 K Hexagon Head Self-drilling (roofing) Screws		Following Table
L	DIN 7504 L Hexagon Washer Head Self-Drilling Screws		Following Table
N	DIN 7504 N Phillips Cross Recessed Pan Head Self-Drilling Screws		DIN 7981
P	DIN 7504 P Phillips Cross Recessed Flat Head Self-Drilling Screws(Countersunk)		DIN 7982
Q	DIN 7504 Phillips Oval Head Self-Drilling Screws		DIN 7983

Screw Thread d			ST 2.9	ST 3.5	ST 3.9	T 4.2	ST 4.8	ST 5.5	ST 6.3
Drilling range	From		0.7	0.7	0.7	1.75	1.75	1.75	2
	To		1.9	2.25	2.4	3	4.4	5.25	6
dp	max.		2.3	2.8	3.1	3.6	4.1	4.8	5.8
l			lg min
Nominal Length	min.	max.
9.5	8.75	10.25	3.25	2.85	-	-	-	-	-
13	12.1	13.9	6.6	6.2	5.8	4.3	4.7	-	-
16	15.1	16.9	9.6	9.2	8.8	7.3	5.8	5	-
19	18	20	12.5	12.1	11.7	10.3	8.7	8	7
22	21	23	-	15.1	14.7	13.3	11.7	11	10
25	24	26	-	18.1	17.7	163	14.7	14	13
32	30.75	33.25	-	-	24.5	23	21.5	21	20
38	36.75	39.25	-	-	30.5	29	27.5	27	26
45	43.75	46.25	-	-	-	-	34.5	34	33
50	48.75	51.25	-	-	-	-	39.5	39	38

Head dimensions of Type K & L screws
Screw Thread d		ST 3.5	ST 3.9	T 4.2	ST 4.8	ST 5.5	ST 6.3
c	min	0.6	0.6	0.9	0.9	1	1
dc	max	8.3	8.3	8.8	10.5	11	13.2
	min	7.6	7.6	8.2	9.8	10	12.2
e	min	5.96	5.96	7.59	8.71	8.71	10.95
k	max	3.45	3.45	4.25	4.45	5.45	6.45
	min	3.2	3.2	4	4.15	5.15	6.15
k'	min	1.55	1.55	1.9	2	2.7	3.3
n	Nominal Dimension	1	1	1.2	1.2	1.6	1.6
	min	1.06	1.06	1.26	1.26	1.66	1.66
	max	1.2	1.2	1.51	1.51	1.91	1.91
r	max	0.5	0.5	0.6	0.7	0.8	0.9
s	max.=nominal dimension s	5.5	5.5	7	8	8	10
	min	5.32	5.32	6.78	7.78	7.78	9.78
t	min	1	1	12	1.4	1.6	1.8
	max	1.4	14	1.6	1.8	2	2.2

DIN 7001-8000
DIN 7338 - Rivets for brake linings and clutch linings
DIN 7343 - Coiled Pins, Medium Duty
DIN 7349 - Flat Washers With Large Ext. Diameter
DIN 7500AE - Slotted cheese head thread rolling screws
DIN 7500BE - Slotted pan head thread rolling screws
DIN 7500C - Metric pan head triangle lock screws
DIN 7500CE - Cross recessed pan head thread rolling screws
DIN 7500DE - Hexagon head thread rolling screws
DIN 7500E - Socket hexagon cheese head thread rolling screws
DIN 7500KE - Slotted rasied countersunk thread rolling screws
DIN 7500LE - Slotted rasied countersunk thread rolling screws
DIN 7500ME - Cross recessed countersunk head thread rolling screws
DIN 7500NE - Cross recessed raised countersunk head thread rolling screws
DIN 7500OE - Hexalobular socket cheese head thread rolling screws
DIN 7500PE - Hexalobular socket pan head thread rolling screws
DIN 7500QE - Hexalobular socket raised countersunk head thread rolling screws
DIN 7504 - N P K head self drilling screws
DIN 7968 - Hexagon fit bolts with hexagon nut for steel structures
DIN 7969 - Slotted countersunk head bolts with hexagon nut for steel structures
DIN 7970 - Tapping screw threads
DIN 7978 A - Taper PIns With Internal Thread
DIN 7979 D - Dowel Pins With Internal Thread
DIN 7980 - Hi-Collar Lock Washers
DIN 7981 B(BZ) - Cross Recessed Pan Head Tapping Screws
DIN 7982 B - Cross Rec. Flat hd Tapping Screws, hd Angle 80
DIN 7983 B - Cross Rec. Oval hd Tapping Screw, hd Angle 80
DIN 7984 - Socket Low Head Cap Screws
DIN 7985 A - Cross Recessed Pan Head Machine Screws
DIN 7985 Z1 - Cr. Rec. Pan Head Screws w/captive Flt. Washer
DIN 7985 Z4 - Cr. Rec. Pan Head Screws w/captive l/washer
DIN 7989 A - Washers For Steel Constructions
DIN 7991 - Flat Socket Head Cap Screws
DIN 7997 - Cross recessed countersunk head wood screws
DIN 7998 - Threads and Thread Ends for Wood Screws