DIN 7981 C

DIN 7981 C Pan head tapping screws with cross recess H and Z, Form C Dimensions

Thread size	p	a	dk		k		r	rf	cross recess	Type H			Type Z			Y max
										m	Penetration depth		m	Penetration depth
		max	nominal=max	min	nominal=max	min	max	approx	No.	approx	min	max	approx	min	max	Type C	Type F
ST 2.2	0.8	0.8	4.2	3.9	1.8	1.55	0.3	3.4	1	2.6	0.86	1.32	2.4	1.1	1.35	2	1.6
ST 2.9	1.1	1.1	5.6	5.3	2.2	1.95	0.4	4.4	1	3	1.35	1.8	2.9	1.58	1.83	2.6	2.1
ST 3.5	1.3	1.3	6.9	6.54	2.6	2.35	0.5	5.4	2	4.2	1.4	2.03	3.9	1.47	1.93	3.2	2.5
ST 3.9	1.3	1.3	7.5	7.14	2.8	2.55	0.5	5.8	2	4.4	1.63	2.26	4.1	1.7	2.16	3.5	2.7
ST 4.2	1.4	1.4	8.2	7.84	3.05	2.75	0.6	6.2	2	4.6	1.8	2.46	4.3	1.88	2.34	3.7	2.8
ST 4.8	1.6	1.6	9.5	9.14	3.55	3.25	0.7	7.2	2	5	2.26	2.87	4.7	2.28	2.74	4.3	3.2
ST 5.5	1.8	1.8	10.8	10.37	3.95	3.65	0.8	8.2	3	6.5	2.49	3.15	6.2	2.51	2.97	5	3.6
ST 6.3	1.8	1.8	12.5	12.07	4.55	4.25	0.9	9.5	3	7.1	3	3.66	6.7	3.02	3.48	6	3.6

DIN 7981 Phillip Pan Head Tapping Screws Weights

Diameter	M2.2	M2.9	M3.5	M3.9	M4.2	M4.8	M5.5	M6.3
Length
4.5	0.16
6.5	0.2	0.4
9.5	0.26	0.51	0.79	1.05	1.22	1.85
13	0.33	0.63	0.97	1.27	1.46	2.2	3.2	3.9
16	0.39	0.74	1.12	1.46	1.67	2.5	3.6	4.44
19		0.85	1.27	1.65	1.88	2.8	4	4.98
22			1.42	1.84	2.1	3.1	4.38	5.52
25			1.57	2.03	2.3	3.4	4.76	6.06
32					2.8	4.1	5.67	7.32
38						4.7	6.45	8.4

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