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Product Introduction

DIN7983 (ISO7051)

DIN7983

Thread size									ST 2.2	ST 2.9	ST 3.5	ST 4.2	ST 4.8	ST 5.5	ST 6.3
Pᴵ⁾									0.8	1.1	1.3	1.4	1.6	1.8	1.8
a²⁾ max.									0.8	1.1	1.3	1.4	1.6	1.8	1.8
dk	Theoretical ᶟ⁾					max.	4.4	6.3	8.2	9.4	10.4	11.5	12.6
	actual					max.	3.8	5.5	7.3	8.4	9.3	10.3	11.3
	actual					min.	3.5	5.2	6.9	8	8.9	9.9	10.9
f =									0.5	0.7	0.8	1	1.2	1.3	1.4
k max.									1.1	1.7	2.35	2.6	2.8	3	3.15
r max.									0.8	1.2	1.4	1.6	2	2.2	2.4
rʃ =									4	6	8.5	9.5	9.5	11	12
Cross recess	Recess No.	0	1	2			3
	Type H		m ref.	2.2	3.4	4.8	5.2	5.4	6.7	7.3	-	-	-	-	-
			Penetration		min.	1.2	1.8	2.25	2.7	2.9	2.95	3.5	-	-	-
			Penetration		max.	1.5	2.2	2.75	3.2	3.4	3.45	4	-	-	-
	Type Z		m ref.	2.2	3.3	4.8	5.2	5.6	6.6	7.2	-	-	-	-	-
			Penetration		min.	1.15	1.8	2.25	2.65	2.9	2.95	3.4	-	-	-
			Penetration		max.	1.4	2.1	2.7	3.1	3.35	3.4	3.85	-	-	-
y ref.⁴⁾	Type C	2	2.6	3.2	3.7	4.3	5	6	-	-	-	-	-	-	-
y ref.⁴⁾	Type F	1.6	2.1	2.5	2.8	3.2	3.6	3.6	-	-	-	-	-	-	-
/ ⁵⁾									-	-	-	-	-	-	-
Type C			Type F				-	-	-	-	-	-	-	-	-
nom.		min.		max.	min.		max.		-	-	-	-	-	-	-
4.5		3.7		5.3	3.7		4.5		-	-	-	-	-	-	-
6.5		5.7		7.3	5.7		6.5		-	-	-	-	-	-	-
9.5		8.7		10.3	8.7		9.5		-	-	-	-	-	-	-
13		12.2		13.8	12.2		13		-	-	-	-	-	-	-
16		15.2		16.8	15.2		16		-	-	Range		-	-	-
19		18.2		19.8	18.2		19		-	-	-	Of	-	-	-
22		21.2		22.8	20.7		22		-	-	-	-	commercial		-
25		24.2		25.8	23.7		25		-	-	-	-	-	Iengths
32		30.7		33.3	30.7		32		-	-	-	-	-	-	-
38		36.7		39.3	36.7		38		-	-	-	-	-	-	-
45		43.7		46.3	43.5		45		-	-	-	-	-	-	-
50		48.7		51.3	48.5		50		-	-	-	-	-	-	-

P= pitch of the thread.
Distance from the underside of the head to the first major diameter of the thread within specified limits.
See ISO 7721.
Length of incomplete thread.
Sizes with lengths marked with a dash (一) in the table shall not be manufactured.