DIN 7343 Spring Tubular Pin

DIN 7343 standard applies to the manufacture of coiled cylindrical pins with chamfers on both ends. The outer diameter ranges from 1 to 8 mm. These fasteners are used to secure parts in mechanisms and protect them from displacement; the pin is inserted into a prepared hole of the required diameter.

Shank length — from 4 to 50 mm.

Pins are made of carbon steel with or without protective coating, as well as of stainless steels — such fasteners resist corrosion for a long time.

a	0.3	0.5	0.7	0.8	0.9	1.1	1.3	1.5	2
d₂*	0.95	1.4	1.9	2.4	2.9	3.9	4.85	5.85	7.8
s	0.08	0.13	0.17	0.21	0.25	0.33	0.42	0.5	0.67
l	d₁
	1	1.5	2	2.5	3	4	5	6	8
4	+	+	+
5	+	+	+	+
6	+	+	+	+
8	+	+	+	+	+	+
10	+	+	+	+	+	+	+
12	+	+	+	+	+	+	+	+
14	+	+	+	+	+	+	+	+
16		+	+	+	+	+	+	+	+
18			+	+	+	+	+	+	+
20			+	+	+	+	+	+	+
22				+	+	+	+	+	+
24				+	+	+	+	+	+
26					+	+	+	+	+
28					+	+	+	+	+
30					+	+	+	+	+
32					+	+	+	+	+
35							+	+
36						+	+		+
40						+	+	+	+
45						+	+	+	+
50							+	+	+