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Spring Pins (Excerpt from JIS B 2808:2013)

Shapes and Dimensions of General Load Slotted Spring Pins

The diameter of the spring pin mounting hole is the same as the nominal diameter of the spring pin. The dimensional tolerance of the mounting hole is H12 as regulated in JIS B 0401-1.
When inserting the spring pin into the mounting hole, the slot edge must not be in contact with the entire surface.
There is no chamfering amount (a) standard for general load slotted spring pins.

Notes

The outer diameter of slotted spring pins depends on the following.
Maximum value of outer diameter d1: The maximum value of the outer diameter on the pin circumference.
Minimum value of outer diameter d1: The average outer diameter value of D1, D2, and D3 on the pin circumference.

General load

Unit: μm

Nominal diameter		1	1.2	1.4	1.5	1.6	2	2.5	3
Pre-mount d1	Max.	1.2	1.4	1.6	1.7	1.8	2.25	2.75	3.25
Pre-mount d1	Min.	1.1	1.3	1.5	1.6	1.7	2.15	2.65	3.15
Chamfer diameter d3	Max.	0.9	1.1	1.3	1.4	1.5	1.9	2.4	2.9
Thickness s		0.2	0.25	0.28	0.3	0.3	0.4	0.5	0.6
Shear strength^a) Minimum value (kN)		0.69	1.02	1.35	1.55	1.68	2.76	4.31	6.2
Mounting hole		1	1.2	1.4	1.5	1.6	2	2.5	3
Dimensional tolerance (H12)		+0.10 0

Nominal diameter		4	5	6	8	10	13
Pre-mount d1	Max.	4.4	5.4	6.4	8.6	10.6	13.7
Pre-mount d1	Min.	4.2	5.2	6.2	8.3	10.3	13.4
Chamfer diameter d3	Max.	3.9	4.8	5.8	7.8	9.8	12.7
Thickness s		0.8	1.0	1.2	1.6	2.0	2.5
Shear strength^a) Minimum value (kN)		10.8	17.25	24.83	44.13	68.94	112.78
Mounting hole		4	5	6	8	10	13
Dimensional tolerance (H12)		+0.12 0			+0.15 0		+0.18 0

Length L^b)	Allowable tolerance	Nominal diameter
Length L^b)	Allowable tolerance	1	1.2	1.4	1.5	1.6	2	2.5	3	4	5	6	8	10	13
4	+0.5 0	○	○	○	○	○
5		○	○	○	○	○	○	○
6		○	○	○	○	○	○	○	○
8		○	○	○	○	○	○	○	○	○
10		○	○	○	○	○	○	○	○	○	○
12	+1.0 0		○	○	○	○	○	○	○	○	○	○
14				○	○	○	○	○	○	○	○	○
16						○	○	○	○	○	○	○	○
18							○	○	○	○	○	○	○	○
20							○	○	○	○	○	○	○	○
22								○	○	○	○	○	○	○	○
25								○	○	○	○	○	○	○	○
28									○	○	○	○	○	○	○
32									○	○	○	○	○	○	○
36										○	○	○	○	○	○
40										○	○	○	○	○	○
45											○	○	○	○	○
50											○	○	○	○	○
56	+1.5 0											○	○	○	○
63												○	○	○	○
70													○	○	○
80													○	○	○
90														○	○
100														○	○
110															○
125															○
140															○

Explanatory note Recommended lengths are shown within the bold lines.

Notes

^a) Shear strength values are compatible with carbon steel and martensitic stainless steel.
^b) Lengths that exceed 140 mm depend on agreements between the parties concerned with acceptance.