DIN 7343

Spring-type straight pins - coiled

Standard Duty

tech-din7343




Nominal Diameter
d		 Φ0.8 Φ1 Φ1.2 Φ1.5
α ≈ 0.2 0.3 0.4 0.5
s 0.07 0.08 0.1 0.13
d min=nominal size 0.85 1.1 1.3 1.62
max 0.9 1.15 1.4 1.72
d2 max=nominal size 0.75 0.95 1.15 1.4
min 0.7 0.85 1.05 1.3
Minimum shear strength, single (kN) 0.2058 0.294 0.441 0.7154
Minimum Double Shear,kN 0.4116 0.588 0.882 1.4308

Nominal Diameter Φ2 Φ2.5 Φ3
α ≈ 0.7 0.8 1
s 0.17 0.21 0.25
d min=nominal size 2.15 2.65 3.15
max 2.25 2.8 3.3
d2 max=nominal size 1.9 2.35 2.85
min 1.75 2.2 2.7
Minimum shear strength, single (kN) 1.2642 1.9012 2.7048
Minimum Double Shear,kN 2.5284 3.8024 5.4096

Nominal Diameter Φ3.5 Φ4 Φ5
α ≈ 1.2 1.3 1.7
s 0.29 0.33 0.42
d min=nominal size 3.67 4.2 5.25
max 3.84 4.4 5.5
d2 max=nominal size 3.35 3.8 4.8
min 3.15 3.6 4.5
Minimum shear strength, single (kN) 3.6946 4.8314 7.4872
Minimum Double Shear,kN 7.3892 9.6628 14.9744

Nominal Diameter Φ6 Φ8 Φ10
α ≈ 2 3 3
s 0.5 0.67 0.84
d min=nominal size 6.25 8.35 10.45
max 6.5 8.6 10.8
d2 max=nominal size 5.8 7.75 9.6
min 5.4 7.25 9
Minimum shear strength, single (kN) 10.829 19.208 30.4976
Minimum Double Shear,kN 21.658 38.416 60.9952

Nominal Diameter Φ12 Φ14 Φ16
α ≈ 4 4.5 5
s 1 1.2 1.3
d min=nominal size 12.5 14.55 16.55
max 12.85 14.95 17
d2 max=nominal size 11.5 13.5 15.4
min 10.8 12.6 14.4
Minimum shear strength, single (kN) 43.953 60.3876 74.529
Minimum Double Shear,kN 87.906 120.7752 149.058



1dimensions before installation
2sher strength, double kN, only for spring steel
*not standardized, reference values


All information is strictly informative