ISO 4028

Similar DIN 915

Hexagon socket set screws with with dog point

tech-iso4028




Thread Size
d		 M1.6 M2 M2.5 M3
P Pitch 0.35 0.4 0.45 0.5
dp max 0.8 1 1.5 2
min 0.55 0.75 1.25 1.75
s Nominal Size 0.7 0.9 1.3 1.5
max 0.724 0.913 1.3 1.58
min 0.71 0.887 1.275 1.52
z (short dog point) max 0.65 0.75 0.88 1
min 0.4 0.5 0.63 0.75
(Long dog point) max 1.05 1.25 1.5 1.75
min 0.8 1 1.25 1.5
t① min Short screw 0.7 0.8 1.2 1.2
Long screw 1.5 1.7 2 2
e min 0.809 1.011 1.454 1.733

Thread Size
d		 M4 M5 M6
P Pitch 0.7 0.8 1
dp max 2.5 3.5 4
min 2.25 3.2 3.7
s Nominal Size 2 2.5 3
max 2.08 2.58 3.08
min 2.02 2.52 3.02
z (short dog point) max 1.25 1.5 1.75
min 1 1.25 1.5
(Long dog point) max 2.25 2.75 3.25
min 2 2.5 3
t① min Short screw 1.5 2 2
Long screw 2.5 3 3.5
e min 2.303 2.873 3.443

Thread Size
d		 M8 M10 M12
P Pitch 1.25 1.5 1.75
dp max 5.5 7 8.5
min 5.2 6.64 8.14
s Nominal Size 4 5 6
max 4.095 5.14 6.14
min 4.02 5.02 6.02
z (short dog point) max 2.25 2.75 3.25
min 2 2.5 3
(Long dog point) max 4.3 5.3 6.3
min 4 5 6
t① min Short screw 3 4 4.8
Long screw 5 6 8
e min 4.583 5.723 6.863

Thread Size
d		 M16 M20 M24
P Pitch 2 2.5 3
dp max 12 15 18
min 11.57 14.57 17.57
s Nominal Size 8 10 12
max 8.175 10.175 12.212
min 8.025 10.025 12.032
z (short dog point) max 4.3 5.3 6.3
min 4 5 6
(Long dog point) max 8.36 10.36 12.43
min 8 10 12
t① min Short screw 6.4 8 10
Long screw 10 12 15
e min 9.149 11.429 13.716



z1 and t1 for above the dashed step line
z2 and t2 for below the dashed step line

*step line see product standard
*dimensions acc. to DIN 915


All information is strictly informative