ISO 4757 - Cross recesses for screws

Cross recessed SCREW - ISO 4757


Sizes



Cross recess H

Dimensions in mm
The size of the groove 0 1 2 3 4
b 0
- 0,03
0,61 0,97 1,47 2,41 3,48
e 0,26-0,36 0,41-0,46 0,79-0,84 1,98-2,03 2,39-2,44
g +0,05
0
0,81 1,27 2,29 3,81 5,08
f 0,31-0,36 0,51-0,56 0,66-0,74 0,79-0,86 1,19-1,27
r nominal size 0,3 0,5 0,6 0,8 1
t1 reference 0,22 0,34 0,61 1,01 1,35
α 0
-15°
1) 138° 140° 146° 153°
ß +15 0 5°45’ 5°45’
1) The angle is replaced with a radius r min = 0.25 mm, 0.36 mm = Rmax
The figures in the table are calculated values


Sizes



Cross groove Z

Dimensions in mm
The size of the groove 0 l 2 3 4
b 0
-0,05
0,76 1,27 1,83 2,72 3,96
f 0
-0,025
0.48 0,74 1,03 1,42 2,16
g 0
-0,05
0,86 1,32 2,34 3,86 5,08
r1 max. 0,30 0,30 0,38 0,51 0,64
r2 max. 0,10 0,13 0,15 0,25 0,38\
j max. OJ
3
0,15 0,15 0,20 0,20
α +15°
0
5°45’ 5°45’
ß 0
-15°
7°45’ 7°45' 6°20’ 6°20’ 7°45’
γ 0
15°
4°23" 4°23’ 4°23’
δ 0
-7°
46° 46° 46° 56°15’ 56°15’
The figures in the table are calculated values