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Countersunk flat head torx screw

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Product Description

 ISO 14581-2013(E) Torx screw 

Hexalobular socket countersunk flat head screws

Hexalobular internal driving feature ISO 10664-2014

Mechanical property ISO 898-1:2013(E)

Class 4.8 . 8.8

Marking NE 04.8 / 08.8

Raw material : 1010 . 10B21


Thread,d

M2M2.5M3M3.5M4M5M6M8M10
without shoulderwith shoulder
pb0.40 0.45 0.50 0.60 0.70 0.80 1.00 1.25 1.50 
b   min.252525383838383838
dktheoretical max.4.45.56.38.29.410.412.617.320
dkactual max.3.84.75.57.38.49.311.315.818.3
dkactual min.3.54.45.26.948.048.9410.8715.3717.78
kc   max.1.21.51.652.352.72.73.34.655
r   max.0.50.60.80.911.31.522.5
x   max.11.11.251.51.7522.53.23.8
Socket no.6810152025304550
A ref.1.752.42.83.353.954.55.67.958.95
t   max.0.640.790.831.321.531.511.782.542.8
t   min.0.510.660.71.161.141.121.392.152.41


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