Tornillos de rosca, cabeza ranurada elevada

Dibujos dimensionales y diagramas técnicos

1747_txpJh3_bs_4174_12.jpg

Dimensiones clave y parámetros técnicos

Dimensions in mm - source BS 4174 Table 12 80° slotted raised countersunk head tapping screws:

Publication date: 10 - 1972

Ø thread size
dk min
dk mx
k max
t nom
n min
n max f nom
ST 2.2
3.73 4.37 1.3 1.04 0.58 0.79 0.64
ST 2.9
4.95 5.71 1.7 1.37 0.79 0.99 0.84
ST 3.5
6.2 7.09 2.11 1.7 0.99 1.22 1.02
ST 4.2
7.42 8.43 2.54 2.03 1.14 1.37 1.22
ST 4.8
8.64 9.78 2.95 2.39 1.27 1.52 1.4
ST 5.5
9.88 11.13 3.35 2.72 1.402 1.7 1.6
ST 6.3
11.48 12.88 3.89 3.15 1.63 1.9 1.83
ST 8 14.43 16.13 4.85 3.96 1.83 2.13 2.29