UNI 6953 Slotted raised countersunk head tapping screws

Equivalent Standards

UNI 6953

Dimensions for UNI 6953 Slotted raised countersunk head tapping screws

Thread p a dk f k n r rf t y max
max nominal=max min approx approx nominal min max max approx min max Type C Type F
ST 2.2 0.8 0.8 4.3 4 0.7 1.3 0.66 0.66 0.8 0.8 3.8 0.95 1.15 2 1.6
ST 2.9 1.1 1.1 5.5 5.2 0.9 1.7 0.86 0.86 1 1.1 4.6 1.25 1.5 2.6 2.1
ST 3.5 1.3 1.3 6.8 6.44 1.2 2.1 1.06 1.06 1.2 1.4 5.4 1.55 1.9 3.2 2.5
ST 3.9 1.3 1.3 7.5 7.14 1.3 2.3 1.06 1.06 1.2 1.5 6 1.7 2.05 3.5 2.7
ST 4.2 1.4 1.4 8.1 7.74 1.4 2.5 1.26 1.26 1.51 1.6 6.6 1.85 2.25 3.7 2.8
ST 4.8 1.6 1.6 9.5 9.14 1.5 3 1.26 1.26 1.51 1.9 8.2 2.15 2.6 4.3 3.2
ST 5.5 1.8 1.8 10.8 10.37 1.7 3.4 1.66 1.66 1.91 2.1 9.4 2.42 2.95 5 3.6
ST 6.3 1.8 1.8 12.4 11.97 2 3.8 1.66 1.66 1.91 2.4 11.1 2.85 3.45 6 3.6