Table 9.
Result of withdrawal-resistance for tapping screw and Sherpa screw
Specimen symbol
σ
w
(N/mm)
5 Percentile
(N/mm)
W
(N/mm)
Percentage of W
c
/W
s
(%)
6.3TL-S
6.3TL-C
264.7
171.4
215.5
128.8
107.8
64.4
59.7
8.0SL-S
8.0SL-C
276.6
173.0
216.9
113.6
108.5
56.8
52.4