Technical Tests
Rigorous tests are done by independent bodies including Loughborough University to ensure Polytops perform to the highest standard of quality. See pull out tests & torque test data below.
Polytop® Pin & Nail Strength resistance pull out tests |
Sample |
Ave pull out force |
Max pull out force |
Min pull out force |
25mm Pin |
68kg |
75kg |
57kg |
40mm Nail |
140kg |
168kg |
124kg |
65mm Nail |
295kg |
315kg |
275kg |
Polytop® Screw Torque Test |
Sample |
Substrate |
Pilot Hole |
Required Torque |
Failed Torque |
8 gauge x 12mm |
Wood end grain |
2.5mm |
0.7 N.m. |
3.6 N.m. |
8 gauge x 30mm |
" |
2.5mm |
0.9 N.m. |
4.1 N.m. |
8 gauge x 12mm |
Wood cross grain |
2.5mm |
0.8 N.m. |
3.8 N.m. |
8 gauge x 30mm |
" |
2.5mm |
0.9 N.m. |
4.0 N.m. |
8 gauge x 12mm |
3mm Mild steel plate |
3.5mm |
2.7 N.m. |
4.0 N.m. |
8 gauge x 30mm |
" |
3.5mm |
2.9 N.m. |
3.7 N.m. |
The tests were conducted using calibrated torque wrenches S/No. TF/100 (1-35 lbs.in.) and S/No. TF99 (240 lbs.in.)
