Hi-Lo® And Hi-Lo® Plus™ Fasteners Drive/Strip Torques
Screws For Plastic And Other Low Density Materials
Because the Hi-Lo screw and the Hi-Lo Plus screw displace less material when driven, they require lower driving torques. As more material remains between the threads, both types of screws absorb more torque without stripping. With this dramatic increase in the safe driving range (drive vs. strip torque), these screws can be driven easily and consistently without stripping problems and without constant fine tuning of power drivers.
The Hi-Lo Plus fastener, with both high and low sharper angle threads, has the greatest ability to absorb driving torques and consequently the greatest safe driving range.
3/8 ABS
| SCREW SIZE |
.120 HOLE DIA. DRIVE | .120 HOLE DIA. STRIP | .120 HOLE DIA. DIFF. | .128 HOLE DIA. DRIVE | .128 HOLE DIA. STRIP | .128 HOLE DIA. DIFF. | .136 HOLE DIA. DRIVE | .136 HOLE DIA. STRIP | .136 HOLE DIA. DIFF. | .144 HOLE DIA. DRIVE | .144 HOLE DIA. STRIP | .144 HOLE DIA. DIFF. | .152 HOLE DIA. DRIVE | .152 HOLE DIA. STRIP | .152 HOLE DIA. DIFF. |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 7-19 HILO | 3.7 | 24.6 | 20.9 | 2.8 | 20.7 | 17.9 | |||||||||
| 7-21 PLUS | 5.1 | 33.3 | 28.2 | 4 | 31 | 27 | 2.5 | 23.2 | 20.7 | ||||||
| 8-18 HILO | 4.1 | 35.4 | 31.3 | 2.8 | 26.3 | 23.5 | 2.3 | 21.2 | 18.9 | 1.5 | 15.1 | 13.6 | |||
| 8-19 PLUS | 5.7 | 40.7 | 35 | 4.7 | 41 | 36.3 | 3.8 | 35.8 | 32 | 2.3 | 24 | 21.7 | |||
| 10-16 HILO | 5 | 36.5 | 31.5 | 3.7 | 32.4 | 28.7 | |||||||||
| 10-18 PLUS | 8.1 | 51.8 | 43.7 | 6 | 51.1 | 45.1 |
3/8 NYLON
| SCREW SIZE |
.128 HOLE DIA. DRIVE | .128 HOLE DIA. STRIP | .128 HOLE DIA. DIFF. | .136 HOLE DIA. DRIVE | .136 HOLE DIA. STRIP | .136 HOLE DIA. DIFF. | .144 HOLE DIA. DRIVE | .144 HOLE DIA. STRIP | .144 HOLE DIA. DIFF. | .152 HOLE DIA. DRIVE | .152 HOLE DIA. STRIP | .152 HOLE DIA. DIFF. |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 7-19 HILO | 3.6 | 26.1 | 22.5 | 3 | 19.2 | 16.2 | ||||||
| 7-21 PLUS | 6.7 | 41.6 | 34.9 | 4.3 | 29.5 | 25.2 | ||||||
| 8-18 HILO | 6.6 | 35.5 | 28.9 | 5.2 | 30.1 | 24.9 | 3.5 | 19.9 | 16.4 | |||
| 8-19 PLUS | 10.5 | 54.4 | 43.9 | 7.5 | 48.6 | 41.1 | 4.3 | 33.6 | 29.3 | |||
| 10-16 HILO | 5 | 36.5 | 31.5 | 3.7 | 32.4 | 28.7 | ||||||
| 10-18 PLUS | 8.1 | 51.8 | 43.7 | 6 | 51.1 | 45.1 |
Note:Tests on 4-26 and 6-22 HI-LO screws, even in thinner materials such as .0995” and .010” thick, showed comparable drive
torque/strip torque relationships. Data available on request.
torque/strip torque relationships. Data available on request.
