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Plasti-Fast high performance thread rolling screws are designed for secure and reliable fastening in thermoplastic materials.
A 48' thread feature reduces displacement of plastic for less internal stress and less tendency to fracture bosses. Better drive/ strip ratio and strip torque are obtained when compared with conventional Type B tapping screws. Extended lobes (clearly visible with 10 power magnification) and full 360' thread engagement provide low driving torque and better holding power. |
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Features
- All standard head styles and drive systems, including Phillips and Torx® recesses
- Better drive/strip ratio and strip torque than Type B screws
- 48° thread reduces displacement of plastic for less internal stress and less tendency to fracture bosses
- 1018 or 1022 steel, heat-treated for durability & strength
- Available in all popular electro, mechanical, or chemical finishes
- Extended lobes (clearly visible with 10 power magnifier) for 360° thread engagement, easy driving and better locking
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Application Data
| Screw Size |
Threads Per inch |
D - Thread Diam (mm) |
Pilot Hole Diam (mm) |
| 4-24 |
24 |
.112-.123 |
.102 |
| 6-20 |
20 |
.137-.143 |
.120 |
| 8-16 |
16 |
.173-.179 |
.154 |
| 10-16 |
16 |
.202-.206 |
.180 |
| 12-14 |
14 |
.220-.226 |
.203 |
| 14-14 |
14 |
.262-.268 |
.238 |
*Double Lead Thread data shown. Single Lead also available upon request.
LENGTH TOLERANCES
through 3/4", +/-.030; over 314", +/-.050
**Pilot hole sizes shown for guidance only. Proper hole size depends on engagement depth, driving torque and material. Tests to determine proper hole diameter should be made for each specific application. Engagement should be a minimum of two times screw diameter (D). Chamfer all pilot holes. Minimum outside dimension of boss should be at least three times the diameter of the pilot hole.
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