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TX Pan Head Thread Forming Screw for Plastic

SKU: TFS10 Category:

FasPlas TX Pan thread forming screws, also known as 6 Lobe or Star Drive, are designed specifically for use with plastics and other soft materials.

  • TX / 6 Lobe Drive – offers high torque and cam-out resistance
  • Choice of 30° and 45° thread angle
  • Range of diameters and thread lengths
  • Manufactured in steel zinc or zinc & black, with stainless steel also available.

TX Pan threadforming screws are available in 30° and 45° thread angles giving a choice depending on the appropriate level of resistance required. They are an economic solution for fastening into plastic and are installed into pre-drilled or moulded holes, forming a mating thread as they are fastened into the material. Threadforming screws actually displace the material as they are fastened rather than removing it, which means they are a cost effective choice leaving no mess after installation. This shouldn’t be confused with thread cutting screws that do remove material by cutting into it.

FasPlas TX Pan threadforming screws come in a variety of sizes in a range of diameters and lengths. As well as being available in various sizes they are also manufactured in different finishes – zinc steel, black steel and stainless steel.

All stocked sizes are listed below. FasPlas TX Pan thread forming screws are available to order in non-standard sizes and finishes, including small volume manufacture, modifications and custom parts to drawings.

30° Flank Angle 45° Flank Angle
Diameter /
Length (mm)
2.2 2.5 3 3.5 4 5 6 2.5 3 3.5 4 5
5  prod-tri-spacer
6
8
10
12
14
16
18
20
25
30
= Steel (Zinc or Black Zinc)
= Stainless Steel

Thread Forming Screws – Design Considerations

When specifying thread forming screws for plastics, these factors should be considered:

  • Hole size and design
  • Type, grade and thickness of plastic
  • Installation depth
  • Required application and strip out performance

Standard dimensions are as below, although additional sizes and custom made thread forming screws are available.

TX Pan Threadforming screw technical drawing

30° Flank Angle 45° Flank Angle
D Diameter 2.2 2.5 3 3.5 4 5 6 2.5 3 3.5 4 5
C – max 2.55 3.05 3.55 4.06 5.06
D1 – max 4.0 4.20 5.60 6.90 7.50 8.20 10.80 4.00 5.00 6.00 7.00 8.00
K 1.50 1.60 2.10 2.30 2.60 2.90 3.80 1.60 1.95 2.30 2.45 2.80
Recess T6 T7 T10 T10 T20 T20 T25 T6 T8 T10 T15 T20

*For guidance purposes only