POLYTOPS® Bi-Hex Head Socket Screws are available with a less typical bi-hexagonal head. These tamper resistant fasteners can not be removed with conventional hex sockets yet can be quickly and easily applied by hand using a point socket for all common formats of screws.

What is a Bi-Hex Head Socket Screw

There are two types of hex sockets — six-point (or Hex Head Socket Screws) and 12-point (Bi-Hex Head Socket Screws). The six-point hex socket has six points or angles inside the bolt end. The 12-point socket (bi-hex), has 12 angles in the bolt end. The bi-hex is able to fit over a hexagonal bolt head in twice as many positions as the regular hex socket, so it’s a good choice for working in tight spaces.

Available in a range of materials and all common formats, the bi- hex head is also manufactured in all our standard colours. This security led product is suitable across a wide range of applications:

Our POLYTOPS® Bi-Hex Socket screws are used in:

  • Secure sign fixing
  • Retail displays
  • Public lighting
  • Street furniture
  • Portable buildings
  • Enclosures

SEAC can help colour match the plastic you want for our POLYTOPS® Bi-Hex Head Socket Screws (prices on application)

Contact us for more information


Additional Information

Screw TypeMaterialsGaugeLength
Wood ScrewA2 Stainless Steel, Zinc plated*3.5mm, 4.2mm, 4.8mm, 5.5mm10mm -65mm
Self TappingA4 Stainless Steel, A2 Stainless Steel, Zinc plated*3.5mm, 4.2mm, 4.8mm, 5.5mm10mm -65mm
Self DrillingZinc plated*3.5mm, 4.2mm, 4.8mm, 5.5mm10mm -65mm
Machine ScrewsA2 Stainless Steel, Zinc Plated*M3.5, M4, M5, M610mm- 65mm
*Zinc plated is made for indoor usage only. It is not suitable to be used outside.
Box Size
Minimum Order
1000 per type, size & colour