Torx CSK Self-Tapping Screw Description

 

A Torx CSK (Countersunk) Head Self-Tapping Screw is a threaded fastener engineered to create its own mating thread in materials like metal, wood, or plastic, eliminating the need for pre-drilling. It features a flat, conical head that allows the fastener to drive completely flush with the surface for a smooth finish. The star-shaped (Torx/six-lobe) drive provides superior engagement, preventing bit slippage and enabling higher installation torque.

Typical Dimensions (varies as per standard):

Size Chart	Diameter (D mm)	Length mm
#4	2.9mm	6.5, 9.5, 13, 16, 19
#6	3.6mm	6.5, 9.5, 13, 16, 19, 25, 32
#8	4.2mm	9.5, 13, 16, 19, 25, 32, 38, 50
#10	4.8mm	9.5, 13, 16, 19, 25, 32, 38, 50
#12	5.5mm	9.5, 13, 16, 19, 25, 32, 38, 50
#14	6.4mm	16, 19, 25, 32, 38, 50

 

---

 

Key Features:

 

• Self-Tapping Design – Forms its own thread upon insertion, significantly reducing assembly time.

• CSK (Countersunk) Head – Conical head allows for flush mounting, providing a neat, non-protruding finish.

• Torx (Six-Lobe) Drive – Offers the best resistance to cam-out (slippage) and transmits maximum torque, ideal for driving into hard materials.

• Sharp Pointed Tip – Facilitates quick and easy piercing and starting into the substrate material.

• Versatile Applications – Preferred in woodworking, furniture assembly, automotive interiors, and applications requiring high security and a clean, hidden head finish.