Carbon Steel 4.8 5.8 drive Painted Hex Head Self Drilling Screws and washers 
 

Description:

Self drilling screws, also known as Tek screws, are fasteners with a special pointed end style that allows them to penetrate thin materials without a starting or pilot hole. Also known as selftapping screws or self drilling bolts, they cut or form threads to engage with the mating material. 

Self Drilling screws, which the tail is sharp end or the drill,. Without the aid of processing, the screws can be set up on the base material, direct drilling, tapping, locking, significant which can save much construction time. For more common screws, the screws maintain high power. After long time of the combination is not loose, the use of safe drilling tapping once simple operation.

Uses: It is a wood screw, mainly used in steel steel tile fixing can also be used for sheet simple building fixed. It can not be used for metal to metal bonded and fixed.

The head drive have hex washer head, pan head, CSK head and flat head, truss head. The thread is, for example, #8-18, #11-16. For the type of frill, it has #2 and #3.

Materials which is divided into a variety of materials, are iron, or stainless steel.

Models: Φ4.2 / Φ4.8 / Φ5.5 / Φ6.3mm, specific length agreed upon request.

Depending on the drilling tail can be divided into:

Round Yonago / Phillips / plum, countersunk head (flat head) / sub m / Phillips / plum, hex washer, round washer (flat head), Budge Head.