self drilling screws

Product name: Self Drilling Screw Standard: ASME B18.6.4 & SAE J78 DIN7504K， DIN7504P，DIN7504N Size: #4(2.8)-1/2" Material: Carbon Steel, Alloy Steel, Stainless Steel Length: 10-180mm (3/8”- 7”) Head type: Hex , Flat, Pan, Truss, Round, Hex washer, Oval, Pan framing, Bugle, Fillister Drive type: Phil, slotted, Phil & slotted combination, hex socket, Pozi Screw type: BSD, CSD Finish: Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G

Hex washer head self-drilling screws are mechanical basic parts and are in great demand. Usually self-drilling screws are used to ensure safety or generally do not consider the adverse effects of temperature or other dangerous conditions. Commonly used materials are carbon steel and stainless steel. However, in certain occasions, fastener materials need to meet severe corrosion or high strength conditions, and many stainless steel and ultra high strength stainless steels have emerged.

When using countersunk head self drilling screws, there is no need for auxiliary machining on the surface and inside of the connected parts. The countersunk head self drilling screws can be drilled directly on the setting materials and foundation materials, tapping and locking, and can be quickly completed. It can be quickly and automatically drilled and directly rotated. Tightly fixed; the construction efficiency of self-drilling screws is extremely high; the construction time is saved to the utmost extent, the engineering construction efficiency is improved, and the economic benefit of the boss is improved.

The pan head self-tapping screw is composed of two parts: a head type and a thread type. Pan head is a type of head that is very common in our daily life, referred to as P head. The head groove type can be designed as a cross groove, a plum blossom groove, an addition and subtraction groove, a hexagonal groove, and the like. The common materials for pan head tapping screws are carbon steel and stainless steel. No matter which material, we can customize it according to your needs.

The tail of the truss head self-drilling screw is drill-tailed or pointed-tailed, which does not require auxiliary processing. It can directly drill, tap and lock on the setting materials and foundation materials, which greatly saves construction time. Compared with ordinary screws, the self-drilling screws have higher toughness and maintaining force, and the long time after combination is not loose. The use, safe drilling and tapping are completed at one time, and the operation is simple.

The plating of the self-drilling screw of the cross recessed countersunk head generally refers to the plating of the iron Phillips screw. The stainless steel Phillips screw is rarely plated. The color of the Phillips screw plating is environmentally friendly and non-environmental. The environmental protection plating color has environmental protection white. Zinc, environmentally friendly blue zinc, environmentally friendly color zinc, environmentally friendly black zinc, environmentally friendly white nickel, etc., non-environmental white nickel, white zinc, color zinc, black zinc, black nickel, black, blue zinc.

The drill tail screw is a kind of wood screw. The drill tail screw is a screw with a self-tapping drill head at the front end of the screw, also called a self-drilling screw. According to the different types of drill tails, it can be divided into: round head rice / cross / plum, countersunk head (flat head) / rice / cross / plum, hexagonal Huashi, round head Huasi (large flat head), trumpet head and so on.

The hex head self-drilling screw is used in the assembly to drill the hole and simultaneously form or cut the thread connected to itself, and the screw itself does not deform and trip.

The Phillips pan head drilling screw is used for non-metal or soft metal without the need for low hole and tapping; the self-drilling screw is pointed so that it can be "self-drilling"; the hole drilled is a hole that does not require tapping. The screws used are different from the general ones. The heads are pointed and the thread are relatively large. They are similar to the chipless tapping. They can be screwed directly without tapping. Metal and plastic usually use this method. The main function of the self-tapping screws is that they do not need to be used with the nuts. In terms of cost, a large number of them are saved. There is no need to cost the nut.