Self Drilling Screw

Self Drilling Screw Parameter

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
Supply Ability:	5000 tons per month
Minimum Order:	500kgs for each specification
Trade Term:	FOB/CIF/CFR/CNF/EXW/DDU/DDP
Notice:	Please lets know the Size, quantity, Material or Grade, surface, If it is special and Non-standard products, please supply the Drawing or Photos or Samples to us

Self Drilling Screw Description

What is a self drilling screw?
Whichever name is used, these names are for screws that form mating threads (“tapping” the threads) in a pre-drilled hole in the substrate into which they are driven. A Self-Drilling Screw is a Self-Tapping Screw with the added feature of a drill point. ... If a screw will drill its own hole it is a Self-Drilling Screw

What are self drilling screws used for?
Self drilling screws have a point that acts as a drill bit and sharp cutting threads that tap the hole during installation. Self drilling screws are a commonly used variety of screw for quick drilling into both metal and wood. A self drilling screw can typically be identified by its point and flute (notch) tip.

What is the difference between a self tapping screw and a self drilling screw?
Self-drilling screws eliminate the need for a pilot hole, but can tap as well. Self-tapping screws tap their own threads, but cannot drill through metal and require a pilot hole.

What does a self drilling screw look like?
Self-Drilling: Similar to the self-tapping, it has a drill shaped point which allows it to cut through thick and hard material without having to drill a pilot hole. Self-Piercing: This screw has the ability to pierce the material at sharp angles. Between 25 to 30 degrees at high speeds.

Can self drilling screws be used on metal?
The sharp-tipped screws are designed for drilling their own hole into softer materials such as wood and plastic so they don't need a pilot hole. ... For thicker metal, it may require more than one screw to drill through the surface. To save time and labor, you can use self-drilling self-tapping screws to drill into metal.

Self-tapping screws are ideal for drilling into metal and other hard materials, but are not useful for soft materials — such as wood — that require the screw to force a path into the material for increased holding strength. Self-tapping screws are more dependable for installing into stone or brick.