Китай Поставщик DIN571 Половина резьбы Нержавеющая сталь Древесина Lag винты
A self-tapping screw is a screw that can tap its own hole as it is driven into it. For hard substrates
such as metal or hard plastics, the self-tapping ability is often created by cutting a gap in the continuity of the thread on the screw, generating a flute and cutting edge similar to those on a tap. Thus, whereas a regular machine screw cannot tap its own hole in a metal substrate, a self-tapping one can (within reasonable limits of substrate hardness and depth). For softer substrates such as wood or soft plastics, the self-tapping ability can come simply from a tip that tapers to a gimlet point (in which no flute is needed). Like the tip of a nail or gimlet, such a point forms the hole by displacement of the surrounding material rather than any chip-forming drilling/cutting/evacuating action.
Some self-tapping screws are also self-drilling, which means that, in addition to the tap-like flute in
the leading threads, there is also a preliminary drill-like fluted tip that looks much like the tip of a center drill . These screws combine a thrilling-like action and the fastener installation itself into only one driving motion (instead of separate drilling, tapping, and installing motions); they are thus very efficient in a variety of hard-substrate applications, from assembly line to roofing.Self-tapping screws are used in a variety of applications ranging from DIY carpentry to surgery.Many dental implants and orthopedic bone screws are examples of self-tapping screws used in surgery.
China Supplier DIN571 Half Thread Stainless Steel Wood Lag Screws
Stainless steel: All DIN ,GB Standard and part ASNI standard stainless steel screws, Example: ISO7380,DIN7981,DIN7982,DIN916,DIN913,DIN7985,DIN912,DIN571
Free Samples for standard fastener
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Professiona Manufacturer: All of our Fastener are designed and manufactured according to buyers’ specification and performance.
Quality is guaranteed: Durability testing and critical technical design to enhance fasteners lifetime.
Cost effective: Competitive prices with professional factory supply
Perfect fastening solution with 10 years experiences to solve your problem: Wide range of parts selection.
Customized Ideal Fasteners: customized services according to the samples and drawings offered.
1.How do you let me trust you.
We have own import & export right, and we are Gold mumber of alibaba and made in china, We get credit guarantee from Alibaba Group. you can make an order by alibaba to us directly.
2.How about your price.
High quality products with reasonable price. Please give me a inquire, I will quoted you a price for
you refer at once.
3. How do you control your quality.
We request QC inspect every productions links for each bacth goods.And we can provide you MTC and mill certificate when the goods is finished.
4.Could you provide free samples?
For new customer, We can provide free samples for standard fastener, But the clients will pay the express charges. For old customer,We will send you free samples and pay express charges by ourself.
5.Do you accept small order?
Sure, we can accept any orders, we keep lots of stock for ALL STAINLESS STEEL FASTENER, CARBON STEEL NUT AND PART BOLT,Like hex weld nut, cage nut, wing nut, square weld nut,cap nut, hex nut,flange nut.Metric 8.8Grade,10.9Grade 12.9Grade Hex bolt and Hex Socket cap screw,Part ASME Hex cap screw.
6.How about your delivery time
General speaking, if the goods is in stock, we can delivery them with 2-5days, If the quantity is 1-2container, we can give you with 18-25days,if the quantity is more than 2 container and you are
very urgent, we can let factory priority produce your goods.
7.What is your packing.
Our packing is 20-25kg for one carton,36 or 48pcs cartons for one pallet. One pallets is about 900-960kg, We also can make customer’s logo on the cartons. Or we customized cartons according to customers’ requestment
8.What is your payment term
We can accept T/T,LC for general order ,Paypal and Western union for small order or samples order.