Our Advantages1、 Quality defective rate is 50PPM.2、 ISO 9001 & IATF16949 certified.3、 15+ years manufacturing experience.4、 Have rich experience to cooperated with famous brand , like Porsche 、Tesla、Volvo 、Valeo、Paccar...5、 Providing certificate such as PPAP Level3 、RoHS、MSDS、IMDS etc.6、 Generally Production lead time is 15 days or even less.

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How are self drilling screws measured?

They are measured from the top of the head to the tip. Hex and hex washer head screws and bolts, although flat on the top and the bottom, are measured from the bottom of the head. From that point to the tip is the length of the screw. Self drilling screws are measured all the way to the end of the drill point tip.

Hex Head Self Drilling ScrewHead type:Hex head/Hex Flange Head

Hex Head Self Drilling ScrewHead type:Hex head/Hex Flange Head

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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.

Do you need a pilot hole for self drilling screws? While self-tapping screws will tap a hole into a soft material, self-drilling screws are capable of drilling a hole into anything from metal to wood. This key difference is self-drilling screws have a tip like a drill bit, so they do not need a pilot hole.

What is the difference between self drilling and self tapping screws?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. These screws are not interchangeable, and mixing up the two can cause many headaches or possible failures in the field.

Q1: What is your main products and material supply?1.1. Our main products are Screws,Bolt,Nuts,rivet,Special Non-standard studs,Turning parts and High-end precision complex CNC Machining parts etc.1.2. Carbon Steel, Alloy Steel, Aluminum alloy,Stainless Steel, Brass, Copper ,Titanium alloy or according to your requirement.Q2. When can I get the price?We usually offer you a quotation within 12 hours, and the special offer is not more than 24 hours. Any urgent cases, please contact us directly by phone or send email to us.Q3:If you can not find on our website the product you need how to do?You can send the pictures/photos and drawings of the products you need by email , we will check if we have them. We develop new models every month, Or you can send us samples by DHL/TNT, then we can develop the new model especially for you.Q4:Can You Strictly Follow The Tolerance on The Drawing And Meet The High Precision?Yes, we can, we can provide high precision parts and make the parts as your drawing.Q5: How should I order and make payment?By T/T, for samples 100% with the order；for production, 30% paid for deposit by T/T before production arrangement, the balance to be paid before shipment.Q6: What’s your Delivery Time?Standard parts: 7-15daysNon-standard parts: 15-25daysWe will make the delivery as soon as possible with the guarantee quality.Q7:How to Custom-made (OEM/ODM)If you have a new product drawing or a sample, please send to us, and we can custom-made the hardware as your required. We will also provide our professional advices of the products to make the design to be more realized & maximize the performance.Q8. What is your terms of packing?A: Generally, we pack our goods in neutral Transparent bag/ Color box/ plastic box+ carton. If you have legally registered patent,we can pack the goods in your branded boxes after getting your authorization letters.Q9:Which mode of transport would be better?In general, the production are heavy, we advice to make delivery by sea, Also we respect your views of other transportation as well.How to order?