Stainless Hex Washer Head Self Drilling Screws for Connection
The screw is the use of the object's beveled circular rotation and friction of physics and mathematical principles, step by step
fastening tools.Drill screw is a screw with a self-tapping drilling head at the front of the screw.Screw is a common invention in
people's production and life for thousands of years. In terms of application field, it is the first great invention of human
beings.Drill screw is a new invention in recent years, also called self - drilling screw.Screw is the general term of fasteners, the
daily colloquial language.
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Q: Are you trading company or manufacturer ?
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=10000USD, 100% in advance. Payment>=10000USD, 50% T/T in advance ,balance before ship