Grade8.8 Steel Color Zinc Plated Self Drilling Roofing Screw
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A screw, or bolt, is a type of fastener, typically made of metal, and characterized by a helical ridge,known as a male thread (external thread) or just thread, wrapped around a cylinder. Some screwthreads are designed to mate with a complementary thread, known as a female thread (internal thread),often in the form of a nut or an object that has the internal thread formed into it. Other screwthreads are designed to cut a helical groove in a softer material as the screw is inserted. The most commonuses of screws are to hold objects together and to position objects.A screw will almost always have ahead on one end which contains a specially formed shape that allows it to be turned, or driven, with atool. Common tools for driving screws include screwdrivers and wrenches. The head is usually largerthan the body of the screw, which keeps the screw from being driven deeper than the length of thescrew and to provide a bearing surface. There are exceptions; for instance, carriage bolts have adomed head that is not designed to be driven; set screws often have a head smaller than the outerdiameter of the screw; J-bolts have a J-shaped head which is not designed to be driven, but rather isusually sunk into concrete allowing it to be used as an anchor bolt. The cylindrical portion of the screwfrom the underside of the head to the tip is known as the shank; it may be fully threaded orpartially threaded.
| Product Name |
CSK philip screw,CSK socket screw.Pan head Phscrew,Pan head socket
screw,Socket cap head screw, set screw,Pan head torx screw,
CSK head trox screw,Wood screw |
| Standard: |
DIN,ASTM/ANSI JIS EN ISO,AS,GB |
| Material |
Stainless Steel: SS201, SS303, SS304, SS316,SS316L,SS904L |
| Carbon steel:1010,1022, |
| Finishing |
Zinc(Yellow,White,Blue,Black),Hop Dip Galvanized(HDG)
phosphorization,
Black Oxide,Geomet,Dacroment,anodization,Nickel plated,Zinc-Nickel
plated |
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Customized Products
Lead time |
Busy season:15-25days,Slack seaon:10-15days |
| Stock Products |
Stainless steel: All DIN ,GB Standard and part ASNI standard
stainless steel
screws, Example: ISO7380,DIN7981,DIN7982,DIN916,DIN913,
DIN7985,DIN912 |
| Free Samples for standard fastener |
| For more information visit:hainafastener.en.made-in-china.com |
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Our Services
Professional 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
Certificate
RFQ
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.
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