Active Member
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[China]
Address: No.26 Zhijiang Road, Lanjiang Street, Yuyao City, Zhejiang Province, China
Contact name:Daisy
Ningbo OuKaiLuo Hardware Co.,Ltd. |
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Carbon Steel Phillips Pan Head Self Tapping Screw ST4.2
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Product Description
Self-tapping screws drill their own holes when they’re screwed into materials such as wood, plastic and metal. By using a screwdriver to attach a self-tapping screw, you can create precisely fitted threads. They're ideal for combining two different types of materials or for screwing in areas where access is only one-sided. It’s helpful to use self-tapping screws for products that need to be maintained regularly, such as air-conditioning units or canopies, where you need to dissemble and reassemble the item along the same threads.
Self-tapping screws come in all sizes and tip types, and they have various shaped heads. When you choose the right size self-tapping screw, you should take into account the length of the screw tip, according to the material’s thickness. There must be enough space for the tip of the drilled screw to fully enter the material before the threading begins. Otherwise the driving in of the screw will cause thread stripping and the end result won’t be properly secure.
Raw Material: Carbon Steel
Carbon steel is a steel with carbon content up to 2.1% by weight.
The purpose of heat treating carbon steel is to change the mechanical properties of steel, usually ductility, hardness, yield strength, or impact resistance.
Case hardening processes harden only the exterior of the steel part, creating a hard, wear resistant skin (the "case") but preserving a tough and ductile interior.
Galvanization
Galvanization (or galvanizing as it is most commonly called in that industry) is the process of applying a protective zinc coating to steel or iron, to prevent rusting.
FAQ
Q: How about your price?
A: High quality products with reasonable price. Please give me a inquire, I will quoted you a price for you refer at once.
Q: How do you control your quality?
A: We have our in-house QC daily and hire third party for randomly inspection.
Q: Could you provide free samples?
A: For our regular products, we offer free samples. For customized bolts, tooling and moulding charges need. All free samples not including its courier charge.
Q: What is your terms of payment ?
A: We can accept T/T,L/C for general order ,Paypal and Western union for small order or samples order.
Q: What is your packing?
A: 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’ requests.
If you are interested in self tapping screw, Please do not hesitate to email us or call us. Our professional team will assit you to purchased the quality products.
