Good Quality Screws And Bolts - Phillip Drive Countersunk Self-tapping Screws – Qijing
Good Quality Screws And Bolts - Phillip Drive Countersunk Self-tapping Screws – Qijing Detail:
What are Cross recessed countersunk head self-tapping screws?
Countersunk self-tapping screws are a type of screw used in a variety of fastening and fixing applications. they are produced in hardened carbon steel with bright zinc plated surface treatment. It is equipped with countersunk head Typically made from stainless steel, countersunk self-tapping screws are characterized by their drill-shaped point. Self-tapping screws tap their own threads but are unable to drill through materials like a sheet of metal. In this case, self-tapping screws would require a pilot hole.
Size
surface treatment
On top of these common core elements, manufacturers can add protective coatings. These finishes protect against corrosion even more. Here are some common coatings for Countersunk self-tapping screws:
Zinc Plating
Zinc plating is where zinc is added using a layer of electricity. It’s usually a thinner layer that works better for indoor applications.
Hot-Dip Galvanization
Hot-dip galvanization adds zinc, but it’s a deeper coating. Manufacturers dunk the bolt in molten zinc to form a bond, which makes the coating especially well-suited for corrosive environments such as areas with high humidity or salt in the air.
Fluoropolymer (Xylan, Teflon, or PTFE) Coating
A fluoropolymer coating is a mixture of elements that are resistant to corrosion. The coating can hold up in extreme hot and cold temperatures without cracking.
Thermoplastic Coating
The first benefit of adding a thermoplastic coating to U-bolts is the added buffer between metals. Metal-on-metal contact can lead to galvanic corrosion and broken structures. A thermoplastic coating adds a protective neutral layer between the pipe and the restraint.
The coating also has a low coefficient of friction, which means it lets piping glide through the U-bolt, while cradling the pipe at the same time. This reduces the risk of broken pipes, restraints, or support structures.
Applications
Product Parameters
| Product name | Countersunk self-tapping screws |
| Surface | Zinc Plated,Oxide black,black phosphating ,grey phosphating |
| Drive type | Phillips |
| Head | Bugle head |
| Thread | corse,fine thread |
| size | 3.5 3.9 4.2 4.8 6# 7# 8# 10# |
| Length | 152mm, 6″ |
| package | customer’s requirement |
Packaging and Shipment
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Persisting in "High quality, Prompt Delivery, Competitive Price", we have established long-term cooperation with clients from both overseas and domestically and get new and old clients' high comments for Good Quality Screws And Bolts - Phillip Drive Countersunk Self-tapping Screws – Qijing, The product will supply to all over the world, such as: Kuwait, Albania, Vietnam, We are your reliable partner in international markets with the best quality products. Our advantages are innovation, flexibility and reliability which have been built during the last twenty years. We focus on providing service for our clients as a key element in strengthening our long-term relationships. Our continual availability of high grade products in combination with our excellent pre-sales and after-sales service ensures strong competitiveness in an increasingly globalized market.
By Naomi from Lahore - 2018.06.18 19:26
It's really lucky to find such a professional and responsible manufacturer, the product quality is good and delivery is timely, very nice.
By Karl from Iraq - 2017.08.28 16:02
