Factory wholesale Flat Head Screw - Phillip Drive Countersunk Self-tapping Screws – Qijing
Factory wholesale Flat Head Screw - 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
Our Market
Our Customers
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Our target should be to consolidate and improve the high-quality and repair of current goods, in the meantime regularly produce new solutions to meet unique customers' needs for Factory wholesale Flat Head Screw - Phillip Drive Countersunk Self-tapping Screws – Qijing, The product will supply to all over the world, such as: Mumbai, Romania, Victoria, Our aim is to help customers to make more profits and realize their goals. Through a lot of hard work, we establish a long-term business relationship with so many customers all around the world, and achieve win-win success. We will continue to do our best effort to service and satisfy you! Sincerely welcome you to join us!
By Alex from Morocco - 2018.11.02 11:11
Production management mechanism is completed, quality is guaranteed, high credibility and service let the cooperation is easy, perfect!
By Nelly from Slovakia - 2017.01.28 19:59
