Taiwan Special Stainless Steel Roofing High Hardness TEK Self Drilling Screws

  • 500-9999 Pieces
  • >=10000 Pieces
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Shipping fee:
Depends on the order quantity.
Lead Time:
60 day(s) after payment received
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Quick Details
Place of Origin:
Taiwan, China
Brand Name:
Cheng Hao
Model Number:
Special Stainless Steel
Diameter Range:
M1.2~M25, #0~4"
Length Range:
Salt Spray test:
Kesternich test:
over 100 cycles
directly drill through 5mm S/S plate
directly drill through 13mm steel plate
High quality:
Replaces Bi-metal
No Rust:
over 200 years outdoors

Packaging & Delivery

Selling Units:
Single item
Single package size: 
20X17X15 cm
Single gross weight:
20.0 kg
Package Type:
bulk/carton/pallet, plastic bags/canton/pallet, small boxs/carton/pallet,or customer request
Picture Example:
Lead Time :
Quantity(Piece) 1 - 200000 200001 - 1000000 >1000000
Est. Time(days) 60 75 To be negotiated
Video Description

Taiwan Special Stainless Steel Roofing High Hardness TEK Self Drilling Screws

Replaces Bi-Metal

Replaces Bi-metal

Replaces Bi-metal (Cheng Hao Screw):


size #12 screw with Tek #5 drills through a 13 mm thick steel sheet

size #12 screw with Tek #5 drills through a 5 mm thick stainless steel sheet


Our screws can:

Resist corrosion 15 times better than any material drilling screw on the market

Drill through deeper and at a faster speed than Bi-Metal screws

Cost less and work more efficiently than Bi-Metal



High Anti-Corrosion (Salt Spray Test 6,000~15,000 Hours)

High Hardness (615-640 HV)

High Strength

Pass 100K Kesternich test cycles



Self-drilling Screws

Roofing Screws

Tapping Screws

Solar Panel Screws

Marine/Salt-water Application Screws




Packaging & Shipping

bulk/carton/pallet, plastic bags/canton/pallet, small boxs/carton/pallet,or customer request



Product Effects



Our Services

Why Choose Us 

Our principle of Business Operation and Management

For business operations and management, we take our clients as our top priority and our principle is to provide the products and services of premium quality with sincerity in a practical and speedy way. We take pride in addressing customers’ concerns and fulfilling clients’ needs for products. In addition to supplying products to the domestic relevant special industry, we have also been actively cultivating the global market and have earned deep trust and strong support from our clients.

Management Strategy

We focus on and specialize in developing, designing and manufacturing of premium fittings in C-parts. With our professional analysis and planning, you can easily resolve the tough issues for fasteners procurement and maximize your profit. Please contact us for any support to fulfill your business needs. We will definitely do our best to serve you in a speedy way.


Trade Shows





Company Information

Introduction of our company

Our company is composed of a group of professional experts of metal fasteners who have accumulated many years of experience in marketing and manufacturing. We specialize in developing, manufacturing and sales of the fittings in C-parts. As Taiwanis marching towards the accurate market, the traditional suppliers model of direct mass supply is unable to catch up with the trend for modern industry to attain pluralism and simplicity. We believe that after you review the professional assessment and proposal provided by our company, you will choose us to be your business partner for One Stop Shopping. We will help you to streamline your procurement process, to effectively improve your ability for competition, to well position your company in the global business.Products Application:3C electric/PCB/ Auto/Motorcycle/Bike parts/Houshold Appliances/Machine Industry/Medical Appliance/Aerospace Industry/News Report Appliance/Video & Sound Equipment/Precision Instrument /Toy Products,etc  Material can be carbon steel,Special stainless steel,brass,aluminum,titanium, 






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