Roofing screw manufacturers hex head self drilling tek screws with epdm sealing washer double threaded self drilling screw
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- Supplier: Shenzhen Juhao Hardware Technology Co. Ltd.
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Product Overview
Description
Company Profile
Shenzhen Juhao Hardware Technology Co.Ltd, established in 2018 and located in Shenzhen, China. Juhao Hardware Technology Co.Ltd is a professional manufacturer of standard and non-standard fasteners more than a decade. Our products have covered many fields, such as furniture, communication equipment, outdoor grill, alternative energy equipment, lighting, sanitary wares, garden tools(mowers), cars. We have a professional research and development team to meet the diversified and personalized requirements of our customers. Our goal is to provide customers with thoughtful service, strict quality control, competitive price and aim to commit one-stop service.
ABOUT US
Reasons for choosing us
1.Our company mainly produces and sells GB, DIN, ISO, ANSI series fasteners, and provides various carbon steel, stainless steel,and brass materials and products at lower prices. We have over 15 years of experience in fastener manufacturing.
2.Our company has SGS, ISO9001 and ATF16949 certificates, and our products comply with ROSH standards. All products are inspected by inspectors during the production process and packaging, and the quality of all products is guaranteed.
3.After receiving the customer's order, if it is a standard product, we will ship it within 3 to 7 days. If the customer orders a customized product, we can ship it within 7-15 days after receiving the customer's drawings or samples.
4.We provide OEM ODM customized services based on drawings and samples, and also accept customization according to customer needs.
3.After receiving the customer's order, if it is a standard product, we will ship it within 3 to 7 days. If the customer orders a customized product, we can ship it within 7-15 days after receiving the customer's drawings or samples.
4.We provide OEM ODM customized services based on drawings and samples, and also accept customization according to customer needs.
Product Paramenters
What is a self drilling screw?
A self drilling screw is a type of screw that has similar design features with a drill bit with a tip that enables it to drill its own hole. As the name implies, self-drilling screws do not require a pilot hole in order to perform as a fastener. They are designed to work on soft steel, wood, and metals.A self drilling screw or bolt has a drill bit at its end point. The middle is threaded to grip the material it is drilled into. They usually have a hexagonal screw head. Self drilling screws are also known as tek or self-tapping screws.It should also be noted that self-drilling screws are available in both fine thread and coarse thread types.
Benefits Of Self Drilling Screws
Self-drilling screws do not need any kind of pre-drilling or pre-fixing. Self-drilling provides efficient performance by reducing preparation time and constantly ensures a precise and durable bond. Self-drilling screws have been designed to penetrate or cut directly into the material. This allows the users to cut out the pre-drilling step in the process and create an unbeatable tight thread.Your time, resources and stress will be simplified using the self-drilling screws.
Selection of Screw Materials and Surface Treatment
Self-drilling screws are normally crafted from hardened steel or stainless steel. The material preference depends on the precise application and environmental factors. Hardened steel self-drilling screws provide excessive power and durability, making them suitable for heavy-obligation obligations. Stainless metal screws, then again, offer wonderful corrosion resistance, making them ideal for out of doors or marine applications. These screws frequently function a special coating, including zinc or galvanized finish, to beautify their resistance to rust and other forms of corrosion.
Adopting efficient baking paint for concealed coating, to meet the requirements of different customers for screw color and spray quantity to the maximum extent.
Precautions for selecting self-drilling screws
1. The nominal length L should be selected based on the thickness of the connecting plate, the gap between the two plates, or the thickness of the interlayer.
2. Self tapping screws with a nominal length L ≤ 38 mm shall be made into full threads. The thread length of L>38 mm self tapping screws shall be agreed upon by both the supply and demand parties.
3.The length specifications for L>50 mm shall be agreed upon by both the supply and demand parties, but their length
specifications shall comply with L=55, 60, 65, 70, 75, 80, 85, 90, 95, and 100 mm.
specifications shall comply with L=55, 60, 65, 70, 75, 80, 85, 90, 95, and 100 mm.
Product Description
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COMPANY PROFILE
Shenzhen Juhao Hardware Technology Co.Ltd, established in 2018 and located in Shenzhen, China. SHENZHEN Juhao Hardware Technology Co.Ltd is a professional manufacturer of standard and non-standard fasteners more than a decade. Our company mainly produces and sells fasteners of GB,DIN,ISO and JIS series,and provides all kinds of stainless steel materials wih lower price.We have more than 15 years experience in fastener manufacture.
Question 1 | 1.Why is stainless steel magnetic? |
304 stainless steel belongs to austenitic stainless steel, austenite in the cold working process in part or a small amount of transformation into martensite, martensite is magnetic, so 304 stainless steel is non-magnetic or slightly magnetic. | |
Question 2 | 2. How to identify authentic 304 stainless steel products? |
①Support 304 stainless steel special test potion detection, if not discoloured for the authentic 304 stainless steel | |
② support chemical composition analysis, spectral analysis | |
③ support salt spray test, simulate the actual use of the environment | |
Question 3 | 3. What are the most commonly used stainless steel? |
① 201 stainless steel, suitable for use in dry environments, easy to rust in water | |
② 304 stainless steel, outdoor or wet environment, corrosion resistance and acid resistance | |
③ 316 stainless steel, plus molybdenum, more corrosion resistance and pore erosion resistance, especially for seawater and chemical media |
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