These round head self-tapping screws feature sharp, self-tapping threads that cut their own mating threads as they are driven, making them ideal for sheet metal, automotive, electronics, and light construction. Unlike traditional screws, they eliminate the need for nuts or tapped holes, reducing assembly time.
Materials range from stainless steel (A2/A4) for corrosion resistance to carbon steel with zinc plating for cost-effective durability. Sizes vary from M2 to M8 in metric or #4 to #14 in imperial, with lengths spanning 6mm to 50mm.
Key advantages include:
Quick installation in thin materials (e.g., HVAC ducts, electrical enclosures).
Secure hold due to wide threads and head design.
Compatibility with Phillips-head tools, widely available globally.
Common applications include roofing, machinery, appliances, and DIY repairs. For heavy-duty use, self-drilling variants (with drill-like tips) are available to penetrate thicker metals.
Product Description
Material
Carbon Steel
Stainless Steel
Zinc-Plated/Galvanized
Aluminum Alloy
size
Ball Size Compatibility: 1-7/8", 2", and 2-5/16" (adjustable couplers available).
Tongue Width: Standard 2" x 2" or 3" x 3" for A-frame trailers.
structure
The screw consists of:
Round (pan) head: Provides a flat bearing surface with a rounded top, preventing over-insertion.
Phillips drive (cross recess): Ensures torque transfer and reduces cam-out.
Sharp threads: Self-tapping design cuts into materials; may include twin threads for faster driving.
Application Areas
Widely used in:
Sheet metal fabrication: HVAC, electrical boxes, and automotive panels.
Electronics: Securing circuit boards or chassis with M2-M3 screws.
Construction: Attaching roofing, siding, or lightweight framing.
Basic Features
| Product Name | Round Head Self-Tapping Screws |
Brand |
Hanyang |
| Product Model | Customized according to your drawing |
Quality |
High Quality |
| Product Material | Stainless steel, Carbon steel |
Supply Capacity |
100000 pieces per month |
|
Packaging |
1. Bulk cartons+ wooden pallets 2. According to customer needs |
Payment Terms |
TT or other payment methods |
|
STANDARD |
ASTM A325 A325m |
Certificate |
ISO9001 |
|
Warranty |
6months |
Thread |
UNC, UNF, M, F |
| CLASS |
Carbon steel:4.8,6.8,8.8,10.9,12.9 Others : Customized |
Specification |
Customized , OEM/ODM, as per client' s drawing or sample |
Our Products
Bolt
Nut
Customised fasteners
Our Services
mechanical equipment
Efficient and precise processing and testing equipment.
Technology Application
An experienced manufacturing company with professional design, R&D and manufacturing teams.
Standardized production
Complete production and processing on time and quickly
Provide customized services
Provide drawings and samples according to customer requirements
Order Management
Smoothly and actively complete customer orders
responsibility
Full supervision and management from product manufacturing to delivery to customers
Our Certificates
Our production and dispatch
20
years
We have been working in the industry since 2015.
34
nations
We have worked with 34 countries on five continents.
27
harbours
We have multiple ports to ship to.
Our address
Gaotanba E-Commerce Industrial Park, Shuifu City, Zhaotong, Yunnan, China
Phone Number
86-15983127791
15983127791@163.com
FAQ
1.Are we a manufacturer or a trading company?
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We are a manufacturer. We have professional pre-sales and after-sales service staff to serve you.
2.What are the shipping methods?
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We can choose DHL, Fedex, UPS, as well as sea or air transportation.
3.What are the payment terms?
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Our payment terms are usually 30% T.T deposit in advance and 70% balance before shipment.
4.Do you provide samples? Are the samples free?
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We generally provide samples for free, but the freight should be paid by the customer.
5.How do you ensure quality control?
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We are responsible for quality control not only of the production line, but also of the entire ready-made order. Each order needs to be inspected in detail before shipment.
