- Overview
- Product Description
- Company Profile
- Our Advantages
- Testing Machines
- Packaging & Shipping
- FAQ
Basic Info.
Product Description
| Name | Stainless steel SS304 316 Drilling Hex Head Self Tapping Self-Drilling Roofing Screw With Washer |
| Place of Origin | Wenzhou, Zhejiang, China |
| Size | ST2.2-ST6.3 Various length specifications, support customization |
| Finish | Passivation |
| Head Type | Hex flange |
| Material | Carbon Steel S22C Stainless steel 304,316 |
| Grade | 10.9 A2-70,A4-70 |
| Standards | GB /T 15856.4,etc |
| Non-standards | OEM is available, according to drawing or physical samples |
| Samples | Samples are free and shipping cost by your side |
| Package | Bulk in master cartons, then on pallets, or according to customers' requirement. |
| Payment | T/T, L/C |
WJ is a manufacturing-and trading-integrated company located in Wenzhou, China. We are specialized in developing and manufacturing all kinds of fasteners. Our main products include bolts, studs, screws, nuts, shafts, pins, washers, retaining rings, and other categories.
WJ also customizes all kinds of non-standard products. We focus on technology development and product optimization and have advanced production research and development testing equipment.
You are welcome to send us an inquiry to get more information.
√ Over 15 years fastener OEM service experience
√ Quick response to inquiries and questions
√ Strict QC process and Testing process
√ Free sample available
√ Package customizable
What is your delivery time?
It depends. If we have bulk goods in stock, we can ship goods within 3 days after the QC process. If we don't have stock, normally it takes 7-15 days for OEM samples and 20-30 days for bulk goods. If it refers to opening the new mold, it takes an extra 7-15 days to make the mold.
What are your payment terms?
Normally, we make a 30% deposit after PI confirmation and a 70% balance before shipment.
How do you guarantee good quality?
A pre-bulk sample check can solve this problem to the largest extent. We will arrange production according to the pre-bulk sample quality standard after your confirmation of the samples.