Min. Order : 2000 Pieces

Customized Stainless Steel Solar Mounting Screw Double Thread Solar Roof Hanger Bolt M10 M12

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Quick Details

Port: Shanghai
Payment Terms: L/C,T/T
Supply Ability: 500 Ton/Tons per Month
Brand Name: Holystones
Place of Origin: Jiangsu China
Length: Customized
Product name: Solar Panel Double Thread Hanger Bolt
Sample: Free
Size: M10 or Customized
Standard: Other
Material: Stainless Steel,Steel
Head type: Wood and Machine Head
Grade: A2-70
Model Number: Customized
Finish: Plain
Packaging Detail: Bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand
Qingdao Holystones Metal Product Co., Ltd.
Gold Supplier
Trading Company
Response Rate
On-time delivery rate
US$ 10,000+
R&D staffs
Visit Store
Products Description
Customized Stainless Steel Solar Panel Mounting Machine Wood Double Thread Hanger Bolt Screw M10
2.Steel:C45(K1045), C46(K1046),C20
3.Carbon Steel: 1010,1035,1045
4.Aluminum or Aluminum Alloy:Al6061,Al6063,Al7075,etc
SAE J429 Gr.2, 5,8; ASTM A307Gr.A,A193 B7,B8,B8M,A194 2H, Class 4.8-12.9 and etc.
Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G and etc.
ISO, DIN, ANSI, JIS, BS and Non-standard
Sample Service
Free sample but freight cost is paid by customers(when sample is in stock)
sample fee(when samples need to be customized)
1. Competitive price; 2. OEM service available
Bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand
Payment terms
FOB, CIF, CFR, L/C, or others.
Delivery method
By sea, by air or by express service
Lead Time
7-15 work days after order confirmed
Structural Steel; Metal Buliding; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine etc.
Special specifications and marks can be made according to customers requirements;
Details Images
    Product Paramenters

Refference to the International Standard: DIN, GB, ASME/IFI/ANSI, EN, ISO, JIS, UNI, BS, etc. 
Or according to customer`s requirement.

Main Products
International Standard Bolts Customized is Available
International Standard Nuts  Customized is Available
International Standard Screws Customized is Available
International Standard Rivets Customized is Available
International Standard Product   Customized is Available
International Standard Pins&Keys  Customized is Available
Packing and Shipping
Bulk in carton
Plastic bag
Small box

By sea, By air or By express service
Company Profile
Holystones (HS) Metal Product Company is a supplier of industrial fasteners. Over 10 years of manufacturing stainless steel fasteners, industry experience and construction of state-of-the-art facility. We can offer the most common stainless steel fasteners or specially designed fasteners to exceed our customer's expectations, as our vendors are the best name brands in the industry.

We have more than 300 employees and consists of one lab and software center, 3 wholly owned subsidiary of Factory and 5 warehouse stocking locations. Our extensive product line and our fast and friendly sales representatives are able to satisfy our customer demands. 

As a veritable “one-stop shop”, Holystones offers same day delivery of in-stock items and a wide variety of supply chain solutions tailored to the needs of our customers. Our custom inventory control programs provide extensive cost savings to our customers.

2009 - Holystones started with OEM service, merged Wuxi standard Hardware Factory. 
2013 - Start to introduce lean-production methods to combine the flexibility and quality of craftsmanship with low costs of mass of production. 
2016 - Gradually build up the warehouse in-stock locations of the strategy.
2017 - Holystones Company Jointed with Tengri Fastner Group started the sales worldwild. 
2018 - Aestimate APAC office in HK and Dubai. 
2019 - Started the Overseas sales expansion, build up Latin America and Europe sales office.
Customer Photos
Why Choose Us

Advanced produce and inspecting equipments

Stable production and operations team.

Customized design Center

Fast sample response speed
Good after-sale service, all questions will be replied within 12 hours.

Q:Can I place a small order?
A: Of course you can.
Q:What is the process and cost of product customization?
A:According to our company policy, the customer provides drawings or samples, our technical department will confirm the product plan. Customers are required to pay for sample and courier fees, which would be deducted from subsequent bulk orders.
Q: Can I get some free samples from your company?
A:The company policy states that sample is free but freight cost is paid by customers when sample is in stock, there is sample fee when samples need to be customized.
Q: I'd like to know your price term and payment term?
A:FOB , CIF and others ways according the your needs. We can do T/T or LC, usually for the standard product, we prefer T/T 30% deposit and 70% balance before shipment, for customized product, the payment need to negotiate accroding to the product.
Q:What is the quality of your products guarantee?
A:We have passed ISO9001:2008 Quality Management System Certification, CQM Quality Management System Certification and IQNet Quality Management System Certification, if the quality doesn't meet the contract requirement, we can change the goods for free.
Q:Do you have after-sales service?
A:Certainly, you can contact us at any time.