Hex Flange Self Drilling Screw with transparent pad for Solar

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1️⃣ Put the screws where they need to go on the rail or bracket.

2️⃣ Use a drill to tighten the screws until the clear washer squishes down evenly.

3️⃣ Make sure the washer seals all the way around the flange to keep water out. Don't screw it too tight, or you might break the washer.

☆ We can give you all sorts of sizes for different hole and metal thicknesses.

☆ Very Tough – Made of galvanized or stainless steel, so they should last for at least 10 years, maybe 25.

Pls see the right way tp drill screws into the metal roof and purlin.

Q1. What’s the specification of screw?

Please contact us for accurate answers.

Q2. Does the screw can be made in black color? And what’s the surface treatment?

Yes, Black electrophoresis.

Q3. Can you supply bi-metal screw?

Yes, please contact us for specific materials.

Q4: Can it be customized according to customers' drawings? 

Yes, the bolts can be customized according customers needs, pls share the drawings for us. 

Q5: What's your trade terms?

By express, we can offer TNT, DHL, Fedex etc. 

By sea, we can provide EXW, FOB, CIF or DAP etc.

Q6: What's your payment method? 

Order<=10000USD, it requires 100% T/T payment when place order.

Order>10000USD, it requires 50% T/T advance and 50% balance before shippment.

Q7: How long is your delivery time?

For the bolts, generally it will take about 5-10 working days if the goods are in stock. If none in stock, it depends on order quantity.