Pv bi-metal hex head self tapping screw with washer

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1️⃣ Line up the screws with the holes on whatever you're attaching.

2️⃣ Use a drill to tighten the screws 'til the washer (the EPDM one) squishes down evenly.

3️⃣ Make sure the washer makes a good seal that keeps water out. Don't tighten too much, or you'll wreck the washer.

☆ Different sizes are available for different hole and purlin thickness.

☆ Lasts a long time –Galvanized steel or Stainless steel. It will last 10 years and service will continue for 25 years.

☆ Check out the right way to 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.