Screws
Self Drilling Screw (SDS)
Hex washer head and CSK self drilling screws (DIN 7504) with EPDM washers for roofing sheets and steel, sizes 8 to 14 gauge.
| Material | Case-hardened carbon steel, SS 410 |
|---|---|
| Sizes available | No. 8 to No. 14, Lengths 13 mm to 100 mm |
| Finish | Zinc plated, Ruspert / coated |
| Standards | DIN 7504 |
| Head types | Hex washer head with EPDM washer, CSK |
| Price | Price on request – depends on size and quantity |
| Availability | In stock for Trichy & Thanjavur. Delivered across Tamil Nadu and all over India. |
Need a price or bulk quantity?
Send us the size and quantity on WhatsApp. Pick up in Trichy & Thanjavur, or we deliver across Tamil Nadu and all over India. We usually reply within working hours (Mon – Sat, 9:00 AM – 8:00 PM).
About Self Drilling Screw (SDS)
Self drilling screws (SDS) have a drill point on the tip, so they drill, tap and fasten in one step with a screw gun. No pre-drilling needed.
Types we stock
- Hex washer head with EPDM washer: for roofing and cladding sheets onto steel purlins; the washer seals out rain
- CSK head: for flush fixing of sheet metal, aluminium and panels
The go-to screw for sheds, godowns and pre-engineered buildings across the delta.
Common applications
- Roofing and cladding sheets onto steel purlins
- Sheet metal and light steel framing
- Sheds, godowns and PEB buildings
Frequently asked questions
›Do I need to drill a hole first?
No. The drill point on the tip drills the hole and the thread taps it in one step. Use a screw gun, not a hammer drill.
›Why is there a rubber washer?
The EPDM washer seals the hole in roofing sheets so rain cannot get in.
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