Description
A self drilling screw (Tek screw) is a screw with a drill point that drills its own hole and fastens in one step, without pre-drilling. ZARA Self Drilling Screws, Hex Head (Tek Screws) come in #14 from 3/4″ to 6″, 90 to 450 pcs per box, from AED 20.40 per box ex VAT, from Al Zafeer Building Materials in Al Quoz, Dubai. Arabic: براغي ذاتية الحفر. See all self drilling screws.
Self-Drilling Hex Head Screws (Tek Screws) with EPDM Washer
ZARA Tools self-drilling screws drill, tap and fasten in one step. The hex washer head takes a socket or nut setter for high torque, and the bonded EPDM washer seals the hole against rain, so roofs and cladding stay watertight.
Specifications
| Catalogue code | ZR-F04 |
|---|---|
| Also known as | Tek screw / self-tapping roofing screw |
| Head | Hex washer head |
| Point | Self-drilling drill point, no pilot hole needed |
| Washer | Grey bonded EPDM sealing washer |
| Finish | Zinc-plated, rust-resistant |
| Main use | Fixing metal roofing and cladding sheets to steel purlins |
| Sizes | All sizes available – ask us for the size list |
Where to use them
- Metal roofing sheets on steel purlins
- Cladding sheets on steel frames
- Sheet metal fixing and steel structures
Frequently asked questions
Do I need to pre-drill?
No. The drill point cuts its own hole in steel purlins, then the thread taps and fastens in the same step.
Will the roof leak at the screw?
The bonded EPDM washer seals the hole against water when the screw is tightened correctly – snug, not over-compressed.
What sizes do you stock?
All sizes are available. Send ZARA Tools your sheet and purlin thickness on WhatsApp and we will recommend the right size.
Why buy from ZARA Tools?
ZARA Tools is the brand of Al Zafeer Building Materials LLC, a building materials and hardware supplier in Dubai since 2006, with a branch in Al Quoz and a sister company in Malaysia. We supply dealers, contractors and fabricators with screws, fixings, hand tools and hardware.
