SELF DRILLING SCREWS HEX HEAD 1 1/2"(200pcs per pkt)
Self Drilling Screws CSK Head 1½" – Countersunk Tek Screws, 400 pcs per Packet
Fix metal to metal, timber to steel and boards to steel studs in a single step – no pre-drilling needed. These zinc-plated countersunk self drilling screws sit flush with the surface for a neat, professional finish. Available at Shabbiri Hardware, Magadi Road – Ongata Rongai and Tuala, Nairobi.
Technical Specifications
| Product Name | Self Drilling Screw, Countersunk (CSK) Head |
|---|---|
| Length | 1½ inch (approx. 38 mm) |
| Gauge / Diameter | 8g (approx. 4.2 mm) – standard size for this length |
| Head Type | Countersunk (flat), sits flush with the surface |
| Drive Type | Phillips cross recess – use a PH2 bit |
| Point Type | Self drilling (Tek / drill-point) tip |
| Thread | Fine pitch, full thread for strong grip in steel |
| Material | Case-hardened carbon steel |
| Finish | Zinc plated (silver) for corrosion resistance |
| Drilling Capacity | Thin to medium gauge steel, typically up to about 3 mm |
| Suitable Materials | Steel sheet, steel studs and channels, aluminium, timber, MDF, plywood, gypsum and cement boards onto steel |
| Packaging | 400 pieces per packet |
| Recommended Tool | Cordless drill / screw gun, 1,500–2,500 rpm |
| Availability | In stock at Rongai and Tuala branches |
Product Description
The Self Drilling Screw CSK Head 1½" combines a drill bit, a tapping thread and a countersunk head in one fastener. The hardened drill-point tip cuts its own hole as you drive, the fine thread then forms a tight grip, and the countersunk head pulls down flush with the surface. One operation replaces drilling, tapping and fixing – saving time on every job site.
The countersunk design makes these screws the first choice wherever a flat finish matters: gypsum board and cement board onto steel studs, timber or plywood onto steel frames, aluminium trims, door and window frames, shelving, cabinetry on metal carcasses and light steel fabrication. The zinc-plated finish protects against rust in normal indoor and sheltered conditions.
Supplied in a value packet of 400 pieces, this is the economical choice for contractors, fundis, fabricators, drywall installers and DIY users across Nairobi and Kenya.
Key Features & Benefits
No Pre-Drilling
Drill-point tip cuts its own hole in steel – one step, faster installs.
Flush Finish
Countersunk head sits level with boards and trims for a clean, paint-ready surface.
Strong Hold
Hardened carbon steel with fine thread grips firmly in metal and timber.
Rust Resistant
Zinc plating protects against corrosion for long-lasting fixings.
Applications
- Fixing gypsum board, cement board and fibre board onto steel studs and channels
- Timber, plywood and MDF onto steel frames and purlins
- Aluminium sections, trims and profiles
- Steel door frames, window frames and light gates
- Metal shelving, racking and steel cabinet assembly
- WPC and PVC panel battens fixed onto metal frames
- General light steel fabrication and maintenance work
How to Use Self Drilling Screws
- Prepare the tool: Fit a PH2 Phillips bit in a cordless drill or screw gun. Set the clutch to a medium torque setting.
- Mark the position: Mark fixing points on the board or sheet. Keep a minimum edge distance of about 10 mm.
- Position the screw: Place the drill point on the mark and hold the drill straight, at right angles to the surface.
- Drill at steady speed: Apply firm, even pressure and run at medium speed. Let the tip cut through the steel – do not force it.
- Drive home: Once the thread engages, keep driving until the countersunk head sits flush with the surface.
- Stop – don't over-tighten: Release the trigger as soon as the head is flush to avoid stripping the thread or crushing the board.
Why Buy from Shabbiri Hardware?
Trusted Since 1990
Over three decades supplying builders, fundis and homeowners in Nairobi.
Two Branches
Convenient pick-up on Magadi Road at Ongata Rongai and Tuala.
Countrywide Delivery
Same-day within Nairobi and next-day delivery across Kenya on request.
Bulk & Wholesale
Contractor and wholesale quantities available – ask for a quotation.
Frequently Asked Questions
What is a CSK self drilling screw?
It is a screw with a countersunk (flat) head and a drill-point tip. It drills its own hole in metal and sits flush with the surface, so no pre-drilling is required.
How many screws are in one packet?
Each packet contains 400 pieces.
Can I use these screws for gypsum board on steel studs?
Yes. The countersunk head sits flush with the board, giving a smooth surface ready for jointing and painting.
Can these screws go through thick steel?
They are designed for thin to medium gauge steel. For thicker steel sections, drill a pilot hole first.
Are they suitable for outdoor use?
The zinc plating handles indoor and sheltered areas well. For fully exposed or coastal sites, seal the screw heads or use stainless steel screws.
Where can I buy self drilling screws in Nairobi?
At Shabbiri Hardware – Magadi Road, Ongata Rongai (opposite Hashi Petrol Station) and Tuala (past Nazarene University). We also deliver countrywide.
Visit Our Branches
Ongata Rongai Branch
Magadi Road, opposite Hashi Petrol Station, Ongata Rongai
Tuala Branch
Magadi Road, Tuala – past Nazarene University
Order Self Drilling Screws Today
Specifications
| Model | HEX HEAD 1½" |
| Category | Screws |
| Availability | In stock |
| Sourced by | Shabbiri Hardware Kenya Limited |
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