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Self-Drilling Hex Screw 5.5 x 25 mm with Rubber Gasket, 200 Pack
Original price was: KSh 1,500.00.KSh 1,300.00Current price is: KSh 1,300.00. ex VAT
Self-Drilling Hex Screw 5.5 x 25 mm with Rubber Gasket, 200 Pack
| Thread diameter | 5.5 mm |
| Length under head | 25 mm (1 in) |
| Head type | Hex washer head |
| Drive size | 8 mm hex |
| Drill point | #3 self-drilling |
| Material | Carbon steel |
| Plating | Zinc |
| Gasket material | EPDM rubber |
| Pack quantity | 200 pieces |
| Application | Roofing, cladding, ducting |
Same day Delivery
Delivery
We deliver to the address you provide. Nairobi is often same-day on business days.
Across the country
Delivery outside CBD starts from KES 300
Warranty 1 year
72-hour (3-day) returns
Description
Hex Washer Head Fastener for Sheet Metal
The self-drilling hex screw drills its own pilot hole through light-gauge steel, aluminium and timber without a separate bit change. A bonded EPDM rubber gasket sits under the hex washer head and compresses against the panel face. The 200-piece pack covers roof sheet, cladding and ducting runs on a single order.
The fastener measures 5.5 mm across the thread and 25 mm from under-head to point. A #3 drill point cuts through steel up to 1.5 mm thick in one pass. The 8 mm hex head accepts a standard nut driver or magnetic socket. Zinc plating resists red rust during outdoor service.
Installers use the fastener on metal roofing, wall cladding, HVAC duct flanges, signage frames and container panels. The EPDM washer seals the hole against rain and wash-down spray. A coarse thread grips thin sheet without stripping, and the hex head spreads clamp load across the panel.
Key Features
Self-Drilling #3 Point
The drill point cuts its own hole through light-gauge steel and aluminium without a pilot bit.Bonded EPDM Gasket
A moulded rubber washer compresses under the head to seal the penetration against water.Hex Washer Head
- 8 mm hex drive fits standard nut drivers and sockets.
- Integrated washer spreads clamp load on thin panels.
- External hex allows high torque without cam-out.
Zinc-Plated Steel
The coating limits red rust on outdoor roofing and cladding installations.200-Piece Pack
The bulk quantity covers small roofing runs and service van stock.Coarse Thread Form
The thread pitch grips thin sheet and timber without stripping under load.
Specifications
| Feature | Specification |
|---|---|
| Product type | Self-drilling hex washer head screw |
| Thread diameter | 5.5 mm |
| Length under head | 25 mm (1 in) |
| Head type | Hex washer head |
| Drive size | 8 mm hex |
| Drill point | #3 self-drilling |
| Maximum steel thickness | 1.5 mm per pass |
| Thread form | Coarse |
| Material | Carbon steel |
| Plating | Zinc |
| Gasket material | EPDM rubber |
| Gasket position | Bonded under head |
| Pack quantity | 200 pieces |
| Application | Roofing, cladding, ducting, signage |
| Corrosion resistance | Zinc coating for outdoor service |
| Storage | Dry conditions, original carton |
What’s in the Box
200 x 5.5 x 25 mm fasteners with bonded EPDM gaskets
Why Choose This Sealing Fastener
The drill point removes a pilot-hole step from metal roofing and cladding work.
The bonded gasket seals each penetration without a separate washer to handle.
Zinc plating suits sheltered outdoor runs on roofs, canopies and ductwork.
The 8 mm hex head accepts common nut drivers on cordless impact tools.
A 200-piece carton supports small contracts and maintenance stock.
Esther Nekesa (verified owner) –
Poa
Joseph Kimani (verified owner) –
Safi
George Mwangi (verified owner) –
Screwed into the mabati sheet clean.
Jane Wambui (verified owner) –
200 pieces counted correct, quality looks okay.
Mary Achieng (verified owner) –
Drilled through the purlin without pre-drilling.
Patrick Ochieng (verified owner) –
Gasket sealed properly, no leaks on the roof so far.
Samuel Njoroge (verified owner) –
Hex head gripped the driver well, no strip.