Product Description

Fast, Reliable Fastening in One Step

A 1/2″ self drilling screw is a compact, efficient fastener designed to drill, tap, and fasten in a single operation. The drill point at the tip eliminates the need for pre-drilled pilot holes, saving time and reducing tool requirements on the job site . At 1/2 inch in length, this screw is ideal for joining thin gauge metals, attaching panels, and securing light components where a longer screw would protrude or bottom out.

Whether you are installing metal siding, assembling ductwork, or completing general repairs around the home, the 1/2″ self drilling screw provides a secure, vibration-resistant connection with minimal effort. Available in multiple head styles, drive types, and materials, it is a versatile addition to any fastener collection.

Key Features and Benefits

No Pre-Drilling Required

The self-drilling point acts as a built-in drill bit, penetrating the material and forming a mating thread simultaneously . This eliminates the pilot-hole step entirely, streamlining installation and reducing the risk of misalignment, especially when working with metal sheets or thin components.

Compact 1/2-Inch Length

The 1/2″ length is specifically suited for thin materials and shallow assemblies. It is commonly used for attaching sheet metal to steel substrates, securing panels, and fastening components where a longer screw would be unnecessary or damaging . This size is a staple in roofing, siding, and light metal fabrication.

Multiple Head and Drive Options

These screws are available in a range of configurations to suit different applications:

• Hex Washer Head: Provides a large bearing surface and is driven with an external hex (typically 1/4″ or 5/16″), offering high torque transfer for secure seating .

• Pan Head: A slightly rounded head with a flat underside, driven with a Phillips bit, ideal for general fastening where a low-profile finish is acceptable .

• Flat Head: Countersinks flush with the material for a smooth surface, often used in applications where snagging or protrusion is a concern .

Material and Finish Options

• Zinc-Plated Steel: The standard choice for indoor and general-purpose applications, offering moderate corrosion resistance at an economical price .

• Stainless Steel (410 grade): Provides superior corrosion resistance for outdoor, high-moisture, or chemically exposed environments .

Technical Specifications

Applications

The 1/2″ self drilling screw is suitable for:

• Metal-to-Metal Fastening: Attaching sheet metal panels, ductwork, and steel framing

• Roofing and Siding: Securing metal roofing sheets and siding panels (hex washer head recommended)

• Wood and Composite to Steel: Fastening wood or composite materials to steel bases

• General Construction: Installing brackets, cladding, and light structural components

• DIY and Repair: Household repairs, furniture assembly, and hobby projects

Installation Guide

Tools Required:

• Power drill or impact driver

• Appropriate driver bit (Phillips #2 or hex socket)

• Safety glasses

Step 1: Position the Screw
Place the drill point at the desired fastening point. Apply firm pressure to prevent the point from walking across the surface, especially on smooth metal.

Step 2: Drive the Screw
Start the drill at a low speed to allow the point to bite. Once the hole is started, increase speed and drive the screw until the head is snug against the material.

Step 3: Avoid Over-Tightening
Stop driving when the screw head is flush or the washer is compressed. Over-tightening can strip the threads in thin metal or damage the material.

Maintenance and Care

• Storage: Store in a dry place to prevent rust, particularly for zinc-plated screws.

• Inspection: For outdoor installations, periodically check for signs of corrosion and replace if necessary.

• Correct Bit: Use the correct driver bit size to avoid stripping the screw head.

For fast, efficient fastening in thin materials without the hassle of pre-drilling, the 1/2″ self drilling screw is a reliable and versatile choice.

Self drilling – 1/2 inch  available in Mombasa, Kwale, Kilifi, Lamu, Mandera, Marsabit, Isiolo, Meru, Embu, Kitui, Machakos, Makueni, Nyandarua,

Nyeri, Kirinyaga, Murang’a, Kiambu, Turkana, Samburu, Trans Nzoia, Uasin, Gishu, Elgeyo Marakwet, Nandi, Baringo,

Laikipia, Nakuru, Narok, Kajiado, Kericho, Bomet, Kakamega, Vihiga, Bungoma, Busia, Siaya, Kisumu, Homa Bay, Migori, Kisii, Nyamira, Nairobi.

In Nairobi you can find them at: Westlands, Dagoretti,  Lang’ata, Starehe, Kamukunji, Embakasi, and Kasarani, Kibera, Mathare,

Eastleigh, Karen, Lavington, Westlands, Parklands, Runda, South C, South, Ngong Road

In Mombasa you can find us at : Nyali, Mwembe Tayari, Majengo, Likoni ,Bamburi, Miritini