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Heavy Duty Self-Drilling Screws – Zinc for Steel
Heavy duty self drilling screws zinc are designed for fixing metal into heavy section steel up to 12mm without pre-drilling, with a bright zinc finish for internal use.
Timco Heavy Section Self-Drilling Screws – Hex Head – EPDM Washer – Zinc – 5.5mm x 100mm – Box of 100
In stock
£14.49 ex VAT(£17.39 inc VAT)
SKU:
ZH100W16B
Timco Heavy Section Self-Drilling Screws – Hex Head – EPDM Washer – Zinc – 5.5mm x 32mm – Bag of 100
Out of stock
£4.74 ex VAT(£5.69 inc VAT)
SKU:
ZH32W16
Timco Heavy Section Self-Drilling Screws – Hex Head – EPDM Washer – Zinc – 5.5mm x 32mm – Box of 100
Out of stock
£7.49 ex VAT(£8.99 inc VAT)
SKU:
ZH32W16B
Timco Heavy Section Self-Drilling Screws – Hex Head – EPDM Washer – Zinc – 5.5mm x 38mm – Bag of 100
Out of stock
£4.91 ex VAT(£5.89 inc VAT)
SKU:
ZH38W16
Timco Heavy Section Self-Drilling Screws – Hex Head – EPDM Washer – Zinc – 5.5mm x 38mm – Box of 100
In stock
£7.91 ex VAT(£9.49 inc VAT)
SKU:
ZH38W16B
Timco Heavy Section Self-Drilling Screws – Hex Head – EPDM Washer – Zinc – 5.5mm x 55mm – Bag of 100
In stock
£6.24 ex VAT(£7.49 inc VAT)
SKU:
ZH55W16
Timco Heavy Section Self-Drilling Screws – Hex Head – EPDM Washer – Zinc – 5.5mm x 55mm – Box of 100
In stock
£9.41 ex VAT(£11.29 inc VAT)
SKU:
ZH55W16B
Timco Heavy Section Self-Drilling Screws – Hex Head – EPDM Washer – Zinc – 5.5mm x 65mm – Box of 100
In stock
£10.24 ex VAT(£12.29 inc VAT)
SKU:
ZH65W16B
Timco Heavy Section Self-Drilling Screws – Hex Head – EPDM Washer – Zinc – 5.5mm x 80mm – Bag of 100
In stock
£9.33 ex VAT(£11.19 inc VAT)
SKU:
ZH80W16
Timco Heavy Section Self-Drilling Screws – Hex Head – EPDM Washer – Zinc – 5.5mm x 80mm – Box of 100
In stock
£12.41 ex VAT(£14.89 inc VAT)
SKU:
ZH80W16B
Timco Heavy Section Self-Drilling Screws – Hex Head – Zinc – 5.5mm x 100mm – Box of 100
In stock
£12.49 ex VAT(£14.99 inc VAT)
SKU:
ZH100B
Timco Heavy Section Self-Drilling Screws – Hex Head – Zinc – 5.5mm x 32mm – Box of 100
In stock
£5.49 ex VAT(£6.59 inc VAT)
SKU:
ZH32B
Timco Heavy Section Self-Drilling Screws – Hex Head – Zinc – 5.5mm x 38mm – Box of 100
In stock
£5.83 ex VAT(£6.99 inc VAT)
SKU:
ZH38B
Timco Heavy Section Self-Drilling Screws – Hex Head – Zinc – 5.5mm x 55mm – Box of 100
In stock
£7.41 ex VAT(£8.89 inc VAT)
SKU:
ZH55B
Timco Heavy Section Self-Drilling Screws – Hex Head – Zinc – 5.5mm x 65mm – Box of 100
In stock
£8.08 ex VAT(£9.69 inc VAT)
SKU:
ZH65B
Timco Heavy Section Self-Drilling Screws – Hex Head – Zinc – 5.5mm x 80mm – Box of 100
In stock
£9.99 ex VAT(£11.99 inc VAT)
SKU:
ZH80B
Why choose heavy duty self drilling screws?
- Self-drilling point removes the need for pre-drilling
- Designed for fixing into heavy section steel up to 12mm
- Bright zinc finish ideal for internal and dry environments
- Cost-effective alternative to stainless or coated screws
- Strong and reliable for structural steel fixing
What are self drilling screws for metal?
Self drilling screws for metal are engineered with a hardened drill point that allows them to cut through steel without the need for a pilot hole. These heavy duty self drilling metal screws are specifically designed for thicker steel sections, making them ideal for structural and construction applications.
Where are they used?
Heavy duty self drilling screws are commonly used for:
- Metal to metal fixing in structural steel
- Steel framework and construction projects
- Internal building applications where corrosion risk is low
- General construction self drilling screws for trade use
Zinc vs exterior vs bi-metal screws
- Zinc self drilling screws: Best for internal use and dry environments
- Exterior coated screws: Designed for outdoor and exposed conditions
- Bi-metal / stainless screws: Maximum corrosion resistance for harsh environments
Choosing zinc self drilling screws is ideal when cost-efficiency and performance in non-exposed conditions are the priority.
Available Sizes & Options
| Size | Type | Typical Use |
|---|---|---|
| 5.5 x 32mm | Standard / With EPDM Washer | Light metal-to-metal fixing where minimal penetration is required |
| 5.5 x 38mm | Standard / With EPDM Washer | General purpose fixing into heavy section steel |
| 5.5 x 55mm | Standard / With EPDM Washer | Fixing thicker materials or layered steel sections |
| 5.5 x 65mm | Standard / With EPDM Washer | Deeper penetration for multi-layer steel or heavier applications |
| 5.5 x 80mm | Standard / With EPDM Washer | Heavy-duty fixing where extended reach is required |
| 5.5 x 100mm | Standard / With EPDM Washer | Long reach fixing through thicker materials into steel |
When should you use zinc self drilling screws?
Use heavy duty self drilling screws zinc when working in internal environments where corrosion exposure is minimal. They are ideal for steel construction, framework, and general building applications where strength and speed of installation are essential.
Related Categories
- Exterior self drilling screws: Designed for outdoor use with enhanced corrosion resistance, ideal for exposed steelwork, cladding, and external construction projects.
- Bi-metal self drilling screws: Combine a hardened drill point with a stainless steel body, perfect for high corrosion environments and long-term external applications.
- Fibre cement screws: Engineered for fixing fibre cement boards to steel or timber, with features to prevent cracking and ensure secure installation.
Frequently Asked Questions
Do self drilling screws need a pilot hole?
No - self drilling screws have a built-in drill point that eliminates the need for pre-drilling.
What are self drilling screws for metal used for?
They are used for fixing metal to metal, particularly in steel construction and heavy section applications.
Can zinc self drilling screws be used outside?
Zinc screws are best suited for internal use. For external applications, coated or stainless options are recommended.
What is the difference between self drilling and self tapping screws?
Self drilling screws cut their own hole and thread, while self tapping screws require a pre-drilled hole.
