Fasteners for outdoor and moisture-prone projects, offering corrosion resistance and self-tapping convenience. Bolt Base Self Tapping Screws give confidence that fixtures stay secure with minimal fuss. Are they suitable for heavy structural work or better for light, routine assemblies?
⚡ At a Glance
- • Corrosion Resistance: A2-70 stainless steel resists rust in damp and coastal environments
- • Best for: Outdoor fixtures and high-moisture areas such as garden furniture, cladding and coastal repairs
- • Not ideal for: Hard, thick steel or masonry where specialist fasteners or pre-drilling are required
A2-70 stainless steel Pozi flanged self-tapping screws, 4.2mm outer diameter and 13mm length excluding head. Supplied in a 100-count pack, suitable for routine outdoor and moisture-prone fastening tasks.
Long-lasting outdoor performance – with A2-70 stainless steel
A2-70 indicates a stainless steel grade known for good corrosion resistance, chosen for environments with regular exposure to moisture. The alloy composition reduces surface oxidation compared with plain steel.
Reduced risk of rust means fittings stay secure and require less maintenance in garden, decking and coastal applications.
Speedy fitting in thin materials – thanks to Pozi flanged self-tapping design
Self-tapping threads cut and form mating threads as the fastener is driven, while the Pozi recess allows positive engagement with Pozi screwdrivers. The flanged head eliminates the need for a separate washer in many cases.
Faster installation for trim, brackets and light assemblies, saving time on routine DIY and repair jobs.
Neat, secure seating – with a flanged head
A flanged head increases the contact area beneath the head, spreading load and reducing the tendency for the fastener to pull through softer substrates. The flange also provides a cleaner finish where visible.
Fixings hold more securely in soft boards and cladding, producing tidy, professional-looking results.
✨ The 4 Key Reasons for Bolt Base Self Tapping Screws
- Self-tapping threads – Faster installation in thin metals and plastics, reducing labour time
- Flanged head – Wider bearing prevents pull-through on soft boards and cladding
- Pozi drive compatibility – Works with common Pozi drivers for reliable torque transfer
- Bulk 100 pack – Plenty of spares for multiple repairs and larger projects
📋 Technical Details at a Glance
- Material: A2-70 stainless steel
- Head type: Pozi flanged
- Thread type: Self tapping
- Outer diameter: 4.2mm
- Length: 13mm (excluding head)
❓ Frequently Asked Questions
Q: Are these screws suitable for outdoor use?
A: Yes, A2-70 stainless steel construction makes the screws corrosion resistant and suitable for outdoor or high-moisture environments.
Q: What are the dimensions of the screws?
A: Outer diameter is 4.2mm and length is 13mm, measured excluding the head.
Q: What driver type do they need?
A: Pozi drive recess, so use a compatible Pozi screwdriver or bit for best engagement.
🏆 Our Verdict
These screws suit DIYers, tradespeople and gardeners who need rust-resistant fasteners for light assemblies. The combination of A2-70 stainless steel and a Pozi flanged self-tapping design gives durable, neat fixings in damp or outdoor conditions. Supplied in a 100-count pack, they represent practical long-term value for routine outdoor maintenance and repairs.
