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Grade A4 stainless steel hex head masonry screws for self-tapping direct fixing into concrete, masonry and pre-cast concrete beams. Corrosion-resistant construction suited to external, coastal and chemically aggressive environments. 6.3mm thread, available in anchor lengths from 32mm to 250mm.
Categories: Concrete Screws, Fixings / Fastenings
These A4 grade stainless steel masonry screws provide the same self-tapping, no-plug installation as the standard carbon steel range, with the added corrosion resistance of 316 stainless steel construction. Grade A4 is the appropriate specification wherever fixings will be exposed to moisture, external weathering, coastal conditions or chemically aggressive environments — making these the correct choice when a standard zinc-plated screw won't hold up long-term.
Available in 6.3mm thread diameter with a 5mm pilot hole, the range covers anchor lengths from 32mm through to 250mm in hex head format, driven with standard tooling.
Call us on 0121 333 7288 or email sales@fixingsplus.co.uk to check availability.
| Part No. | Thread Size (mm) | Hole Dia. (mm) | Anchor Length (mm) | Thickness to Fix (mm) |
| A4TH63032 | 6.3 | 5 | 32 | 7 |
| A4TH63045 | 6.3 | 5 | 45 | 20 |
| A4TH63057 | 6.3 | 5 | 57 | 20 |
| A4TH63070 | 6.3 | 5 | 70 | 20 |
| A4TH63082 | 6.3 | 5 | 82 | 20 |
| A4TH630100 | 6.3 | 5 | 100 | 20 |
| A4TH630125 | 6.3 | 5 | 125 | 20 |
| A4TH630140 | 6.3 | 5 | 140 | 20 |
| A4TH630160 | 6.3 | 5 | 160 | 20 |
| A4TH630180 | 6.3 | 5 | 180 | 20 |
| A4TH630200 | 6.3 | 5 | 200 | 20 |
| A4TH630250 | 6.3 | 5 | 250 | 20 |
