Countersunk head, blue zinc. Solid substrate, no plugs.
Pack of 100 heavy-duty concrete and masonry screws, 7.5mm diameter × 100mm long with a Pozi countersunk head. Blue-zinc plated for internal use and sheltered-external applications.
The thread profile cuts its own purchase directly into the substrate — no plastic plugs, no wall plugs, no pre-expansion. Pre-drill with a 6mm masonry bit to a depth 10mm longer than the screw, blow the dust out, drive with a slow-speed cordless and T30 bit.
Rated for solid concrete, dense engineering brick, aerated block (reduce torque), and cured mortar beds. Not for use in plasterboard, lightweight thermal block below class 7, or external exposed-to-rain positions (use A4 stainless for those).
Email [email protected] with the product code GAG-MAS-75-100-100, the quantity you need and your delivery postcode. We reply with a written invoice and our bank details, usually within one business day. Payment is by bank transfer to our business IBAN on receipt of invoice. We dispatch once cleared funds arrive. Full process on the Place an order page.
| Size | 7.5 × 100 mm |
|---|---|
| Head | Pozi countersunk |
| Finish | Blue zinc plated |
| Drive | T30 Torx or PZ3 Pozi |
| Pilot hole | 6 mm × 110 mm |
| Pack quantity | 100 |