
Flat Head Masonry Screw
Phillips countersunk concrete screw in blue, white or black coating for flush fixing into masonry.

3/16" and 1/4" hex washer head masonry screws with blue ceramic coating and Hi-Lo thread.
Drill a pilot hole, drive the screw, done. Hardened Hi-Lo threads cut into concrete, brick and block, and the blue ceramic coating protects against moisture in masonry.
Hex washer head for setting with a nut driver; slotted and Phillips versions available.
Typical values. Every dimension, hardness and coating is confirmed in writing with your quotation.
| Diameter | 3/16", 1/4" |
|---|---|
| Length | 1-1/4"–6" |
| Material | Carbon steel, hardened |
| Head | Hex washer, slotted |
| Thread | Hi-Lo |
| Coating | Blue ceramic |
| Pilot hole | 5/32" for 3/16", 3/16" for 1/4" |
| MOQ | 5,000 pcs |
| HS code | 7318.14 / 7318.12 (by type) |
Applies to all concrete & masonry screws.
Drill the hole to the diameter we specify for each screw (for example 5/32" for 3/16" screws, 3/16" for 1/4"). An oversized hole costs most of the pull-out strength.
Allow at least 25 mm embedment for light fixings and 32–44 mm for structural ones, and keep 2× embedment from free edges.
Blue or silver ceramic coatings suit interior and protected exterior use. For wet or treated concrete use stainless bi-metal screw anchors.
Standard terms for this product. Tell us if your market needs something different.
No. They tap their own thread directly into the masonry hole. Only the drill hole is needed.
They can be removed, but we recommend a new screw for structural re-installation because the thread wears.
3/16" and 1/4" masonry screws, and 6–14 mm screw anchors, in lengths up to 300 mm.
Tell us the screw, size and quantity. A sales engineer replies within one business day with price, lead time and a sample offer.