Concrete & Masonry Screws
Blue Ceramic Hex Washer Head Concrete Screw
3/16" and 1/4" hex washer head masonry screws with blue ceramic coating and Hi-Lo thread.
3/16"Carbon steel
Concrete & Masonry Screws
High-Low Thread Concrete Screw, Ceramic Coated
Concrete spoon-point screw with high-low thread, anti-slip ribs under head, colour ceramic coatings to C4.
- Material
- Hardened steel
- Thread
- High-low
- Head
- Countersunk with ribs
- Coating
- Ceramic, HDG
- Colours
- Silver, brown, black, grey, red, blue, green
- Corrosion class
- Up to C4
- Free samplesUp to 20 pcs, ships in 7 days
- Lot test reportHardness, coating, drill time
- Made to orderCustom lengths, finishes, head marks
- Export readyFOB, CFR or CIF with full documents
Overview
A high-low thread alternates tall cutting threads with short ones, lowering driving torque while keeping pull-out strength. Ribs under the head lock the screw against back-out.
Ceramic coatings in silver, brown, green, black, grey or red.
Applications
- Masonry and block
- Fibre cement
- Exterior battens
Used in these projects
Key features
- Lower driving torque
- Anti-slip ribs
- Colour-coded coatings
- C4 corrosion grade available
Specifications
Typical values. Every dimension, hardness and coating is confirmed in writing with your quotation.
| Material | Hardened steel |
|---|---|
| Thread | High-low |
| Head | Countersunk with ribs |
| Coating | Ceramic, HDG |
| Colours | Silver, brown, black, grey, red, blue, green |
| Corrosion class | Up to C4 |
| Standard | DIN |
| MOQ | 500 kg |
| HS code | 7318.14 / 7318.12 (by type) |
Buying guide
Applies to all concrete & masonry screws.
Hole size matters
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.
Embedment depth
Allow at least 25 mm embedment for light fixings and 32–44 mm for structural ones, and keep 2× embedment from free edges.
Corrosion
Blue or silver ceramic coatings suit interior and protected exterior use. For wet or treated concrete use stainless bi-metal screw anchors.
Ordering
Packing and delivery
Standard terms for this product. Tell us if your market needs something different.
PackingSmall boxes, buckets or 20–25 kg cartons on fumigated pallets; private label available.
Lead timeSamples in 7 days; production 25–35 days after deposit.
PaymentT/T 30 % deposit, 70 % against B/L copy, or L/C at sight.
ShippingFOB Shanghai or Ningbo, CFR or CIF to your port.
Questions about this product
Do concrete screws need an anchor plug?
No. They tap their own thread directly into the masonry hole. Only the drill hole is needed.
Can concrete screws be reused?
They can be removed, but we recommend a new screw for structural re-installation because the thread wears.
What diameters do you supply?
3/16" and 1/4" masonry screws, and 6–14 mm screw anchors, in lengths up to 300 mm.
Concrete & Masonry Screws
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Request for quotation
Request a quotation for High-Low Thread Concrete Screw, Ceramic Coated
Tell us the screw, size and quantity. A sales engineer replies within one business day with price, lead time and a sample offer.
- Emailinquiry@china-screw-factory.com
- WhatsApp+86 176 2154 1688
- Phone+86 176 2154 1688