concrete screws
No Anchors. No Drill Bits. Just Drive In.
Hold Fast in Concrete. No Failures.
The Only Screw You Need for Concrete.
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Sinsun Masonry Screws your Direct-Fix Solution for Concrete & Brick
Sinsun masonry screws bite deep into concrete and brick. No anchors or plugs needed. Self-drilling tip saves 50% installation time. Priced from $0.18/screw. Secure your projects in one step.
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1. Self-Drilling Tip with Carbide
No pre-drilling or anchor sleeves needed. Our screw's tip drills its own hole in concrete, brick, or block. This cuts your installation steps from three (drill, clean, install) down to one, saving up to 50% on labor time per fixture.
2. Full-Thread Design for Maximum Grip
The high-low thread pattern pulls the screw deep and tight into the base material. This creates a pull-out strength up to 70% higher than partial-thread screws, preventing loosening from vibration and ensuring your fixtures stay securely in place.
3. Corrosion-Resistant Coating for Longevity
The specialized blue coating provides 500 hours of protection in salt spray tests. This means it withstands exposure to moisture and harsh weather, making it suitable for both indoor and outdoor applications without rusting prematurely.
4. Saves Time and Money on Every Job
By eliminating the need for separate anchors, plugs, and specific-sized drill bits, you reduce your inventory and cost per installation. For a typical project, this can save between $5 to $15 in ancillary materials and 30 minutes of work.
self tapping concrete screws
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heavy duty concrete screws
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Find the right concrete screw for your job. SINSUN offers flat head for a flush finish, hex washer head for high-torque driving, and pan head for versatile use. Get a secure anchor every time.
| Parameter | Specification & Description | Common Options / Examples |
| Product Name | Concrete Screw, Masonry Screw, Self-tapping Masonry Anchor | Tapcon, Hex Head Concrete Screw, Flat Head Concrete Screw |
| Drive Type | The type of tool bit required to install the screw. | Phillips (PH)- Less common now. |
| Hex Washer Head- Most common, requires a socket or wrench. High torque capability. | ||
| Star (Torx)- Becoming more popular for better torque transfer and reduced cam-out. | ||
| Head Style | The shape of the screw head, determining how it sits on the material. | Flat/Countersunk Head- Sits flush with the material surface. |
| Hex Washer Head- Protrudes, allows for a washer, high clamping force. | ||
| Round Head- Decorative, provides a larger bearing surface. | ||
| Thread Type | The design of the threads, crucial for cutting into masonry. | Full Thread- Threads run the entire length of the shank. Provides higher pull-out strength. |
| Hi-Low Thread Design- Alternating high and low threads. The high threads cut into the masonry, while the low threads remove debris. This is the standard. | ||
| Point Type | The tip of the screw, designed for easy starting and self-tapping. | Self-drilling Point- Acts like a drill bit, often does not require a pre-drilled hole (for softer materials) but for concrete, a pilot hole is always required. |
| Sharp Point- Standard for concrete where a pilot hole is pre-drilled. | ||
| Material & Finish | What the screw is made of and its corrosion protection. | Material: High-Carbon Steel, Stainless Steel (304 or 316 for high corrosion resistance). |
| Finish:Bright Zinc（basic indoor use),Hot-Dip Galvanized(moderate moisture),WeatherGuard庐 / Blue(epoxy or polymer coating for excellent corrosion resistance). | ||
| Diameter | The nominal outer thread diameter. | 1/4"(Most common for heavy-duty) |
| 3/16"(Most common standard) | ||
| 5/16"(Heavy-duty) | ||
| 3/8"(Extra heavy-duty) | ||
| Metric: M4, M5, M6, M8, M10 | ||
| Length | The total length of the screw from under the head to the point. | Ranges from3/4"(20mm) to6"(150mm) or more. Common lengths: 1-1/4", 1-3/4", 2-1/4", 3", 4". |
| Minimum Embedment | The minimum depth the screw must penetrate into the concrete base material. | Typically1 inch(25 mm) for most sizes.Critical for achieving rated strength. |
| Pilot Hole Diameter | The required diameter of the hole that must be drilled before installing the screw. | For 3/16" screw: 5/32" (4.0 mm) |
| For 1/4" screw: 3/16" (4.8 mm) | ||
| Always refer to manufacturer's chart. Incorrect hole size is the #1 cause of failure. | ||
| Pilot Hole Depth | The depth of the pre-drilled hole. | Hole Depth = Screw Length + 1/2"(This allows space for dust/debris so the screw can be fully seated). |
| Specification | Typical Value (for 1/4" Hex Head in 2000 psi concrete) | Notes |
| Shear Strength | ~ 1,800 - 2,200 lbs (8 - 10 kN) | Resistance to lateral (sliding) force. |
| Pull-Out (Tensile) Strength | ~ 1,000 - 1,500 lbs (4.5 - 6.7 kN) | Resistance to being pulled straight out. |
| Torque Value (Installation) | ~ 25-35 ft-lbs (34-47 Nm) | Do not over-torque. The screw should be snug, not tightened to the point of stripping the threads in the concrete. |
| Minimum Base Material Thickness | Must exceed the embedment depth. | The concrete/brick must be thick enough to allow for the minimum embedment (typically 1"). |
Important Installation Notes
screws for concrete walls
Sinsun concrete screws are engineered for direct fastening into solid concrete walls (C25-C50 hardness) and other masonry substrates. The high-low thread design and case-hardened steel core deliver exceptional pull-out strength, enabling secure anchoring of structural brackets, heavy machinery, and safety fixtures up to 50mm thick without the need for anchors or plugs. The corrosion-resistant coating guarantees long-term performance in demanding indoor and outdoor environments.
best screws for cinder block
Sinsun screws for cinder block feature a specialized double-thread design that delivers high pull-out resistance in low-density masonry, effectively preventing material spin-out during installation. The hardened steel construction allows for direct fastening of fixtures, shelving, and electrical conduits into hollow blocks without requiring anchors, providing a secure hold in material depths up to 50mm. The corrosion-resistant coating ensures durability in both indoor and damp environments.
masonry screws for brick
Sinsun concrete screws anchor directly into brick, concrete, and C20+ hard substrates without plugs. The hardened steel core cuts through up to 5mm thick steel plates for combined metal-to-base fastening. Corrosion-resistant coating ensures durability, and the self-tapping thread provides high pull-out strength in materials up to 50mm thick, ideal for permanent structural fixtures without pre-expansion.
concrete screws for framing
Sinsun concrete screws are high-hardness (HRC 52-54) fasteners with a special thread design for direct installation into concrete, steel, and solid wood without anchors, suitable for base materials up to 10mm thick, ideal for securing framing channels, steel tracks, and structural fixtures to concrete or steel substrates.
01020304
Q: What is the difference between Sinsun concrete screws and concrete anchors?
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A: Sinsun concrete screws are tapped (thread-forming) screws installed directly into a pre-drilled hole. Mechanical anchors, like sleeve or wedge anchors, require a separate component (the sleeve) to expand and grip the concrete.
Q: What is the main advantage of a concrete screw over a lag shield anchor?
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A: Concrete screws offer immediate holding power without the expansion step of a lag shield. They are also removable and generally faster to install in applications like securing wood or metal framing to concrete.
Q: What material thickness can Sinsun concrete screws fasten?
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A: The grip range depends on the screw length. For example, a 3-inch screw fastening a 1-inch thick steel plate to concrete has an effective embedment of approximately 2 inches, which is sufficient for most framing applications.
Q: Can I use Sinsun concrete screws in brick or hollow block?
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A: No. They are designed for solid base materials like solid concrete, solid brick, and stone. Using them in hollow materials will not provide sufficient holding strength.
Q: Are concrete anchor screws the same as lag bolts for concrete?
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A: No. A true lag bolt (or lag screw) for concrete requires a separate lead sleeve anchor (lag shield) to function. A concrete anchor screw is a complete, self-tapping fastener that does not need a shield.
Q: Do concrete screws work for overhead applications?
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A: Yes, Sinsun high-hardness concrete screws are suitable for overhead installations into concrete, as they create a tight mechanical lock through their threads and do not rely on gravity.
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