Heavy-Duty Concrete Screw Anchors (M6-M20) | Self-Tapping Concrete Bolts | Hex & Countersunk Head

Concrete Screw Anchors (M6-M20) are high-performance threaded fasteners designed to tap their own threads directly into concrete, brick, or block. Unlike expansion anchors, Concrete Screws do not create expansion stress, allowing for closer edge distances and reduced spacing. They are fully removable, making them the perfect choice for both permanent structural fixings and temporary site installations.

  • Installation: Direct screw-in after drilling; no expansion shield or resin required.
  • Head Styles: Hex Head with washer, Countersunk (Flat), Pan Head.
  • Materials: Hardened Carbon Steel (Zinc/Galvanized), Stainless Steel 316/304.
  • Key Advantage: Immediate loading capacity and high vibration resistance.
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Advanced M6-M20 Concrete Screw Anchors: The Modern Fastening Solution

Our Concrete Screw Anchors represent the latest evolution in mechanical anchoring. By cutting a thread directly into the base material, these self-tapping concrete bolts provide a high-strength connection without the radial expansion forces associated with wedge anchors. This makes them ideal for use in cracked concrete and applications close to edges.

Whether you need a Hex Head Concrete Screw for heavy racking or a Countersunk Screw for flush-mount window frames, our hardened steel fasteners ensure a fast and secure installation every time.

Key Advantages Over Traditional Anchors

  • Fast Installation: Simply drill, clean, and drive. No torque wrench or setting tool needed.
  • Fully Removable: Ideal for temporary structures, formwork, or racking that may need relocation.
  • No Expansion Stress: Allows for significantly smaller edge distances and spacing between anchors.
  • High Vibration Resistance: The continuous thread engagement provides superior grip under dynamic loads.

Concrete Screw Dimensions & Drill Requirements

Screw SizeDrill Bit Dia.Min. DepthMax. Fixture Thickness
M66 mm40 mm10 – 50 mm
M88 mm60 mm15 – 80 mm
M1010 mm75 mm20 – 100 mm
M1212 mm90 mm25 – 120 mm
M16-M2016/20 mm120+ mmHeavy Duty Only

3-Step Quick Installation Guide

  1. Drill: Drill a hole using a bit the same diameter as the concrete screw’s nominal size (e.g., use an 8mm bit for an M8 screw).
  2. Clean: Blow out all dust and debris. This is critical to prevent the screw from seizing during installation.
  3. Drive: Use an impact wrench or socket to drive the screw through the fixture into the concrete until the head is seated.

Where to Use Concrete Screw Anchors?

  • Warehouse Racking: Quick and easy installation of pallet racks.
  • Temporary Structures: Site fencing, scaffolding, and formwork.
  • Public Infrastructure: Stadium seating, railings, and acoustic barriers.
  • Glazing & Doors: Securing frames directly into masonry or concrete.

Direct Factory Pricing for Concrete Screw Anchors

Looking for high-tensile concrete screws with custom coatings like Ruspert or Hot Dip Galvanized? We supply bulk orders globally with full testing certification. Contact us today for a free sample pack!

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Common Name

Concrete Bolt, Tapper, Screw Anchor

Material

Heat-Treated Carbon Steel, SS316

Diameter Range

M6, M8, M10, M12, M14, M16, M20

Surface Finish

Zinc Plated, Ruspert Coating (Salt spray1000h+), HDG

Thread Type

High-Low Thread for superior grip

Base Material

Cracked/Uncracked Concrete, Solid Brick, Stone