HILLMAN 1/2 in. D X 4-3/4 in. L Steel Round Head Strike Anchor

The Hillman 1/2 in D x 4-3/4 in L Steel Round Head Strike Anchor is engineered to deliver rock-solid mounting into concrete. This durable steel anchor features a round head for a clean, finished look and a 1/2" diameter that accepts a matching screw for a streamlined, single-piece fastening solution. With a minimum embedment of 2-1/2" and a screw length of 4-3/4", it’s designed to provide dependable holding power for fixtures, brackets, and hardware in concrete applications.

Key specifications

• Diameter: 1/2"
• Length: 4-3/4"
• Minimum embedment: 2-1/2"
• Head style: Round
• Material: Steel
• Required drill hole size: 1/2"
• Screw included: Yes (screw length 4-3/4")
• Thread type: High/Low
• Application: Concrete
• Capacity: Up to 400 lbs (typical)
• Package quantity: 1 per box
• Brand: Hillman

Why this Hillman strike anchor stands out

• All-in-one fastening solution: The included screw eliminates the need to source separate hardware, streamlining installation and reducing parts to manage on site.
• Engineered for concrete: The high/low thread pattern helps maximize bite in masonry, delivering steady pull-out resistance and reliable performance under load.
• High-load capability: Rated for up to 400 lbs in properly prepared concrete, making it suitable for securing heavier fixtures, brackets, conduit hangers, and other hardware.
• Clean aesthetic and versatile fit: The round head provides a neat appearance on exposed installations while still offering solid engagement in the concrete substrate.

Ideal use cases

• Mounting electrical conduit brackets and raceways to concrete walls or floors
• Securing lightweight to medium fixtures such as shelves, brackets, or anchor points for security devices
• Attaching hardware to concrete surfaces where a discrete, robust anchor is preferred

Installation at a glance

1. Drill a 1/2" hole to the recommended depth for the concrete surface.
2. Clean the hole to remove dust and debris for optimal grip.
3. Insert the strike anchor into the hole and drive in the included screw until the fixture sits firmly.
4. Tighten carefully to avoid overtightening, which can compromise embedment and load capacity.

Practical tips for best results

• Verify concrete conditions and ensure the embedment depth is achieved for optimal load performance.
• Use the full 4-3/4" screw length to maximize engagement with the anchor and substrate.
• For repeated removal and reinstallation, consider the fixture’s load path to prevent loosening over time.
• Store and handle the boxed unit to protect the screw and anchor threads from damage prior to installation.