Description
The HILLMAN FASTENERS 375300 is a Phillips flat head tapper concrete screw designed for anchoring into masonry, concrete, and block without the need for a separate anchor or plug. Each screw features a Blue Perma-Seal coating for corrosion resistance and ships with an installation bit included. At 3/16 inches in diameter and 1-1/4 inches in length with a 1-inch embedment depth, this fastener delivers an ultimate tension load of 730 lb in 4,000 psi concrete and an ultimate shear load of 1,090 lb in 4,000 psi concrete. The 100-pack format suits contractors and service techs working on volume installations.
This concrete screw is suited for light-to-medium duty fastening applications in residential and commercial construction. Typical uses include securing electrical conduit straps, mechanical equipment brackets, junction boxes, and similar hardware to poured concrete, concrete block, or masonry surfaces. The flat head profile sits flush after installation, making it appropriate where a low-profile finish is required. The included Phillips bit allows immediate use without sourcing additional tooling.
Key Features
- Blue Perma-Seal coating provides corrosion resistance in exposed or damp environments
- 1-inch embedment depth with ultimate tension of 730 lb in 4,000 psi concrete
- Ultimate shear load of 1,090 lb in 4,000 psi concrete
- Phillips flat head profile sits flush with the substrate surface
- Installation bit included in each 100-pack
- Direct-to-concrete installation no anchor or plug required
Compatibility
Designed for direct installation into poured concrete, concrete block, and masonry substrates. Requires a pre-drilled pilot hole sized for 3/16-inch tapper concrete screws.
Installation Notes
Installation is typically performed by electricians, plumbers, or general contractors working to applicable building codes. Drill a clean pilot hole to the correct depth before driving the screw an underdepth hole will prevent proper embedment. Use a hammer drill with a carbide-tipped bit rated for masonry when drilling the pilot hole. Clear debris from the hole before driving the fastener to achieve rated load values.
Technical Specifications
- Diameter: 3/16 inches
- Length: 1-1/4 inches
- Embedment Depth: 1 inch
- Head Style: Phillips Flat Head
- Drive Type: Phillips
- Coating: Blue Perma-Seal
- Ultimate Tension (4,000 psi concrete): 730 lb
- Ultimate Shear (4,000 psi concrete): 1,090 lb
- Package Quantity: 100
- Weight: 16.2 pounds
Standard Information
- Brand: HILLMAN FASTENERS
- Manufacturer Part Number: 375300
