Hillman Fasteners 375302 Concrete Screw 3/16x2-1/4 100PK

Product Description

The HILLMAN FASTENERS 375302 is a Phillips flat head tapper concrete screw designed for direct fastening into concrete, block, and masonry without requiring an anchor. Each screw measures 3/16 inches in diameter by 2-1/4 inches in length and features a Perma-Seal coating for corrosion resistance. The kit includes a drill bit sized for the application. With a 1-1/2 inch embedment depth, this fastener delivers an ultimate tension load of 1,210 lb in 4,000 psi concrete and an ultimate shear load of 1,280 lb in 4,000 psi concrete. Electricians, plumbers, HVAC installers, and general contractors use these screws for securing conduit straps, pipe hangers, equipment brackets, and similar trade hardware to concrete substrates.

This screw is suited for light to medium-duty anchoring applications in residential and commercial construction. Typical uses include attaching electrical boxes, strut channel, pipe clamps, and structural brackets directly to poured concrete or CMU block. The included drill bit ensures the pilot hole matches the thread profile of the tapper screw for a proper mechanical fit. The flat head profile sits flush with the work surface, making it a practical choice wherever a low-profile fastening point is needed.

Key Features

• 3/16 inches x 2-1/4 inches tapper concrete screw — no anchor required
• Perma-Seal coating provides corrosion resistance for long-term durability
• Phillips flat head profile sits flush with the mounting surface
• 1-1/2 inch embedment depth with rated load values in 4,000 psi concrete
• Ultimate tension load: 1,210 lb; ultimate shear load: 1,280 lb
• Includes matching drill bit; packaged 100 screws per pack

Compatibility

Designed for direct installation into poured concrete, concrete block, and masonry substrates where a 3/16 inch diameter tapper-style concrete fastener is specified.

Installation Notes

Installation is typically performed by licensed electricians, plumbers, HVAC technicians, or general contractors working to applicable building codes. Drill the pilot hole to the required depth using the included bit before driving the screw. Ensure the base material is free of debris and that embedment depth meets the 1-1/2 inch minimum. Do not overtighten — strip-out will reduce holding values below rated loads.