Grip-rite GRSSFW381215 Structural Screws

Product Description

The GRIP-RITE GRSSFW381215 is a box of PrimeGuard Plus flat washer head structural screws designed for heavy-duty fastening applications in structural assemblies. These screws feature a flat washer head profile that distributes clamping load across a wider bearing surface, reducing the risk of material pull-through in engineered lumber, ledger boards, and framing connections. Sold by the box, they are a standard supply item for framing contractors, deck builders, and structural carpenters working on residential and light commercial projects. The PrimeGuard Plus coating provides corrosion resistance appropriate for treated lumber contact.

These structural screws are suited for wood-to-wood and wood-to-engineered-lumber connections where a washer-head drive pattern is specified. Typical applications include deck ledger attachments, rim joist connections, stair stringer fastening, and general structural framing where code-compliant screw fasteners are required in place of through-bolts or nails. They are commonly used by framing crews and deck contractors working to IRC or IBC fastening schedules.

Key Features

• Flat washer head design distributes bearing load and reduces pull-through in structural panels and framing lumber
• PrimeGuard Plus coating for corrosion resistance, suitable for contact with ACQ and other pressure-treated lumber
• Structural screw geometry engineered for load-rated connections in framing applications
• Sold by the box for jobsite and shop inventory replenishment

Compatibility

Designed as an OEM-style structural fastener for wood framing, engineered lumber, and pressure-treated lumber applications where flat washer head structural screws are specified.

Installation Notes

Installation is performed by framing carpenters and deck contractors using a compatible driver bit matched to the screw head recess. Always verify that the screw length, diameter, and coating are appropriate for the lumber treatment type and the load requirements of the connection per applicable IRC or IBC fastening tables. Drive screws to full seating without overdriving, which can fracture the washer head flange or strip the connection. Do not substitute structural screws for hardware specified by engineered drawings without approval from the project engineer.