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The GRIP-RITE GRSSFW921225 is a box of PrimeGuard Plus flat washer head structural screws designed for structural fastening applications in wood-frame construction. These screws feature an integrated flat washer head that distributes clamping load across a broader surface area, reducing the risk of pull-through in structural panel and framing connections. Sold by the box, they are a go-to fastener for contractors and tradespeople working on structural assemblies that require a code-compliant mechanical connection. The flat washer head profile allows for flush or near-flush installation in a variety of structural substrates.
Flat washer head structural screws like the GRSSFW921225 are used in residential and light commercial wood-frame construction, including deck framing, ledger connections, rim board attachments, and shear wall panel fastening. They are installed by framers, general contractors, and finish carpenters wherever a positive mechanical fastener with bearing-surface distribution is required. The box packaging makes them practical for jobsite use and bulk fastening tasks.
Designed as an OEM-style structural fastener for use in wood-frame construction assemblies where flat washer head screws are specified.
Structural screws should be installed by a qualified framing contractor or carpenter in accordance with applicable building codes and any relevant ICC or IBC fastening schedules. Always follow the fastener manufacturer load tables and local jurisdiction requirements for structural connections. Pre-drilling may be required in dense lumber species or near board ends to prevent splitting. Do not substitute structural screws for bolts or hangers where a specific connector is specified on engineered drawings.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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