Acorn SW-MW1415G250 Metal to Wood Screw 1-1/2 in 250 Ct

Product Description

The ACORN SW-MW1415G250 is a self-piercing, sealing tapping screw designed for metal-to-wood fastening in roofing and siding applications. Made from heat-treated C1022 steel with a case-hardened finish, each screw features a 1/4-inch across-flat high-hat hex washer head with an assembled EPDM (Ethylene Propylene Diene Monomer) washer. The washer conforms to the surface on installation, creating a secure, weatherproof seal. A twin-lead Type 17 point combined with hi-lo threads reduces drive time and increases pullout resistance. All screws carry a 1,000-hour salt spray test dacro coating for corrosion protection. Sold in a 250-piece pack weighing 4.467 pounds.

These screws are suited for residential and commercial roofing and siding work where a fastener must penetrate metal panels and anchor into wood framing or sheathing. The EPDM washer assembly makes them a direct choice when a watertight seal at the fastener head is required. The hex washer head allows use with standard hex-drive impact drivers and screwguns, keeping installation efficient on production-volume jobs. Roofers, siding installers, and sheet metal contractors are the primary end users of this fastener style.

Key Features

• Self-piercing, sealing tapping screw design for metal-to-wood applications
• Heat-treated C1022 steel with case-hardened construction for strength and durability
• 1/4-inch across-flat high-hat hex washer head with assembled EPDM sealing washer
• Twin-lead Type 17 point and hi-lo threads for faster drive and improved pullout resistance
• 1,000-hour salt spray tested dacro base coating for corrosion resistance
• Packed 250 pieces per unit for job-site and inventory convenience

Compatibility

Designed for metal-to-wood fastening in roofing and siding applications where a self-piercing, self-sealing screw with an EPDM washer is required.

Installation Notes

Installation is performed with a standard hex-drive impact driver or screwgun fitted with the appropriate 1/4-inch hex socket bit. Apply consistent, controlled driving pressure to seat the EPDM washer flush against the surface without over-compressing it, which can compromise the seal. Follow applicable building code requirements for fastener spacing and penetration depth in the specific roofing or siding assembly. Wear appropriate PPE when working at height or with power fastening tools.