Structural Wood Screws 2-7/8? 50PK Heavy-Duty Flathead FastenMaster FMHLGM278-50 Install with power and precision using the FastenMaster FMHLGM278-50 HeadLok Deck Screws ? heavy-duty 2-7/8-inch galvanized steel screws engineered for superior holding strength in wood-to-wood applications. Featuring a flat head design and a patented Spider drive system, these screws deliver maximum torque transfer with zero cam-out, allowing for fast, smooth installation in decking, fencing, cabinetry, and structural sheathing (SIPs). Constructed from high-strength steel with a galvanized finish, each screw resists corrosion and is suitable for both indoor and outdoor use. The 2-7/8-inch length and 0.172-inch thread diameter provide deep penetration and secure anchoring in softwood and hardwood. With coarse threads and a self-drilling, self-tapping tip, these screws install quickly without pre-drilling in most applications, saving time and labor. The flat head sits flush with the surface, offering a clean, professional finish, while the internal Spider drive accepts the included T20 bit for seamless driving. The bit is integrated into the screw head design to prevent stripping, even under high torque. Each 50-piece box includes a driver bit, making it easy to start projects right away. Measuring 3.50 inches in total length and packaged in a compact 6.50 x 3.00 x 1.720 lb box, this set is ideal for contractors, builders, and DIYers who demand reliability and performance. The HeadLok design eliminates the need for washers or separate fastening systems, combining structural strength with ease of use. Features - 2-7/8-inch deck screws for strong, flush-fastening wood applications - Patented Spider drive prevents cam-out and increases installation speed - Includes T20 driver bit for immediate use - Flat head design sits flush with wood surface - Self-drilling and self-tapping tip eliminates need for pre-drilling - Coarse thread for secure grip in softwood and hardwood - Galvanized steel construction resists corrosion - Suitable for indoor and outdoor projects including decks, fences, and cabinets - No washer required ? integrated design for faster installation - Pack of 50 screws in boxed packaging for easy storage Specifications - Brand Name: FastenMaster - Model Name: FastenMaster HeadLok FMHLGM278-50 - Part Number: FMHLGM278-50 - UPC: 608309410577 - Product Type: Deck Screws - Sub Brand: HeadLok - Length: 2-7/8 inches - Thread Diameter: 0.172 in - Drive Style: Spider - Head Type: Flat Head - Thread Type: Coarse - Material: Steel - Primary Material: Steel - Color: Black - Finish: Galvanized - Self Drilling: Yes - Self Tapping: Yes - Driver Bit Included: Yes - Number in Package: 50 pk - Packaging Type: Boxed - Indoor or Outdoor: Indoor and Outdoor - Each Weight: 1.720 lb - Product Dimensions: 6.50 x 3.00 x 3.50 inches - Manufacturer: OMG Inc - Country of Origin: United States Product Application The FastenMaster FMHLGM278-50 HeadLok Deck Screw is designed for demanding wood fastening tasks in residential and commercial construction. Ideal for decking, fence building, kitchen cabinet installation, and SIP (Structural Insulated Panel) assembly, it provides a secure, flush-mount connection without splitting wood. Its corrosion-resistant galvanized finish and rugged steel core make it suitable for exterior environments exposed to moisture and temperature changes. The Spider drive system ensures reliable performance with cordless drivers, reducing bit wear and installation time. Trusted by professionals and DIYers alike, this screw delivers structural integrity, clean finish, and long-term durability in every application.