#4 x 1/2" (50 PCS) Black Oxide Self Tapping Screws, 304 Stainless Steel 18-8 Pan Head, Rust-Resistant Sheet Metal & Wood Screws for RV HVAC 3D Printing & DIY Projects (BST2.9x13)

HirtuOtter: Better and Easier Fastening SolutionsTired of screws that rust, strip, or fail? We focus on quality materials and thoughtful design to help you get the job done right.Genuine 304 Stainless Steel with Black OxideMade from authentic 18-8 stainless steel with a sleek matte black coating, these screws offer dependable corrosion resistance for both indoor and outdoor use. The black finish blends seamlessly with dark materials and modern decor.Note: 304 stainless may show slight magnetism due to cold working—this is normal and does not affect rust resistance.Self-Tapping Threads for Clean InstallationThe sharp tip and deep threads cut smoothly into wood, metal, plastic, and 3D prints. For soft materials like pine or thin sheet metal, no pre-drilling is needed. For hardwoods or thick metals, we recommend pre-drilling a pilot hole to prevent splitting and protect the screw head.Precision Phillips Head + Free Matching BitEach screw features a deeply machined Phillips head for a secure grip. Every pack includes a complimentary driver bit precision-matched to your screw size—so you can start driving right away with no searching for tools.The black oxide coating may show slight wear at the tip during installation. This is cosmetic only and does not affect performance.Durable Storage CaseYour screws and included bit arrive in a sturdy snap-shut plastic case that keeps everything organized, protected, and ready for your next project.Trusted for a Variety of ProjectsFrom RV repairs and HVAC installations to woodworking, 3D printing, and outdoor furniture—HirtuOtter screws deliver reliable holding power across applications.Frequently Asked QuestionsAre these really 304 stainless steel?Yes. Genuine 304 stainless steel base with black oxide coating.Why are they magnetic?304 stainless can become slightly magnetic during manufacturing. This is normal and does not affect rust resistance.Do I need to pre-drill?For soft materials, pre-drilling is optional. For hardwoods or thick metals, we recommend it.What driver bit is included?A Phillips bit matched to your screw size.Will the black finish wear off?Slight tip wear may occur during driving—cosmetic only. The underlying stainless steel remains rust-resistant.Need Help?Questions about sizing, installation, or your project? HirtuOtter customer support is here to assist.Ready to build? Add HirtuOtter screws to your cart today.

• 【304 STAINLESS STEEL WITH BLACK OXIDE - SLEEK & RUST-RESISTANT】 Authentic 304 stainless steel with black oxide coating offers reliable corrosion resistance plus a clean, matte finish that blends with dark materials. Note: 304 may show slight magnetism—this is normal and does not affect rust resistance.
• 【SELF-TAPPING THREADS - EASY DRIVING IN MULTIPLE MATERIALS】 Sharp tip and deep threads cut cleanly into sheet metal, wood, plastic, and 3D prints. For soft materials, no pre-drilling needed. For hardwoods or thick metals, we recommend a pilot hole to prevent damage.
• 【PRECISION PHILLIPS HEAD + FREE MATCHING BIT - ANTI-STRIP COMBINATION】 Deeply machined Phillips head grips tightly with the included driver bit—precision-matched to your screw size to minimize cam-out and prevent stripping. Each pack comes with the correct bit for the screws you order, so you can start driving right away without searching for the right tool. A woodworker noted: "Heads grip well with my drivers—none stripped during my project."
• 【DURABLE STORAGE CASE - KEEPS SCREWS & BIT ORGANIZED】 Sturdy snap-shut case keeps screws sorted and the included matching bit secure—portable, protected from moisture, and ready for your next project.
• 【VERSATILE - FOR RV, HVAC, WOODWORKING & 3D PRINTING】 Reliable holding power across multiple applications. Each pack includes ample fasteners plus a free size-matched driver bit. Questions? HirtuOtter customer support is here to help.