Hey DIYers and repair pros! These uxcell stainless steel screws are exactly what you need for all sorts of projects around the house, workshop, or job site. You get 20 pieces of M6x30mm flat head screws with that handy inner hex design that makes installation so much easier. Made from genuine 304 stainless steel, these bad boys are seriously corrosion-resistant - perfect for outdoor projects, marine environments, or anywhere moisture might be an issue. The specs are spot on: 30mm total length (about 1.18 inches), 4mm inner hex diameter, 12mm head diameter, and 1mm pitch. They're super strong and reliable, way better than those cheap hardware store screws that rust out after one season. Great for furniture assembly, wind power equipment, aerospace applications, office gear, petrochemical machinery, electronics, communications equipment, shipbuilding, and general construction. Honestly, these are the kind of screws you want to keep stocked in your toolbox because you'll find uses for them everywhere. The flat head design sits flush with surfaces, giving you a clean professional look every time. Whether you're building a deck, fixing machinery, or working on your car, these stainless steel screws won't let you down. They handle heavy loads like champs and the 304 stainless means they'll look good for years without corroding. Definitely a smart buy if you're tired of replacing rusty fasteners every year!