540 Piece M3 Hex Socket Head Cap Screws Kit With Nuts Washers In Black 6mm 8mm 12mm 16mm 20mm 25mm 30mm Beefy Full Threaded 12.9 Grade Alloy Steel Hardware Set

540-Piece M3 Hex Socket Cap Screws Kit with Nuts & Washers
✔️ 7 M3 lengths, 12.9 grade alloy steel, black oxide finish

This beefy hardware set includes M3 hex socket cap screws in 7 lengths, matching nuts, lock washers, and flat washers. Packed in a durable transparent box for easy size selection and organized storage, it's ideal for precision projects, electronics, home appliances, and hobby builds.

✅ Includes M3x6mm, M3x8mm, M3x12mm, M3x16mm, M3x20mm, M3x25mm, M3x30mm screws, plus nuts, lock washers, flat washers
✅ 12.9 grade alloy steel with black oxide finish for high hardness and corrosion resistance
✅ Nuts, lock washers, and flat washers included to distribute load and protect threads
✅ Transparent storage box keeps parts organized for quick selection
✅ Wide applications in precision machinery, electronics, appliances, locks, lamps, and toys
✅ CHOKING HAZARD, small parts; keep away from children

💡 What is the best way to choose M3 hex socket head cap screws for project assemblies? A quick, practical guide to picking the right size, material, and finish for consistent results. - M3 hex socket head screws in 6-30 mm lengths used in metal and plastic assemblies - 12.9 grade alloy steel with black oxide finish for strength and corrosion resistance - Nuts, lock washers, and flat washers included to improve grip and load distribution