Headline: Professional M4 Shoulder Bolt Kit – Precision, Durability, and Convenience Upgrade your mechanical projects with this 20-Piece M4 x 10mm Shoulder Bolt Set, crafted from premium 304 Stainless Steel (18-8). Engineered for superior performance, these bolts offer outstanding resistance to corrosion, moisture, and chemical exposure, ensuring longevity in both industrial and marine environments. Key Features & Specifications: Precision Dimensions: Features an M4 thread (0.7mm pitch) with a smooth 5mm diameter shoulder and 10mm shoulder length. Perfect for use as pivot points, axles, or shafts in moving parts. Complete Kit: Includes 20 silver shoulder bolts and a compatible hex wrench for immediate installation. Versatile Application: Ideal for automation equipment, precision instruments, 3D printer upgrades, furniture mechanisms, and structural framing. Storage Solution: Supplied in a durable transparent storage box to keep your fasteners organized and ready for transport. Whether you are maintaining industrial machinery or building a DIY project, this set delivers the stable, high-stress performance you need. Please verify all dimensions (Shoulder Ø 5mm, Length 10mm) before purchase.