- 10-piece or 50-piece set of M3.5 and M4 hex socket cap head self tapping screws, length 8 to 45 mm, steel, carbon steel fasteners - DESIGN: Hex socket head provides uniform clamping force and reduces slip; compatible with standard hex keys, T-shaped hex keys, and electric screwdrivers; self tapping for easier installation and replacement of old bolts - APPLICATION: Used for assembly and connecting screws, nuts, and bolts; stabilizes furniture frames, supports, and structures; allows position adjustments for precise alignment during installation - ADVANTAGE: Suitable for low humidity environments; supports mass production mechanical components such as shafts, spindles, and sprocket assemblies; handles high pressure and high heat in structural applications like engine mounts, landing gear components, and power transmissions - USING SCENARIOS: - Furniture assembly or repair: secure frames, brackets, and panels; replace worn bolts - Machinery and equipment mounting: fasten components in workshop environments; fine tune alignment during installation - High load structural connections: engine mount or power transmission points in appropriate equipment requiring reliable fasteners