M3 x 20mm Socket Head Cap Screw – Hex Drive | Long Steel Bolt for 3D Printers, CNC, Robotics, and V-Slot Frame Assembly

Description ✅ M3 thread – 3mm diameter✅ 20mm length – long reach for deep mounting✅ Hex drive socket – 2mm Allen key compatible✅ Black oxide or zinc-plated steel✅ Common in Ender 3, CR-10, Prusa, Voron, and frame kits