M4 x 16mm Hex Pan Head Screw | Black 304 Steel Metric M4 Bolt for 3D Printers CNC Robotics Extrusion Frames | Durable Pan Head Fastener

Description ✅ M4 thread – 4mm diameter, 16mm length✅ Hex pan head – strong and compact with clean appearance✅ 2.5mm hex drive – Allen key compatible✅ 304 stainless steel – rust-resistant and high strength✅ Black oxide coated – professional matte look, reduced glare