M5 x 40mm Socket Head Cap Screws 12.9 Grade Alloy Steel, Allen Socket Drive, Black Oxide Finish, Machine Thread, 100 PCS

Made of 12.9 Grade Alloy Steel, with a black surface oxidation treatment, these bolts are strong, durable, and have excellent wear resistance, high hardness, and high strength. Please do not install them in wet environments or outdoors., Metric M5 screws,Thread Diameter: 5mm; Thread Length: 40mm; Pitch Size: 0.8mm., Package Included: 100 x socket head screws, Perfect For Interior Renovation, Mechanical Installation Communication Equipments and Ship Assembly