10PCS Grade 14.9 Alloy Steel Hex Socket Head Cap Screws Allen Wrench Drive Knurled Screws

• Hardness of 14.9, very durable hardness, not easy to damage.
• The surface is plated with anti-rust coating to prevent rust damage.
• This mechanical screw is widely used for fixing the housing or internal parts of various types of machinery, household equipment, office equipment.
• Knuled head easy to use.