XunLiu 50PCS Grade 149 Alloy Steel Hex Socket Head Cap Screws Allen Wrench Drive Knurled Screws Black M25 28MM

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., Package Content: (+/-5%)Hex Socket Cap Screw