Pcsmm Acorn Cap Nuts, 304 Stainless Steel Metric Hex Cap Dome Head M4x0.7 80
Using a suitable tool (such as a wrench), tighten the coarse thread nut securely onto the threaded component until it is tight. Made of 304 stainless steel, it exhibits excellent anti-rust and anti-oxidation properties, as well as high hardness.
M4x0.7mm DIN6923 Serrated Flange Nuts 100 Pack 304 Stainless M4x0.7mm, 100 pcs
[FEATURE] Flange works like a washer to distribute the load. Serrations can help grip the material surface and prevent the nuts from loosening due to vibration.