Hex Collar Weld Nut

六角焊接螺帽

四角焊接螺帽 

Carbon steel hex flange weld nut weld nibs

六角法蘭尼龍螺帽 

a) This metallic nut features a flanged base with serrated grooves encircling its body.

b) This part is used for secure fastening in mechanical assemblies, with features designed to resist loosening under vibration.

c) The external structure, the serrated grooves or knurls, enhances grip for improved stability. 

Asymmetrical steel stamped dowel obround edge