uxcell M3 Thread Insert Lock Screw Fastener Nylon Hex Nuts Black 100pcs Product Name: Hex Nut; Material: Nylon Weight: 10g; Package Content: 100pcs(+/-2%) x Hex Nuts Main Color: Black Thread Size (A): M3; Hex Height (B): 2.5mm/ 0.1" Hex Width (C): 5.5mm/ 0.2"; Pitch: 0.5mm