Uxcell a16032200ux1051 M5 Thread Dome Head Brass Cap Acorn Hex Nuts Thread size: M5/0.2"(Female. Diameter); product Name: cap nuts Material: brass(4.8 grade); weight: 51G Package Content: 20Pcs x cap nuts; main Color: brass tone Dome head size: 8x5mm/0.3"X0.2"(Mad*height); total height: 10mm/0.4" Hex Width: 8mm/0.3"; fastener Type: cap Acorn nut