M8 304 Stainless Steel Dome Head Cap Acorn Hex Nuts Silver Tone 50pcs Material: 304 Stainless Steel; Weight: 399g Package Content: 50(+/-2%)pcs x Cap Nuts; Main Color: Silver Tone Hex Size: 13mm/ 0.5"; Dome Head Size: 8x12mm/ 0.3"x0.47"(H*Max.D) Total Height: 15mm/ 0.6"; Thread Size: M8 Product Name: Cap Nuts