• Material: Carbon karfe, bakin karfe, tagulla.
• Nau'in kai: lebur/countersunk, kwanon rufi, Flat sau biyu, kan wafer, CSK tare da hakarkarin 4(6)
• Ƙarshe: zinc plated, Black Oxide, Nickel, Rupert, Dacromet, da sauransu
• lSaukewa: DIN7505
• Girman: M3-M8