Amazon.com: Lon0167 - Tornillo hexagonal de cabeza avellanada plana M6 x 1.181 in, DIN7991 para rosca izquierda, 4 piezas M6 x 1.181 in, Senkkopf Innensechskant Linksgewinde Bolzen DIN7991 : Industrial y Científico
Amazon.com: HONJIE Computer case cover PCI Slot Cover PCI Slot Cover Silver All Iron Solid with Screws Set of 12 : Electronics
Amazon.com: #6-32 x 1" Pan Head Machine Screw, Phillips Drive, 304 Stainless Steel 18-8, Bright Finish, Fully Machine Thread, Pack of 100 : Industrial & Scientific