500pcs) DIN 6926 M6 Self-Locking Hexagon Flange Nuts with Serration A2 Stainless Steel, Ships Free in USA by Aspen Fasteners, ASSP692626: Amazon.com: Industrial & Scientific
Amazon.com: IIVVERR M6 x 30mm Plastic Star Head Screw On Type Clamping Knob Grip Black 12pcs (M6 x 30 mm Tornillo de cabeza de estrella de plástico en el tipo de pinza