Flange screws DIN 1662 ISO 15071 M5x20 Quantity/Year: 20 000 pcs. M5x16 Quantity/Year: 10 000 pcs. Material: steel 8.8 *Surface treatment: 8.8 Y 1300-3 colour silver *PPAP level 3 *Thread tolerance class 6e. *The dimensions agrees with ISO 15071:1999.