Contact screw with cutter ring M6 x 16 Thread as per DIN 13 Head: hexagon with flange Surface treatment: Fe/Zn 8c2C as per ISO 4042 Contact screw with cutter ring M6 x 20 Thread as per DIN 13 Head: hexagon with flange Surface treatment: Fe/Zn 8c2C as per ISO 4042 Please quote for the taking of 10000p to 50000p 100000p and stock availability. It's annual consumption.