Semi-tubular pan head rivets DIN 6791 4x6 mm head diameter of 8 mm Material X6Cr17 in accordance with DIN EN 10263-5, and including PPAP level 3. Our client requires 285,000 units for one project and 615,000 units annually for another project, expected to span one or two years. I would kindly request a quotation, along with an approximate production time