DIN 931 M20x90 Hastelloy 2.4819 120 pcs. DIN 931 M16x75 Hastelloy 2.4819 18 pcs. DIN 934 M20 Hastelloy2.4819 156 pcs. DIN 934 M16 Hastelloy2.4819 18 pcs. DIN 125 for M20 Hastelloy2.4819 120 pcs. DIN 125 for M16 Hastelloy2.4819 18 pcs. Need best price and delivery. with 3.1 certificates. Material from Europe