Nuts in Cu Al9 Ni3 Fe2 (*) 1/2" 200 pcs. 5/8" 100 pcs. Studbolts, ASTM A320 Gr. B8 Cl. 2; with nuts in Cu AI9 Ni3 Fe2 3/4" x 115mm 24 pcs. 7/8" x 130mm 24 pcs. 1" x 145mm 24 pcs. 1-1/8" x 170mm 20 pcs. 1-1/4" x 190mm 20 pcs. with 3.1 certificates (*) the customer cannot accept alternative materials like CA104.