M12 x 1.75 Acorn (Cap) Nut DIN 1587 Plated M12 x 1.75 acorn (cap) nut din 1587 plated MAN12 $0.657/ea
M4 x .70 Acorn (Cap) Nut A2 Stainless Steel M4-.70 acorn (cap) nut a2 stainless din 1587 XMAN4 $0.090/ea
M4 x .7 Nylon Insert Lock Nut DIN 985 (5) Plated M4-0.70 nylon insert lock nut cl 8 din 985 MNLN4 $0.036/ea