50pcs M1.4 M1.6 M2 M2.5 M3 304 A2 acier inoxydable noir 12.9 Grade DIN912 hexagone tête creuse vis Allen boulon L = 2-30mm

50pcs M1.4 M1.6 M2 M2.5 M3 304 A2 acier inoxydable noir 12.9 Grade DIN912 hexagone tête creuse vis Allen boulon L = 2-30mm

Aliexpress FR