Tornillo cilíndrico con collarín; M6x16 BN 1392, A3B, DIN 908 12.1

Cylindrical screw with collar M6x16 according to standard BN 1392, A3B, DIN 908 12.1 — a fastener used in assembly and repair of boiler and burner equipment. The collar provides an additional bearing surface, preventing material indentation. The screw is used for fixing parts requiring precise positioning and reliable connection. Made of durable steel, suitable for repeated use. Recommended for replacing worn or lost fasteners during maintenance.