These hex nuts are made from carbon steel and finished by color electro-galvanizing to produce an iridescent yellow surface. The yellow zinc plating offers improved corrosion resistance compared with black oxide and is lower cost than stainless steel fasteners. They correspond to GB/T 6170 / DIN 934 dimensions.

Available across the full range of metric sizes, they are commonly paired with hex bolts, spring washers and flat washers. Typical applications include steel structures, guardrails, machinery and furniture hardware for indoor and semi-outdoor use. Confirm required size, thread and finish when placing orders.