uxcell Square Nuts, M4x7mmx2mm Yellow Zinc Plated Metric Coarse Thread Assortment Kit, 100 Pcs

- Made of carbon steel, yellow zinc plated finished, corrosion-resistant and durable to use.- Square head, female threaded inside.- Widely used with fasteners for industrial machine,- Allow your works to accomplish work faster and more efficient. Specification:Material: Carbon SteelFinish: Yellow zinc platedThread Size: M4x0.7mmEdge width: 7mm / 0.28"Height: 2mm / 0.08" Package Content: 100(+/-2%) x Square Nuts Notice for Choosing the Stainless Steel Type? The stainless steel is not absolutely rustless. It is just rust-proof in the proper condition.* For the indoor decoration or furniture, stainless steel 201 or 304 (SUS201, SUS 304) can be used. But Type 201 should only be kept in the dry condition.* For the outdoor condition with the polluted air, in the extremely humid environment, or somewhere with salty vapor, such as by sea or swimming pool, Type 316 or 316L should apply.* To bear the big load, the carbon steel is a good choice. Its finish can be Zinc plating or paint coating, varying in the environmental conditions.