- 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: M3x0.5mmEdge width: 8mm / 0.31"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.
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