Polished Slotted Round Nuts

We make our polished slotted round nuts from materials that meet the required standards—like the ones that follow DIN 546 or GB/T 817-1988. These standards let you pick different materials based on what the nuts need, such as how strong they have to be or how well they need to keep rust away. Usually, people go for carbon steel for general use, while stainless steel or alloy steel is chosen when the application needs more strength or better rust protection. For special industries like aerospace, specific standards say you have to use materials such as corrosion-resistant steel, alloy steel, or heat-resistant steel. These materials are usually given surface treatments too, like passivation or cadmium plating. The exact material grades we use and any surface treatments that are needed are decided by the product’s specs and classification.

We put polished slotted round nuts through different surface treatments to make them more durable and improve how they perform. Common ways to treat them are electroplating and hot-dip galvanizing—these two methods offer different levels of corrosion resistance and different looks. You can also use more advanced dry processes, like tubular sputtering, to put a uniform metal coating (such as gold) on even the tricky parts like the threads, no matter how complex the shape is. For aerospace uses, standards might say you have to use passivation treatment on heat-resistant steel nuts. We also have other treatment options like blackening, chemical nickel plating, and trivalent chromium plating—these are for meeting specific environmental or functional needs.

Q: What international standards do your Polished Slotted Round Nuts comply with?

A:Our Nuts are manufactured to meet major international standards such as ISO 7714 and DIN 935. This ensures the Nuts you receive have consistent dimensions, thread pitch, and slot specifications for reliable interchangeability.