Stainless Steel Threaded to Tube Orifice Fittings are best for applications requiring corrosion resistance and strength.

Brass Threaded to Tube Orifice Fittings are good in applications requiring strength and are more economical than stainless. To enhance corrosion resistance a nickel flash plating might be an option.

Plastic Threaded to Tube Orifice Fittings are an economical choice for the designer.