Malone Specialty Inc. offers Carbon Steel Male British Parallel to Male Metric Hex Nipples, as well as 316 Stainless Steel Male British Parallel to Male Metric Hex Nipples, in various sizes. This adapter conforms with the ISO 228-1, and the BS 5200 specifications. This item features a 60° cone seat on the British side, along with a straight thread, or G thread, for both sides. This coupling also offers a centering feature for a bonded seal, or a copper seal for each side as well.