Speedflow now offer a small range of BSP Tapered adapters to suit the increasing variety of parts that are supplied with this thread form, Our BSPT adapters are machined with a notch in the hex to make it easier to identify between NPT & BSPT. 817-06-02-BLK 817-06-04-BLK 817-06-06-BLK 817-08-06-BLK 817-08-08-BLK 817-10-06-BLK 817-10-08-BLK 817-10-12-BLK