A straight adapter with an AN 37-degree male flare at one end and a BSP parallel male thread at the other, used to bring braided AN hose onto BSP-tapped components. BSP is a 55-degree thread form and a separate standard to NPT, so the two must not be interchanged even where they appear to start by hand. A parallel BSP thread does not wedge itself tight the way a tapered pipe thread does; it seals at the shoulder against a bonded washer or O-ring, so sealant on the threads is neither needed nor effective. Check the exact port size on your component before ordering, as this listing carries no published size figures.