Imperial thread nipple BSPT fitting – AGR cone nipple according the DIN used for rubber hoses and steinless steel hoses
AGR cone- male thread BSPT (Tapper thread – sealing is made on the thread it self )
Imperial male fitting BSPT thread – AGR cone according the DIN, BSP Male fitting based on the thread BSPT – British Standard Pipe (BSPT)
British Standard Pipe Tapper (BSPT) – sometimes called as Whitworth’s thread, where sealing is made on the thread it self METAL on METAL (with some extra sealing between threads)
To be more specyfic that fittings is recognized as nipple thred BSPT – according the German DIN standard it is called as AGRcone, nippel thread BSPT sometimes indicated as R eg R3/4.
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