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Parker ISO Conversion Fittings are designed to the highest quality standards to allow connections between components and systems which use both NPT and ISO Thread configurations. Conversion fittings are maintained under strict quality control programs.

NOTE:
  • Dimensions for reference only, subject to change.
  • Used to connect a female NPT and a female BSPP threaded component.
  • Bonded seal, must be used on BSPP end shown.
  • Please note the pressure ratings are based on taper threaded ends.
  • The pressure rating for the BSPP ends are dependent on the type of sealing washer used.
    • Male Hex Nipple NPT to BSPP
    Unit of Measure
    Items Male Hex Nipple NPT to BSPP
    2-2R MHN
    Male Hex Nipple NPT to BSPP     		Male Hex Nipple NPT to BSPP
    4-4R MHN
    Male Hex Nipple NPT to BSPP     		Male Hex Nipple NPT to BSPP
    6-6R MHN
    Male Hex Nipple NPT to BSPP     		Male Hex Nipple NPT to BSPP
    8-8R MHN
    Male Hex Nipple NPT to BSPP     		Male Hex Nipple NPT to BSPP
    12-12R MHN
    Male Hex Nipple NPT to BSPP
    Connection Type N/A NPT x BSPP
    NPT Thread T1 N/A 1/8-27 N/A 1/4-18 N/A 3/8-18 N/A 1/2-14 N/A 3/4-14
    BSPP Thread T2 N/A 1/8-28 N/A 1/4-19 N/A 3/8-19 N/A 1/2-14 N/A 3/4-14
    W HEX N/A 9/16 in N/A 3/4 in N/A 7/8 in N/A 1 1/16 in N/A 1 5/16 in
    D N/A 1.07 in N/A 1.44 in N/A 1.47 in N/A 1.78 in N/A 1.95 in
    R1 N/A .38 in N/A .56 in N/A .56 in N/A .75 in N/A .75 in
    R2 N/A .28 in N/A .44 in N/A .44 in N/A .56 in N/A .63 in
    Working Pressures (Brass) N/A 5000 psi340 bar N/A 4000 psi280 bar N/A 3900 psi270 bar N/A 3800 psi260 bar N/A 3600 psi250 bar
    Working Pressures (Stainless Steel) N/A 9100 psi630 bar N/A 7500 psi520 bar N/A 7200 psi500 bar N/A 6600 psi460 bar N/A 6400 psi440 bar