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  • Extremely easy to install - no tools necessary
  • Certified by the National Sanitation Foundation (NSF-51 and NSF-61) NSF listed as trade designation "JG".
  • Instant leak-proof connections
  • Made from tough, lightweight, FDA-sanctioned materials
  • No flow restrictions
  • Easy to disconnect and reuse
  • Available in either Fractional or Metric sizes
  • Optional collet cover to prevent accidental disconnection and to deter tampering - available in colors for coding purposes
  • Genuine John Guest brand fittings
Newloc® Acetal Plastic Push-To-Connect Fittings
Newloc® Acetal Fraction Plastic Push-To-Connect Male Stem Adapter Fittings
Unit of Measure
1 

Item #

Item Name

Tubing Stem Outer Diameter (OD)

British Standard Pipe Thread (BSPT) Size

Connection Type

Construction Body Materials

521 0023 N/A Newloc® 1/8 Millimeter (mm) British Standard Pipe Thread (BSPT) Size Plastic Push-To-Connect Male Stem Adapter Fitting N/A 4 mm N/A 1/8 mm N/A Male National Pipe Thread (MNPT) N/A Acetal Copolymer (Black)
521 0051 N/A Newloc® 1/4 Millimeter (mm) British Standard Pipe Thread (BSPT) Size Plastic Push-To-Connect Male Stem Adapter Fitting N/A 4 mm N/A 1/4 mm N/A Male National Pipe Thread (MNPT) N/A Acetal Copolymer (Black)
521 0163 N/A Newloc® 1/4 Millimeter (mm) British Standard Pipe Thread (BSPT) Size Plastic Push-To-Connect Male Stem Adapter Fitting N/A 6 mm N/A 1/4 mm N/A Male National Pipe Thread (MNPT) N/A Acetal Copolymer (Black)
521 0191 N/A Newloc® 1/8 Millimeter (mm) British Standard Pipe Thread (BSPT) Size Plastic Push-To-Connect Male Stem Adapter Fitting N/A 8 mm N/A 1/8 mm N/A Male National Pipe Thread (MNPT) N/A Acetal Copolymer (Black)
521 0219 N/A Newloc® 1/4 Millimeter (mm) British Standard Pipe Thread (BSPT) Size Plastic Push-To-Connect Male Stem Adapter Fitting N/A 8 mm N/A 1/4 mm N/A Male National Pipe Thread (MNPT) N/A Acetal Copolymer (Black)
521 0275 N/A Newloc® 1/4 Millimeter (mm) British Standard Pipe Thread (BSPT) Size Plastic Push-To-Connect Male Stem Adapter Fitting N/A 10 mm N/A 1/4 mm N/A Male National Pipe Thread (MNPT) N/A Acetal Copolymer (Black)
521 0303 N/A Newloc® 3/8 Millimeter (mm) British Standard Pipe Thread (BSPT) Size Plastic Push-To-Connect Male Stem Adapter Fitting N/A 10 mm N/A 3/8 mm N/A Male National Pipe Thread (MNPT) N/A Acetal Copolymer (Black)
521 0331 N/A Newloc® 1/2 Millimeter (mm) British Standard Pipe Thread (BSPT) Size Plastic Push-To-Connect Male Stem Adapter Fitting N/A 10 mm N/A 1/2 mm N/A Male National Pipe Thread (MNPT) N/A Acetal Copolymer (Black)
521 0359 N/A Newloc® 3/8 Millimeter (mm) British Standard Pipe Thread (BSPT) Size Plastic Push-To-Connect Male Stem Adapter Fitting N/A 12 mm N/A 3/8 mm N/A Male National Pipe Thread (MNPT) N/A Acetal Copolymer (Black)
521 0387 N/A Newloc® 1/2 Millimeter (mm) British Standard Pipe Thread (BSPT) Size Plastic Push-To-Connect Male Stem Adapter Fitting N/A 12 mm N/A 1/2 mm N/A Male National Pipe Thread (MNPT) N/A Acetal Copolymer (Black)
Unit of Measure
1