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Unified Miniature Screw Thread Plug Gages

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Unified Miniature Screw Thread Plug Gages

  • Manufactured per American Standard B.110M 2004
  • Used for watches, instruments and miniature mechanisms
  • Diameter range .30mm to 1.40mm (.0118”-.0551”)
  • Free NIST certificate of accuracy



Size Pitch PD Member Item # Price
0.30 0.080 0.248mm GO UNMPG1 $283.00
0.080 0.262mm NOGO UNMPNG1 $283.00
0.080 0.248mm - 0.262mm DOUBLE END UNMPDE1 $576.00
0.35 0.090 0.292mm GO UNMPG2 $283.00
0.090 0.307mm NOGO UNMPNG2 $283.00
0.090 0.292mm - 0.307mm DOUBLE END UNMPDE2 $576.00
0.40 0.100 0.335mm GO UNMPG3 $283.00
0.100 0.351mm NOGO UNMPNG3 $283.00
0.100 0.335mm - 0.351mm DOUBLE END UNMPDE3 $576.00
0.45 0.100 0.385mm GO UNMPG4 $283.00
0.100 0.401mm NOGO UNMPNG4 $283.00
0.100 0.385mm - 0.401mm DOUBLE END UNMPDE4 $576.00
0.50 0.125 0.419mm GO UNMPG5 $283.00
0.125 0.437mm NOGO UNMPNG5 $283.00
0.125 0.419mm - 0.437mm DOUBLE END UNMPDE5 $576.00
0.55 0.125 0.469mm GO UNMPG6 $283.00
0.125 0.487mm NOGO UNMPNG6 $283.00
0.125 0.469mm - 0.487mm DOUBLE END UNMPDE6 $576.00
0.60 0.150 0.503mm GO UNMPG7 $283.00
0.150 0.523mm NOGO UNMPNG7 $283.00
0.150 0.503mm - 0.523mm DOUBLE END UNMPDE7 $576.00
0.70 0.175 0.586mm GO UNMPG8 $283.00
0.175 0.608mm NOGO UNMPNG8 $283.00
0.175 0.586mm - 0.608mm DOUBLE END UNMPDE8 $576.00
0.80 0.200 0.670mm GO UNMPG9 $283.00
0.200 0.694mm NOGO UNMPNG9 $283.00
0.200 0.670mm - 0.694mm DOUBLE END UNMPDE9 $576.00
0.90 0.225 0.754mm GO UNMPG10 $283.00
0.225 0.780mm NOGO UNMPNG10 $283.00
0.225 0.754mm - 0.780mm DOUBLE END UNMPDE10 $576.00
1.00 0.250 0.838mm GO UNMPG11 $283.00
0.250 0.866mm NOGO UNMPNG11 $283.00
0.250 0.838mm - 0.866mm DOUBLE END UNMPDE11 $576.00
1.10 0.250 0.938mm GO UNMPG12 $283.00
0.250 0.966mm NOGO UNMPNG12 $283.00
0.250 0.938mm - 0.966mm DOUBLE END UNMPDE12 $576.00
1.20 0.250 1.038mm GO UNMPG13 $283.00
0.250 1.066mm NOGO UNMPNG13 $283.00
0.250 1.038mm - 1.066mm DOUBLE END UNMPDE13 $576.00
1.40 0.300 1.205mm GO UNMPG14 $283.00
0.300 1.237mm NOGO UNMPNG14 $283.00
0.300 1.205mm - 1.237mm DOUBLE END UNMPDE14 $576.00


WESTport Gage provides a full range of Unified Miniature Screw Thread Plug Gages per the American Standard B1.10M 2004 and the equivalent ISO Recommendation. This thread designation is also referred to as the UNM Series. The threads in this series are interchangeable with the American, British, Canadian and ISO standardization programs. Unified Miniature Screw thread plug gages are intended for use in watches, instruments, and miniature mechanisms.

The series covers a diameter range from .30mm to 1.40mm (.0118” ‐ .0551”) and supplements the Unified and American thread series. WESTport also manufactures UNM forming taps. WESTport’s team of engineers can assist you with properly selecting the correct type of miniature gage and cutting tools for all of your UNM thread applications.

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