Parallel Screw Ring Gauge

Parallel screw ring gauges are manufactured from through hardened tool steel hardened and tempered to 60-64 HRC to national or international standards, or to customer specified dimensions. usually supplied  as seperate Go and Nogo gauges to check the maximum and minimum material condition of your part. A complete gauging system may require the use of plain gauges to gauge major diameters. These plain gauges can also be supplied to form a complete gauging package for screw threads. S.G.Prittie maintains an ISO 9001 certified quality system.

Applicable Standards

  • International I.S.O.
  • Australia A.S.
  • British B.S.
  • American A.N.S.I.
  • German D.I.N.
  • Japanese J.I.S.

Delivery

Many of the listed screw thread gauges, are held in stock ready for immediate delivery.

Stock Range

Thread Type Range in Stock Range Manufactured
ISO Metric 1.6 - 36.0 mm 1.0 - 260.0 mm
UNC No.1 - 12 and 1/4” - 1 1/4” No.1 - 12 and 1/4” - 10”
UNF No.1 - 12 and 1/4” - 1 1/4” No.1 - 12 and 1/4” - 10”

BSW

3/32” - 7/8” 1/8” - 10”
B.A. No.0 - 10 No.0 - 10
B.S.F. 3/16” - 1” 1/8” - 10”
PIPE - G Series 1/8” - 3” 1/8” - 6”
PIPE - R Series 1/8” - 3” 1/8” - 6”
NPT 1/16” - 4” 1/16” - 8”
NGT 3/4” - 1”

1/8” - 1 1/2”

 

NATA calibration certificates are available for all of the above gauges.

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