Screw Plug Gauge

S.G. Prittie screw plug and screw ring gauges are manufactured to precise requirements from high quality tool steel, heat treated and stabilised for high performance. Gauge specifications are derived from national or international standards or from customer specified dimensions. S.G. Prittie maintains an ISO 9001 certified quality system.

Parallel Thread Forms

Screw plug gauges are generally supplied with Go and NoGo members to check maximum and minimum material conditions. Screw ring gauges are also available, usually supplied as individual Go and NoGo gauges. Most combinations of pitch and thread form can be manufactured as required.

Tapered Thread Forms

Tapered screw thread gauges are generally supplied with limit steps to indicate maximum and minimum material conditions.

Gauges Available for Immediate Delivery

A large range of screw plug and ring gauges are held in stock and are available for immediate delivery.

Special Thread Gauges

Special gauges with unique thread forms or non standard pitch/diameter combinations can often be manufactured from stock hardened steel blanks and delivered promptly.

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.

Specifications

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”

 

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