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Screw Plug Gauge - ISO Metric Fine Pitch

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ISO Metric Fine Pitch Screw Plug Gauge

The ISO Metric Fine Pitch Screw Plug Gauge is a high-precision thread inspection gauge des igned for checking the accuracy of internal ISO metric coarse threads. Manufactured in accordance with ISO 1502, these screw plug gauges provide reliable GO and NO GO thread inspection for quality control, machining, production, and engineering applications.

TTG Metric Screw Plug Gauges are manufactured to Class 6H as standard (except M1, M1.1 and M1.2, which are supplied in Class 5H) and are suitable for inspecting right-hand internal metric threads. These gauges help ensure thread conformity, improve production consistency, and reduce costly manufacturing errors.

Features

  • Manufactured according to ISO 1502 standards
  • Standard tolerance Class 6H (M1, M1.1 & M1.2 supplied as Class 5H)
  • Available in GO & NO GO configurations
  • Right-hand thread gauges as standard
  • High accuracy and excellent wear resistance
  • Designed for precision inspection of internal metric coarse threads
  • Suitable for production, quality assurance, calibration, and machine shops

Custom Thread Gauges Available

In addition to standard ISO metric coarse pitch gauges, TTG also manufactures custom thread gauges to meet specific application requirements, including:

  • Class 5H, 7H, 6G and other tolerance classes
  • Non-standard thread sizes
  • Special pitch and diameter combinations
  • Pre-plating thread gauges
  • Custom thread gauges manufactured to customer drawings
  • Special inspection gauges for unique industrial applications

Available Sizes

A comprehensive range of ISO Metric Coarse Pitch sizes is available, including:

 
ISO METRIC FINE PITCH
SIZES SCREW PLUG
GO & NOT GO GO or NOT GO GO & NOT GO
D/E (Style E) S/E* D/E (EZH Handle)
ORDER NO. ORDER NO. ORDER NO.
 M1 x 0.2 *  TFM1P0.2  TFM1P0.2-  ---
 M1.1 x 0.2 *  TFM1.1P0.2  TFM1.1P0.2-  ---
 M1.2 x 0.2 *  TFM1.2P0.2  TFM1.2P0.2-  ---
 M1.4 x 0.2 *  TFM1.4P0.2  TFM1.4P0.2-  TFM1.4P0.2-EZH
 M1.6 x 0.2 *  TFM1.6P0.2  TFM1.6P0.2-  TFM1.6P0.2-EZH
 M1.8 x 0.2 *  TFM1.8P0.2  TFM1.8P0.2-  TFM1.8P0.2-EZH
 M2 x 0.25 *  TFM2P0.25  TFM2P0.25-  TFM2P0.25-EZH
 M2.2 x 0.25 *  TFM2.2P0.25  TFM2.2P0.25-  TFM2.2P0.25-EZH
 M2.5 x 0.35  TFM2.5P0.35  TFM2.5P0.35-  TFM2.5P0.35-EZH
 M3 x 0.35  TFM3P0.35  TFM3P0.35-  TFM3P0.35-EZH
 M3.5 x 0.35  TFM3.5P0.35  TFM3.5P0.35-  TFM3.5P0.35-EZH
 M4 x 0.5  TFM4P0.5  TFM4P0.5-  TFM4P0.5-EZH
 M4.5 x 0.5  TFM4.5P0.5  TFM4.5P0.5-  TFM4.5P0.5-EZH
 M5 x 0.5  TFM5P0.5  TFM5P0.5-  TFM5P0.5-EZH
 M5.5 x 0.5  TFM5.5P0.5  TFM5.5P0.5-  TFM5.5P0.5-EZH
 M6 x 0.75  TFM6P0.75  TFM6P0.75-  TFM6P0.75-EZH
 M7 x 0.75  TFM7P0.75  TFM7P0.75-  TFM7P0.75-EZH
 M8 x 0.75  TFM8P0.75  TFM8P0.75-  TFM8P0.75-EZH
 M8 x 1  TFM8P1  TFM8P1-  TFM8P1-EZH
 M9 x 0.75  TFM9P0.75  TFM9P0.75-  TFM9P0.75-EZH
 M9 x 1  TFM9P1  TFM9P1-  TFM9P1-EZH
 M10 x 0.75  TFM10P0.75  TFM10P0.75-  TFM10P0.75-EZH
 M10 x 1  TFM10P1  TFM10P1-  TFM10P1-EZH
 M10 x 1.25  TFM10P1.25  TFM10P1.25-  TFM10P1.25-EZH
 M11 x 0.75  TFM11P0.75  TFM11P0.75-  TFM11P0.75-EZH
 M11 x 1  TFM11P1  TFM11P1-  TFM11P1-EZH
 M12 x 1  TFM12P1  TFM12P1-  TFM12P1-EZH
 M12 x 1.25  TFM12P1.25  TFM12P1.25-  TFM12P1.25-EZH
 M12 x 1.5  TFM12P1.5  TFM12P1.5-  TFM12P1.5-EZH
 M14 x 1  TFM14P1  TFM14P1-  TFM14P1-EZH
 M14 x 1.25  TFM14P1.25  TFM14P1.25-  TFM14P1.25-EZH
 M14 x 1.5  TFM14P1.5  TFM14P1.5-  TFM14P1.5-EZH
 M15 x 1  TFM15P1  TFM15P1-  ---
 M15 x 1.5  TFM15P1.5  TFM15P1.5-  ---
 M16 x 1  TFM16P1  TFM16P1-  ---
 M16 x 1.5  TFM16P1.5  TFM16P1.5-  ---
 M17 x 1  TFM17P1  TFM17P1-  ---
 M17 x 1.5  TFM17P1.5  TFM17P1.5-  ---
 M18 x 1  TFM18P1  TFM18P1-  ---
 M18 x 1.5  TFM18P1.5  TFM18P1.5-  ---
 M18 x 2  TFM18P2  TFM18P2-  ---
 M20 x 1  TFM20P1  TFM20P1-  ---
 M20 x 1.5  TFM20P1.5  TFM20P1.5-  ---
 M20 x 2  TFM20P2  TFM20P2-  ---
 M22 x 1  TFM22P1  TFM22P1-  ---
 M22 x 1.5  TFM22P1.5  TFM22P1.5  ---
 M22 x 2  TFM22P2  TFM22P2-  ---
 M24 x 1  TFM24P1  TFM24P1-  ---
 M24 x 1.5  TFM24P1.5  TFM24P1.5-  ---
 M24 x 2  TFM24P2  TFM24P2-  ---
 M25 x 1  TFM25P1  TFM25P1-  ---
 M25 x 1.5  TFM25P1.5  TFM25P1.5-  ---
 M25 x 2  TFM25P2  TFM25P2-  ---
 M26 x 1.5  TFM26P1.5  TFM26P1.5-  ---
 M27 x 1  TFM27P1  TFM27P1-  ---
 M27 x 1.5  TFM27P1.5  TFM27P1.5-  ---
 M27 x 2  TFM27P2  TFM27P2-  ---
 M28 x 1  TFM28P1  TFM28P1-  ---
 M28 x 1.5  TFM28P1.5  TFM28P1.5-  ---
 M28 x 2  TFM28P2  TFM28P2-  ---
 M30 x 1  TFM30P1  TFM30P1-  ---
 M30 x 1.5  TFM30P1.5  TFM30P1.5-  ---
 M30 x 2  TFM30P2  TFM30P2-  ---
 M30 x 3  TFM30P3  TFM30P3-  ---
 M32 x 1.5  TFM32P1.5  TFM32P1.5-  ---
 M32 x 2  TFM32P2  TFM32P2-  ---
 M33 x 1.5  TFM33P1.5  TFM33P1.5-  ---
 M33 x 2  TFM33P2  TFM33P2-  ---
 M33 x 3  TFM33P3  TFM33P3-  ---
 M35 x 1.5  TFM35P1.5  TFM35P1.5-  ---
 M36 x 1.5  TFM36P1.5  TFM36P1.5-  ---
 M36 x 2  TFM36P2  TFM36P2-  ---
 M36 x 3  TFM36P3  TFM36P3-  ---
 M38 x 1.5  TFM38P1.5  TFM38P1.5-  ---
 M39 x 1.5  TFM39P1.5  TFM39P1.5-  ---
 M39 x 2  TFM39P2  TFM39P2-  ---
 M39 x 3  TFM39P3  TFM39P3-  ---
 M40 x 1.5  TFM40P1.5  TFM40P1.5-  ---
 M40 x 2  TFM40P2  TFM40P2-  ---
 M40 x 3  TFM40P3  TFM40P3-  ---
 M42 x 1.5  TFM42P1.5  TFM42P1.5-  ---
 M42 x 2  TFM42P2  TFM42P2-  ---
 M42 x 3  TFM42P3  TFM42P3-  ---
 M42 x 4  TFM42P4  TFM42P4-  ---
• For single end, please specify G (Go) or NG (Not Go)      
• * plug gauge to 5H            

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