THREAD RING GAUGES
ISO Thread Ring
TRGM001
ISO metric screw threads are the world-wide most commonly used type of general-purpose screw thread.
A wide range of GO / NO-GO fixed gauges are available for checking inside and outside threaded diameters, so as to ensure accuracy during the machining process. This ensures a “snug” fit between threaded components, which in turn phases out the loosening of screw-fastenend joints in your final work piece.
Features:
- Standard Tolerance: Ring 6G.
- Thread Tolerance class: 4、5、6、7、8.
- Thread Tolerance External Thread g、h
What Thread Ring Checks?
- A Thread Ring GO Gauge Checks The Maximum Minor Diameter And The Maximum Pitch Diameter Size In A Part.
- A Thread Ring NO-GO Gauge Checks For The Hold Not To Exceed The Minimum Pitch Diameter Size On A Part.
Supplied As:
- GO / NO-GO Ring.
UN Thread Ring
TRGUN001
UNC, UNF or UNEF if the diameter-pitch combination is from the “coarse”, “fine” or “extra fine” series, and may also be followed by a tolerance class.
Example: #6-32 UNC 2B (major diameter: 0.1380 inch, pitch: 32tpi) Unified Screw Threads – UNC, UNF and UNEF.
A wide range go GO / NO-GO fixed gauges are available for checking inside and outside threaded diameters, so as to ensure accuracy during the machining process. This ensures a “snug” fit between threaded components, which in turn phases out the loosening of screw-fastened joints in your final work piece.
Features:
What Thread Ring Checks?
- A Thread Ring GO Gauge Checks The Maximum Minor Diameter And The Maximum Pitch Diameter Size In A Part.
- A Thread Ring NO-GO gauge checks for the hole not to exceed the minimum pitch diameter size on a part.
Supplied As:
- GO / NO-GO Ring
NPT / NPTF Ring
GANPT001
National Pipe Thread Taper (NPT) is a US Standard for tapered threads used on threaded pipes and fittings. In contrast to straight threads that are found on a bolt, a taper thread will pull tight and therefore make a fluid-tight seal.
National Pipe Taper Fuel (NPTF), also called Dryseal American National Standard Taper Pipe Thread, defined by ASME B1.20.3, is designed to provide a more leak-free seal without the use of teflon tape or other sealant compound. NPTF threads are the same basic shape but with crest and root heights adjusted for an interference fit, eliminating the spiral leakage path.
Features:
- The Angle Between The Taper And The Center Axis Of The Pipe Is 1o 47′ 24” (1.7899o)
- Truncation Of Roots And Crests Are Flat.
- 60o thread angle
- Pitch Is Measured In Threads Per Inch
Note! Pipe sizes do not refer to any physical dimensions. The outside diameter of a pipe or fitting must be measured and compared to a table for size identification. A 3/4″ NPT pipe thread has an outside diameter – OD – of 1.050 inches.
Each thread size has a defied number of threads per inch – TPI, or pitch. The 3/4″ NPT pipe thread has 14 threads per inch. Both the TPI and OD of the thread are required for positive identification of thread size because more than one size have the same TPI.
NPT threads are not interchangeable with NPS – National Pipe Straight – threads.
NPT threads may look similar to ISO 7/1 threads. However, ISO and NPT threads should not be mixed. ISO threads have 55o taper angle versus 60o for NPT. The NPT root and crest configurations are also different from ISO. For ISO threads pitch is usually measured in mm (may be expressed in Inch) The pitch are different.
Special Thread Ring Gauges
TRGS001
Special thread gauges are define into Adjustable thread ring, special diameter and special pitch. Complete with end threading and without threading.
Some precision parts require double thread start or more thread start opening. All this are consider as special thread.
Features:
All thread gauges are AGD – America Gauge Designed. All thread gauges are manufactured with gauge blanks per ASME / ANSI B47.1. Progage, uses tool steel which is oil – hardened, drawn, stabilized and redrawn to Rockwell C60-62. This material provides greater wear resistance, excellent anti-friction properties and rigid stability to distortion.