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Posted on December 12, 2019

International Thread Types: Japanese Threads

Japanese Threads

As a leading Japanese equipment manufacturer, all of Komatsu® Limited’s equipment uses Japanese couplings with a 30° seat and metric fine threads.  Most other Japanese heavy equipment manufacturers use fittings with a 30° seat and BSPP (British Standard Pipe Parallel) threads.  This combination is referred to as JIS (Japanese Industrial Standard).  However, they are not interchangeable with standard British couplings because JIC fittings do not have an inverted flare.

Posted on December 04, 2019

International Thread Types: German Threads

German Threads

German DIN (Deutsche Industrial Norme) style is the most common metric fittings used globally.  When a fitting is referred to as metric, more often than not is a DIN connection.  DIN Metric and BSPP (British Standard Parallel Pipe) are the most common thread styles in Europe.  DIN 2353 24° fittings are most commonly used in the industrial, oil & gas and construction equipment in hydraulic and pneumatic applications; as with BSP standards DIN flanges are SAE Code 61 or Code 62.

Posted on November 20, 2019

International Thread Types: British Threads

British Threads

BSP is the abbreviation for British Standard Pipe. There are two distinct types; BSPP (British Standard Pipe Parallel) and BSPT (British Standard Pipe Tapered).  These are historically known as Whitworth threads, devised and specified by Joseph Whitworth in 1841, and are still the British standard today. Though commonly confused with NPT fittings, most sizes actually have a different thread pitch, and the O.D.'s and thread form are close, but not the same. 

Posted on September 20, 2017

What You Should Know About ISO Connections & Instrumentation Fittings

ISO connections and instrumentation fittings are two common connections found in fluid power systems. This post is an excerpt from our new Thread ID & Measurement Guide.

ISO Connections

ISO/DIS 6162 4-Bolt Flange* is another common connection found in fluid powersystems. There are two pressure ratings for this connection; Code 61: PN 35/350bar which is considered the standard series Code 62: PN 415 bar which is the highpressure series.

Posted on September 12, 2017

Connection Types: British, German & Japanese Fittings

There are many different fitting connection types all across the world, this post will help you identify and define UK, German and Japanese connections! This post is an excerpt from our new Thread ID & Measurement Guide.

British Connections

British Standard Pipe (BSP) and BSPT (tapered) connections are comparable to NPT fittings, except most sizes have a different thread pitch, plus the O.D.’s and thread form are close, but not the same. Sealing takes place by distortion of the threads. Because of this, thread sealants are recommended when securing these connections.

Posted on September 05, 2017

Connection Types: American Connections

There are many different connection types all across the world, this post will help you identify and define the common fluid connection types that are found in the US! This post is an excerpt from our new Thread ID & Measurement Guide.

Posted on August 23, 2017

How To: Measure Threads in Three Steps

The precise identification of fluid line connectors is critical before selecting and installing the correct fittings. This post, an excerpt from our new Thread ID & Measurement Guide, will cover some of the most common hydraulic fluid transfer, piping and instrumentation systems and how to measure them in the field.