Thursday, March 23, 2023


JIS hydraulic fittings

February 3, 20230

What is JIS hydraulic fitting?

JIS is part of the Japanese industry standard specification grade. These JIS hydraulic fittings have a 37 degree flare tube connector. They are used as hose adapters in different equipment specifications. It is designed in BSPP, BSPT, and UNF thread types. They play an important role to influence and characterize the flow of media in the system. It helps in the creation of strong leakproof sealing and maintains different types of pressure conditions. They are designed to have a male and female connector that is used to interlock with each other. It is designed in the form of elbows, tees, straight, coupling fittings, etc. The grade can be easily welded or threaded, making use of standard processes. It is a common feature in hydraulic cylinders, pipes, tubes, hoses, etc. They are available in a range of sizes and shapes that can be customized as per project requirements.

JIS hydraulic fittings

What is the difference between JIC and JIS fittings?

JIC and JIS have specifications having an internal and external tapered design. Both of them cannot be used interchangeably as they are used for two separate tubing connection systems. The JIC fittings cover the standard as per Joint Industry Council. It is defined by SAE J514 and MIL-DTIL-18866 standards. It has a 37 degrees flare having secure metal sealing. They are found with UN and UNF thread specifications. It is normally used in the United States market. A JIS type fitting is part of the Japanese Industry Standard, and it is defined with the JIS B8363 specification. It has a 30 degrees flare to form a strong and has a metal or o-ring sealing. They are found with PF and G thread specifications.

nptf hydraulic fittings vs npsm hydraulic fittings

The nptf and npsm are two types of hydraulic fitting thread types. An NPTF is known as National Pipe Thread Fuel which has a tapered thread to mate with its female thread. It usually acts as a port and seal when special threads are crushed together. They have a thread angle of 60 degrees and create a strong joint to seal off leakage.

NPSM stands for National Pipe Straight Mechanical thread which is often found in several fluid power systems. Here, the female NPSM Brass Hydraulic Fittings incorporates a straight thread having a 30 degrees inverted seat. The male component has 30 degrees of the internal chamfer. A seal is made by compression on the chamfer and is considered a mechanical joint. If an NPTF male is properly chamfered, it will seal with the NPSM female connection type.

Ttop 5 points you should remember when buying hydraulic fittings from India or China

China and India are the two tycoons of supplying hydraulic fittings in the industry. Both have a few differences from their manufacturing to their transportation, listed below:

  • Production- The Chinese have their own setup that allows them to design and manufacture products easily. However, they are producing more than they require, so they are forced to dump it in the market at cheap prices. Further, in the hassle of eliminating its competition, they don’t pay any attention to the quality of the products. The subcontinental region doesn’t have the same level of production capacity. But they follow all standards to produce the best items in the market today.
  • Quality- Indian steel is considered to be one of the most desired due to its rich quality and performance. This is due to the fact they acquire the best raw materials and ensure they manufacture the fittings following industry standards. They also ensure that the modules are checked once they are produced. This will allow them to make it compatible with different environments around the world. They give users access to all reports to check their authenticity. Their neighbors don’t follow most of the standards and ship low quality cheap products in the market.
  • Corrosion and oxidation resistance- The tolerance to corrosive and oxidative media is nearly the same. However, the Indians have a slight edge which makes them less likely to corrode compared to the latter.
  • Price- The steel produced in the region of China is cheap but doesn’t guarantee performance and long service. This is a stark difference from their neighbors, whose products are slightly more pricier. However, its quality far exceeds its price in the industry.
  • Transport- The transportation facilities in the subcontinent are one of the best. You can get your products by air, water as well as roadways. All this is not the same as their counterparts.