Male threads project on the outside of the fitting while female threads are found on the inside of the fitting. Use this handy chart to determine the an fitting size based on corresponding thread sizes.
Four Easy Steps To Identify Hydraulic Threads Parker Hannifin
An fitting thread pitch. Each an size number has its own standard thread size which can be seen in column three of the chart. Male threads are inserted into female threads. For some odd reason the automotive industry wants to make an fittings sound like something special. The thread pitch on these metric sizes are also quite close to the thread pitch of some sae sizes 10mm 254 tpi 125mm 203 tpi 15mm 169 tpi 2mm 127 tpi. Pitch identification is reliant on the specific thread standard such as npt iso bspt etc. Male and female threads refer to the placement of the threads on your fitting.
Record the values and compare your measurements with the figures provided in this guide. In the case of metric connections measure the thread to thread distances. These are the same thread sizes that have been used in aircraft and industrial applications for many years. To get an accurate value ensure that the thread pitch gauge is fitting well on the threads. Pitch refers to the distance between the threads. The pit stop usa difference were the experts we help you find a way to win.
Note that 37 an and 45 sae fittings and tooling are not interchangeable due to the different flaring angles. Fitting thread size chart the following chart is intended as a quick reference guide for thread size by dash size. Thread size chart for an fittings. Sae j518 code 61 and code 62 4 bolt flanges. After measuring the diameter of your threads determine their spacing in threads per inch. Typical layout for expansion joints.
Each an size number has its own standard thread size see column three of the chart. Click above to shop all fittings or try our search function in the top right corner. Npt threads are tapered to create an interference fit and often use thread tape or thread sealant to form a liquid tight seal without the use of crush washers o rings or gaskets. Pitch can be expressed in both threads per inch as well as in millimeters. The chart to the right will clarify this point. Youll typically see metric fastenersfittings described as something like m16 x 15 in which m16 refers to the diameter of the fastener and the 15 refers to the thread pitch.
You must measure carefully to be sure. Huge selection over 100000 products from the top performance brands. The sizing chart is in reference to the inside diameter of a schedule 40 black iron pipe. Mixing them can cause leakage at the flare. For example an6 bolt has a 38 24 thread whereas an an6 fitting has a 916 18 thread. Again these are the same thread sizes that have been used in aircraft and industrial applications for many years.
Npt fitting sizing does not refer to the physical dimension of the threads.
Gallery of An Fitting Thread Pitch
