# Cable Gland Thread Differences - PG vs NPT vs Metric **URL:** \ **Category:** Interconnect\ **Tags:** harting, associated-products, terminology\ **Created:** [October 25, 2019, 6:57pm UTC](https://forum.digikey.com/t/cable-gland-thread-differences-pg-vs-npt-vs-metric/4688 "2019-10-25T18:57:39Z")\ **Posts on this page:** 1\ **Showing post:** 1
**Author:** ![Paul\_Burmeister](https://avatars.discourse-cdn.com/v4/letter/p/e480ec/32.png) [@Paul\_Burmeister](https://forum.digikey.com/u/Paul_Burmeister)\ **Post date:** [October 25, 2019, 6:57pm UTC](https://forum.digikey.com/t/cable-gland-thread-differences-pg-vs-npt-vs-metric/4688/1 "2019-10-25T18:57:39Z")
I was looking for a Cable Gland for the Harting Hood [1195-3469-ND](https://www.digikey.com/product-detail/en/harting/09300240441/1195-3469-ND/3974546). This states a Thread Size of PG29. These are the [Cable Gland options to use](https://www.digikey.com/products/en/cables-wires-management/cable-and-cord-grips/492?k=cable+gland&k=&pkeyword=cable+gland&sv=0&pv1989=0&sf=0&FV=-8%7C492%2C121%7C385823&quantity=&ColumnSort=0&page=1&stock=1&pageSize=25). What does this size PG29 call out? The **PG** stands for Panzer-Gewinde . This is a German type thread. The Main difference on this vs NPT and Metric is that the depth of the thread is smaller but has a larger flank angle, which makes it have a wider pitch along with a straight thread. **PG Thread** ![image](https://global.discourse-cdn.com/digikey/original/2X/2/2ba52dbd5694a8c582b06a7715889506682e9eed.png) > **PG Gland Sizes** > > ![image](https://global.discourse-cdn.com/digikey/original/2X/f/fa9b28d722f73c79115ff4d5c747e6aebf179b35.png) **NPT Thread** = National Pipe Thread These will have a 1/16 taper to the threads. This allows the flanks of the threads to seal together when torqued. these are set up as ![image](https://global.discourse-cdn.com/digikey/original/2X/6/6fd7a3861cad497110d153dbc7ec8af9a604e228.png) > **NPT Sizes** > > ![image](https://global.discourse-cdn.com/digikey/original/2X/4/45c2b5fa2e07d4c75ce66bcafb506d9f77f0767f.png) **Metric Thread** These have a straight Thread but are set up as: example M12 x 1.5 M = Metric 12 = diameter in mm 1.5 = pitch in mm ![image](https://global.discourse-cdn.com/digikey/original/2X/3/33a632b37001266bd9d18863fbdbfdf29387726e.png) > **Metric Sizes** > > ![image](https://global.discourse-cdn.com/digikey/original/2X/4/4c292cbc19b78502147cb278e32ff24cfdf4b812.png) For additional Cable Gland information: > [@Cable Gland - Function and Key Parameters](https://forum.digikey.com/t/cable-gland-function-and-key-parameters/862): > > [Cable Glands](https://www.digikey.com/products/en/cables-wires-management/cable-and-cord-grips/492?k=&pkeyword=&pv183=3784&pv183=7995&pv183=7749&pv183=7751&FV=ffe001ec&mnonly=0&ColumnSort=0&page=1&quantity=0&ptm=0&fid=0&pageSize=25) (sometimes called cable connectors) are a type of device designed to attach and secure the end of a cable to your equipment. They’re a great solution for cable strain relief, sealing enclosures, and aiding in protection against dust and water in an industrial application. [cable gland] Beyond Cable Diameter, Thread Dimension, Conduit Hub Size and Panel Hole Size, which are the basic specifications for a cable gland, there are other key parameters to consider when selecting a suita… --- _[View the full topic](https://forum.digikey.com/t/cable-gland-thread-differences-pg-vs-npt-vs-metric/4688)._