Just to reassure anyone reading this thread about the kioti zerk thread size, chuck172 is right. But I'd like to elaborate a bit. The thread size is 1/8 28 BSPT (British Standard Pipe Thread), A confusion we may run into here is the lack of labeling from manufacturers. They don't always include the "T" in BSPT. The tap, die, or zerk will sometimes just be labeled BSP. Now, BSPT is a tapered thread, like most pipe threads are. Very very similar in size to NPT, but not quite, which is where much of the confusion originates from.
All would be fine if there were only one type of BSP thread. But alas, such is not the case. There is also a BSPP (British Standard Pipe Parallel), that is also sometimes just labelled BSP. This thread is straight, and will not quite fit our application. It is too wide at the beginning of the thread to get it easily started.
Further confusion is added when providers call the thread "BSP straight" which implies BSPP, But sometimes shows up to my shop as BSPT, and other times it shows up as BSPP :confused3:. More confusion still, BSPT male will actually fit into BSPP female, albeit slightly sloppy start of thread. But BSPP will not fit into BSPT.
All of that said, at the end of the day, what we need is 1/8 - 28 BSPT. You can find them on Ebay and a few other places online, but, don't always trust their labeling. Zerks are cheap, though, so order a few kinds if you are unsure.
This thread size is true for my 2014 Kioti DK45HSE, the KL401 loader and the KB2485 backhoe. anyway.
