NicholsonThread Restoring Hand File, Number 8, Metric Bolt, Thread Teeth, 8-3/8" Length (Pack of 1) (33016)

I used this before at my last job and loved having this around, switched jobs and they didn't have one so I got me this and it's been a life saver, for those that know how to use it properly. Don't forget to get a good thread pitch gauge. You won't use it all the time but it'll come in handy when you need it.

Nicholson, what happened? You were THE file company! This thread restorer is a FILE, thus I expected perfection. But I received junk... Most of the high star ratings and previous experience with Nicholson convinced me to buy this restorer over other brands. A big mistake. I purchased a Gearwrench brand thread file in inch pitch at the same time as this metric Nicholson file and there’s a night/day difference in the quality of the cutting teeth. The cutting edges of the Nicholson restorer are dull, no bite at all whereas the Gearwrench file is keen enough to shave the back of my fingernails. That’s a good show of cutting ability. The profile shape of the Nicholson teeth seems inconsistent, as maybe the cutters used to give the longitudinal shape to the teeth have worn out. This Nicholson thread restorer is going back and I already have its equivalent Gearwrench tool in my shopping basket.

File works excellent, and the price was right. I would have given five stars if it came with a handle grip or a better package to protect it while not in use.

Once again I proved to myself that having the right tool makes the job much easier. After struggling to correct damaged threads on an automotive O2 sensor, I broke down and ordered the subject metric hand file to get the job done right. Voila, a few minutes of working the threads with the file made life a whole lot better...sensor screwed in without any more fuss. Product quality looks good, so I expect the file to outlast me.

Worked perfectly to clean up the mess I made cutting a stuck nut off a ball joint stud. Cleaned the threads right up and the new nut spun on with no issue at all. Great product, and covers pretty much all the common metric sizes so its really handy to have in the garage in a pinch.

My first use for this file was on an atv axle that had stripped the threads on the end from a wheel working its way off. With this tool, the threads were good as new in about 2 minutes of filing. Definitely worth having in your toolbox.

I had some damaged threads on a large axle shaft. At first I contemplated buying an expensive die to clean up the threads, but I bought the thread file instead. Boy am I glad that I did... the file did a great job cleaning up the threads, and I can use the file on various sized bolts and thread sizes. I'm glad that I have this handy item in my toolbox.

I needed this for smashed barrel threads. Fixed the threads fine, but the 1mm thread file had a few of the teeth on one side broken off. Didn't really make a difference, but it wasn't perfectly made. Still, works good!

very good product