10-Pack Square PTO Shaft Canopy Locking Hitch Pin, 5/16" x 4" inches - High Carbon Steel, Zinc Coating for Rust Resistance - Ideal for Farming, Gardening, Trailer Couplers

Got these to fix a flag pole and they worked great for what I needed

These hitch pins seem to be good quality. Time will tell how well they hold up with use. I’ll update if any issues. I included a few extra pictures with some dimensions for reference in your application.

Got these for a variety of uses at home. These pins are true to size, and use a quality wire for the latch. No deformity so far on the couple of pins I've put into use on my utility trailer. No concerns at this point with extended use.

As a relatively new tractor owner, I've found myself never having enough of pins of all sizes, shapes, and varieties. These compliment and round out my kit to keep the tractor in one piece with all of the bits and pieces stuck together! I don't use them with PTO, but for keeping arms, buckets, accessories, etc. pinned, they're great.I keep a medium sized tupperware bin outdoors with literally thousands of pins of different sizes in it and it has saved me a ton on random trips to the local hardware/tractor supply. These are a solid addition and have replaced some big hairpins I was using previously, I like how these have the spring retention.

First I don't review anything unless its been a min of one month and/or 5 uses depending on how its used, lets face it most things look good right out of the box you want to know how its holding up after the return window closed.Box/Bag opening and initial thoughts-bulk packaged in thin plastic wrap. Was not expecting anything special, as when you buy them in the store they usually don’t come in anything. Look like others I have the one thing I did notice is where the latch circle sits on the shaft there seems to be corrosion already-which for new makes me think these have been sitting around in a warehouse somewhere-see picture of ends.Install/Use  - I use these for some many different things, equipment, trailers, deer stand ladder, they are very handy. I used about half of these in the field for the last 6 weeks and they basically look the same. No corrosion issues.Final thoughts-I am sure you noticed I got this from Vine, because I write these awesome long reviews and take pics, as I too read reviews and use them to help me make decisions-hopefully you found my review helpful-now would I pay my hard earned side hustle, social monetization or 9 to 5er money for it-I would, really can never have to many of these it’s a handy size for larger/thick items. My review of 4 stars is meets my expectations for price paid.I will update if I encounter any problems, keep on keeping on.

What sold me on this was that it was a ten pack! If you are like me you always set these down thinking oh I know exactly where I put the pin and then before you know it, you're halfway down the road and realize you never put the pin in and it has bounced 14 miles ago. Throw the whole pack into the toolbox and just keep slapping them into the tongue. rinse and repeat.

As long as they are the right diameter, these will work great for a trailer hitch pin. I have a few uses in mind for them in addition to that. They work great if you need an adjustable pole too with a quick disconnect. I plan to use a couple on my boat to lock my outriggers in place and then be able to easily remove them and stow later on. The coating should keep them from completely rusting out too soon, but there's a bunch of them so I will have spares.

If you are looking for "D" shaped PTO style locking pins, these are a good value for the money. Most important to know is they are "PTO style" but DO NOT use them on a tractor or other machinery PTO as those require shear pins (more specific and shear off at pre-determined torque specs)...these would not likely be safe for a true PTO shear pin application.