Customer Reviews

Master Lock 375DAT Class III/IV Snap-On Receiver Hitch Lock with 5/8-Inch Pin

5 star:		(9)
4 star:		(3)
3 star:		(2)
2 star:		(3)
1 star:		(8)

 

 

After spending more than I care to mention on a bike rack and a hitch-mounted storage rack I felt I needed to protect them with a hitch lock. The Master Lock 375DAT is for a 2" receiver and replaces a 5/8" pin. I looked at a few bike and hardware stores and found it to be competitively priced on Amazon. It also appeared to be of better quality and lower price than some others I found at a hitch store as well. In assessing the lock I wanted to see how well it performed in three apsects: 1) Fit and ease of putting through the hitch pin opening 2) Ease of locking and opening with hitch attachments on; and 3) Did it make any noise or rattle.

Overall I was more than pleased with the lock. 1) With regard to placement I was pleasantly surprised to find that it slid through my slightly rusty receiver hitch better than any of my existing pins. I think this was because it is a better quality SST than my other pins. I also found the locking mechanism to be easier to lock in place than the conventional pin. Since the locking head is symmetrical I did not have to worry about getting the hole lined up just perfect to insert a cotter pin (also minimized knuckle scraps). 2) It was also easier to mount my storage rack attachment since you approach the lock from the side rather than having to address the cotter pin through the attachment. I had also intended to use with my bike rack which is held in place with a bolt. I forgot the bolt is held in place with a nut welded to the inside of the receiver tube so the lock is unable to go through. Not the fault of the lock, just disappointing that I either have to keep using the bolt or somehow remove to enable the lock to pass through. 3) I was a little concerned that there was some play in the lock and that it might create some noise. The play I noticed helps engage the key in the lock and does not appear to be a problem.

My only complaint is that I wish Amazon carried a version for my other car that has a 1 1/4" receiver which needs a 1/2" pin!

Real nice product. I like the heavy rubber end that covers the lock. Sometimes on these locking bolts, they don't offer a seal on the lock and over time the lock rusts and is hard to work with. Being at the back of the truck, it's going to continue to be wet and the seal should keep the lock from not functioning as it should.

After only 4 months, the lock part is rusted on the pin and I can't get it off. Also the key barely fit in the hole, even with the rubber piece protecting it from dirt and grime. The key is now stuck in the lock. Not that it matters, because I have to get the pin cut off anyways. I'd avoid this product.

I bought this back in July 2008. I went to take it off in Aug 2009 and it was so corroded and rusted the lock was frozen in place. I had to have it cut off at a welding shop. I would avoid this lock!

The product fits the hitch just fine and has an excellent price point, unfortunately it rusts extremely quickly. In less than 3 weeks it was all spotty. After 3 months it is almost completely covered in rust, the worst part being that despite the rubber cap, the lock is rusted shut. We will have to cut off the lock and buy a better product, or cover the new one in some rust proofer.

Easy to install and safely secures my bike rack the receiver hitch. Dust cover keeps debris out of the key slot. (Useful feature).

Worked as it was supposed to but after the first winter, I guess salt somehow got past the cover and I couldnt get it unlocked, will not buy another one of these as long as I live somewhere where it snows.

Do not buy this pin with the combo offered on the bike rack. As I found out, to late, the pin offered by Amazon is the wrong pin and will not work. The bike rack manufacturer uses a specifically designed bolt style pin making this pin unusable. Wait until you get the bike rack and if you do not care for the pin supplied you can order a locking bolt pin from the internet or pick one up at u-haul or someplace else that deals in hitches.

this would not fit the swagman bike carrier the carrier needs a threaded lock this one was solid

Watch out for the sleeve on the lock shaft. If you don't have it aligned right you will have a very hard time locking and unlocking the lock. If the sleeve gets wedged inside your trailer hitch and exerts pressure against the lock head, you won't be able to get the lock off (happened to me). Masterlock needs to redesign this lock to eliminate the sleeve - just make a bigger diameter shaft.