Skip to product information

3/8" Pin Lock

The 3/8" locking hitch pin that's nearly impossible to find anywhere else.

Most hitch pin locks are 1/2" or 5/8" — this one's 3/8", which is what certain bike racks actually need. If you've been searching and coming up empty, you're in the right place.

Works with:

  • Chuck Rack and Chuck Bucket (Base Post connection)
  • Kuat bike racks (1.25" hitch models)
  • Any rack or accessory with a 3/8" or M10 bolt size pin hole

Specs: 3/8" diameter · 2.5" usable length · Keyed alike (2 keys included)

Regular price $19.99 USD
Sale price $19.99 USD Regular price $26.00 USD
Sale
Sold out

Customer Reviews

Overall rating: 4.9 / 5 from 11 reviews.

Customer photo review of 3/8" Pin Lock

Lock works great for locking down overhanging gear on my rack. Less bulky than padlocks and offer an out-of-sight integration. Like these locks a lot!

3/8" Pin Lock

Customer photo review of 3/8" Pin Lock

The company was great to work with. Product arrive extremely well packaged and in excellent condition. Thanks guys.

3/8" Pin Lock

needed a 3/8 pin llock for the tire rack on my Futura Pro Sport Trailer. Product fit perfectly and appears to be of higher quality than the locks that were there. Support was of great help to be sure that they would match. Thanks

3/8" Pin Lock

The 2" hitch on my truck has the standard 5/8" through-hole designed to accommodate a 5"8 hitch pin, but the slotted-channel hitch mount on my 1Up bike rack is only 3/8" wide. It took me a while to find a pin lock that had a 3/8" diameter pin lock on the internet. Almost all of those I found were either 5/8" or 1/4", but of the few that were 3/8", your Chuck pin loc immediately struck me as significantly better made, and actually a great example to me of the old but wise tenet that "form follows function"! Its operation is silky smooth and it's real purdy to boot! I'm confident that our bikes AND our beautiful 1Up rack will remain safely in our possession in perpetuity! Thanks!

3/8" Pin Lock

I’m using as a hitch pin on my motorcycle, hard to find a 3/4 diameter hitch pin, so I’m hoping this 3/4 pin is tough enough for a hitch.

3/8" Pin Lock

Love that we got the replacement pin/bolt for the Chuck bucket. We put it on, tightened and used the bucket skiing. Now it is all put aside until next season. The Chuck bucket is awesome

3/8" Pin Lock

Worked great !!!

3/8" Pin Lock

The first one I ordered was sent to an old address. Was able to work with Chuck, and get it straightened out. They were good to work with them and I would order from them agin.

3/8" Pin Lock

3/8” shaft locks are hard to find in good quality. This one more than males up for the bad ones. Good lock.

3/8" Pin Lock

Worked as expected

3/8" Pin Lock

Customer Reviews

Overall rating: 4.9 / 5 from 11 reviews.

Customer photo review of 3/8" Pin Lock

Lock works great for locking down overhanging gear on my rack. Less bulky than padlocks and offer an out-of-sight integration. Like these locks a lot!

3/8" Pin Lock

Customer photo review of 3/8" Pin Lock

The company was great to work with. Product arrive extremely well packaged and in excellent condition. Thanks guys.

3/8" Pin Lock

needed a 3/8 pin llock for the tire rack on my Futura Pro Sport Trailer. Product fit perfectly and appears to be of higher quality than the locks that were there. Support was of great help to be sure that they would match. Thanks

3/8" Pin Lock

The 2" hitch on my truck has the standard 5/8" through-hole designed to accommodate a 5"8 hitch pin, but the slotted-channel hitch mount on my 1Up bike rack is only 3/8" wide. It took me a while to find a pin lock that had a 3/8" diameter pin lock on the internet. Almost all of those I found were either 5/8" or 1/4", but of the few that were 3/8", your Chuck pin loc immediately struck me as significantly better made, and actually a great example to me of the old but wise tenet that "form follows function"! Its operation is silky smooth and it's real purdy to boot! I'm confident that our bikes AND our beautiful 1Up rack will remain safely in our possession in perpetuity! Thanks!

3/8" Pin Lock

I’m using as a hitch pin on my motorcycle, hard to find a 3/4 diameter hitch pin, so I’m hoping this 3/4 pin is tough enough for a hitch.

3/8" Pin Lock

Love that we got the replacement pin/bolt for the Chuck bucket. We put it on, tightened and used the bucket skiing. Now it is all put aside until next season. The Chuck bucket is awesome

3/8" Pin Lock

Worked great !!!

3/8" Pin Lock

The first one I ordered was sent to an old address. Was able to work with Chuck, and get it straightened out. They were good to work with them and I would order from them agin.

3/8" Pin Lock

3/8” shaft locks are hard to find in good quality. This one more than males up for the bad ones. Good lock.

3/8" Pin Lock

Worked as expected

3/8" Pin Lock