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GridLock Screwgate Carabiner

$19.95 USD


  • GridLock Screwgate Carabiner


Our premier screwlock belay biner—the GridLock Screwgate features a unique shape that intuitively captures the belay loop and eliminates the possibility of cross loading.
Item# BD2102570000ALL1
$19.95 USD

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Our premier screwlock belay biner—the GridLock Screwgate features a unique shape that intuitively captures the belay loop and eliminates the possibility of cross loading. Learn More


With its revolutionary, patent-pending design made possible by our in-house hot forge, the Black Diamond GridLock Screwgate eliminates the dangers of cross loading. Designed specifically for belaying, the intuitive, easy-to-use GridLock isolates the belay loop behind its uniquely shaped gate, thereby keeping the carabiner in its proper orientation. The GridLock's I-beam spine transitions into a large, rounded rope-bearing surface for maximum strength and smooth rope feeding. Simply put, you'll never have to deal with a shifting, cross-loaded belay carabiner again.

  • Hot-forged construction
  • Patent-pending design eliminates cross loading while belaying
  • I-beam spine transitions into a rounded, large rope-bearing surface
  • Intuitive and easy-to-use design
  • Screwgate sleeve

Manufacturing the Black Diamond GridLock belay carabiner



Never deal with a shifting, cross-loaded belay carabiner again. The hot-forged GridLock’s radical design has an isolation feature that intuitively captures the belay loop and prevents cross-loading.


Tech Specs

Weight :   76 g (2.7 oz)
Closed Gate Strength :   22 kN (4.946 lb/f)
Open Gate Strength :   8 kN (1,798 lb/f)
Minor Axis Strength :   7 kN (1,574 lb/f)
Gate Opening :   21 mm (.83 in)

Recommended Use



  • Climbing Magazine Editor's Choice 2011

  • klettern magazine recommended award 05/2011


Rated 4.9 out of 5 by 8 reviewers.
Rated 5 out of 5 by Amazing when used correctly The Gridlock Carabiner is fantastic when used correctly! I love mine and it always stays with my Guide ATC even when belaying from above. I however have seen this carabiner used incorrectly way too many times at the crag. Please if you buy this (which I totally recommend) read the instructions and use it properly. The Gridlock was intended to prevent cross-loading and it does a great job! July 20, 2015
Rated 4 out of 5 by stays in place, never crossloads I use these to belay, for my young daugheters to belay each other, and for ascending ropes. They never rotate and cross load with an elegant design over the others out there. Only fault is that the bottom loop is too small to use on an alpine bod harnesses two loops. Better for wet ice climbing than the magnatron version. January 8, 2015
Rated 5 out of 5 by A Simple, Elegant Solution Love love love this carabiner. It fits well in the hand, is simple to use, while giving peace of mind that the biner will stay where it should, when it should. I would like it if BD make a larger version as well for other uses than belay. August 6, 2014
Rated 5 out of 5 by So thankful manufacturers are finally addressing crossloading I look at normal carabiners as the weak link in the climbing chain because of the possibility of cross loading. At one point I even went so far as to use a steel biner with a 53kn rating until I found out it had the same 7kn cross loaded strength. Then I started wrapping surveyor tape around the biner and belay loop to keep it oriented properly, etc. THANK YOU MANUFACTURERS FOR FINALLY ADDRESSING CROSSLOADING! Do I think the gridlock is perfect? Not yet, but I also don't have any opinion on how to improve the design to perfection. The little tail can get caught on stuff and make the gate difficult to open or close. Also, it is very important that you check the location of the belay loop when you lock the gate just to make sure it is in the small eyelet portion of the biner before belaying, EVERY TIME. It is possible that the gate tail could lever the belay loop into the main carabiner opening creating a guaranteed crossload scenario. A super easy check but worth doing every time with this biner (see video.) Don't take this above criticism as a reason not to purchase the gridlock. I will be buying more here soon as I think they are great! You can check belay loop location, you can't check crossloading. I actually don't want anyone belaying me without one. Check this youtube link for a short video I made describing this. June 11, 2014
Rated 5 out of 5 by One less thing to think about I purchased the gridlock when it first came on the scene. It's a pretty genius little biner. I have never been terribly worried about cross loading a biner, but I always use the Gridlock now. One less thing to worry about, more time to focus on climbing. November 15, 2013
Rated 5 out of 5 by Great for its intended purpose. I like this biner. My wife likes this biner. The gridlock does what it is designed to do and I'll leave it at that. There are certainly times that I chose a more traditional biner (like the RockLock). My wife likes her gridlock to much (particularly for multi-pitch or complicated anchor set ups because it gives her a warm-fuzzy that she's not going to side-load anyting). She's making me order two more for back ups in case we ever damage one. We use this in combination with our BD Mini Pearabiner and ATC Guide EVERY time we climb/multi-pitch. October 10, 2013
Rated 5 out of 5 by Never leaves my harness Whether ice or rock climbing, mountaineering, ski touring, the Gridlock never leaves my harness. Sure there are other biners designed to prevent cross loading, but for the first time, I own one of those biners that actually works. Next gen improvement: please increase the depth of the knurling on the gate (for those like me who use the Gridlock with gloves). Overall: It works in real life mountaineering, and simply for that reason, it's excellent. slickness and beautifull design are just bonuses. October 4, 2013
Rated 5 out of 5 by Everyone needs one Finally, a carabiner for my belay loop that won't crossload or twist. Why did it take so long? It's worth having a dedicated biner for belaying and rappeling. It's important and worth keeping it on your harness for cragging. June 12, 2013
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