CRKT Linchpin Deadbolt Lock Knife Black G-10 (3.9" Black) 5406K

This Linchpin has a black finished blade with a VEFF partially serrated edge.

From designer Flavio Ikoma, the Linchpin is a simple folding knife that has everything you need for everyday carry and nothing you don't. It's equipped with CRKT's revolutionary Deadbolt Lock, which allows for easy one-hand operation and unrivaled lock stregth. The blade has a spear point shape with a finger choil and a gentle place to rest the thumb when in use. The GRN handle keeps the weight down while still being durable and grippy.


  • 4116 stainless steel blade
  • Smooth flipper action on IKBS Ball Bearings
  • GFN handle is tough and lightweight
Item #BHQ-103623
MSRP: $145.00
Our Sale Price: $39.99!
In Stock!
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  • Overall Length: 8.875"
  • Blade Length: 3.75"
  • Cutting Edge: 3.50"
  • Blade Width: 1.13"
  • Blade Thickness: 0.15"
  • Blade Material: 4116
  • Blade Style: Spear Point
  • Blade Grind: Flat
  • Finish: Black
  • Edge Type: Serrated
  • Handle Length: 5.25"
  • Handle Width: 1.25"
  • Handle Thickness: 0.68"
  • Handle Material: GRN
  • Color: Black
  • Frame/Liner: Steel
  • Weight: 6.20 oz.
  • User: Right Hand
  • Pocket Clip: Tip-Up
  • Knife Type: Manual
  • Opener: Flipper
  • Lock Type: Button Lock
  • Brand: CRKT
  • Model: Linchpin
  • Model Number: 5406K
  • Designer: Flavio Ikoma
  • Country of Origin: China
  • Best Use: Everyday Carry
  • Product Type: Knife

Customer Reviews

It's an Ikoma.
Timothy B. on Nov 3, 2023

Excellent knife for the money, at $40 with that deadbolt system, It would be crazy not to pick one up. Great blade shape and serrations (veff), dead center, smooth and flicks closed great. A must have for a workhorse knife.

Favorite Tactical EDC Under $50
Luke L. on Jul 9, 2023

The MSRP is a joke for the materials, but, if you can get one for under $50, which has been the case for at least several months now, this is an amazing deal. It may not be the best for outdoor use because of the short pocket clip and the particular serrations used, but, if you don't mind how bulky and heavy it is, I would argue it's one of the best budget EDCs out there. Deployment isn't the easiest straight out of the box, but a good wrist flick will still get it open, and it loosens up over time. The deadbolt lock also sticks out of the box, but, once you loosen it up, you can close it one-handed like you might with a crossbar lock or something similar. The lockup is great, and I would definitely recommend adding a deadbolt-locking folder to your collection, even if it's not necessarily this one. I think I would prefer more traditional serrations if I had the choice, but these aren't bad either. The blade is nice and thick, and I have no complaints in terms of overall performance for the type of blade steel. It seems to have a pretty good tip for piercing as well. The pocket clip isn't the best, but it allows it to be carried relatively discreetly, especially considering the overall size. At long as it stays in this price range, I fully expect to buy this as a gift in the future and/or recommend it to someone looking for a knife within this price range.

Huge and heavy duty
Matt Y. on Apr 4, 2023

This knife was way better than what I thought it would be. It’s heavy duty, tough, and fidget friendly! It came sharp (something that the company has struggled with in the past) and sturdy. Love the deadbolt lock too! It’s my new favorite lock by far.

Awesome Knife
Paul B. on Jan 8, 2023

Stoked on this one. The deadbolt is cool, one handed open and close. But the real unexpected win is the ergonomics or hand feel or whatever you want to call it. Nice mellow jimping, good handle design, fits in the hand second nature. Worth 100, glad I caught it for half that. Grab one.

Very nice... and Heavy
Paul K. on Sep 5, 2023

The blade is fantastic, the grip is great, the wave serration is sexy... but holy cow is it heavy. Weighs more than my SpyderCo Police. The blade-assist open works, kind of. Like, if you keep it pointed straight down, it will open and lock. But if you have it pointed in any other way, it opens between 1/4 and 3/4 at best. Unless, of course, you flick your wrist while opening it - then it will open right up, but it's so dang hefty that there's a real fear you might fling it across the room and impale your cat. I'd give it a 8/10 because that blade assist open might as well not be there.

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