SOG Stout FLK Folding Knife
SOG Stout FLK Folding Knife
- Model Number: 14-03-01-57
- Blade Length Mm: 66
- Overall Length Mm: 162
- Closed Length Mm: 95.8
- Product Weight G: 116
- Blade Thickness Mm: 3.8
- Blade Material: CRYO D2 tool steel
- Blade Hardness Rc: 58-60
- Blade Finish: Stonewash
- Blade Shape: Clip Point
- Edge Type: Straight
- Locking Mechanism: Frame Lock
- Opening Mechanism: Kick, Thumb Hole
- Handle Material: G10 and Stainless Steel
- Handle Color: Olive Drab & Silver
- Country Of Origin: China
Born from a collaboration between SOG founder Spencer Frazer and renowned Danish custom knifemaker Mikkel Willumsen, the SOG Stout FLK Folding Knife is a purpose-built EDC folder that punches well above its compact dimensions. The FLK sits at a closed length of 95.8mm and a total weight of just 116g, making it genuinely pocketable without sacrificing the rigidity and steel quality you'd expect from a serious working knife. At its heart is a 66mm clip point blade ground from CRYO D2 tool steel, cryogenically heat-treated to SOG's own specifications to land a Rockwell hardness of 58-60 HRC, a sweet spot that balances meaningful edge retention with the toughness needed for everyday hard use. The result is a knife that carries the DNA of a custom collaboration but is built to be carried, used, and relied upon day in and day out.
SOG Stout FLK Folding Knife Key Features
- Blade Steel - CRYO D2 Tool Steel: D2 is a high-carbon, high-chromium tool steel well regarded for its wear resistance and edge-holding ability. SOG's cryogenic heat treatment process refines the steel's grain structure to push performance to 58-60 HRC, delivering a blade that stays sharper for longer under real working conditions.
- Blade Geometry - 66mm Clip Point, 3.8mm Thick: The clip point profile offers a fine, controllable tip well suited to detail work and general cutting tasks. At 3.8mm thick, the blade has genuine backbone without being unwieldy, and the straight edge makes field sharpening straightforward.
- Blade Finish - Stonewash: The stonewash finish reduces surface friction for smoother cutting performance, and the matte, scuffed appearance resists showing everyday scratches and wear, keeping the knife looking presentable with minimal maintenance.
- Handle Construction - G10 and Stainless Steel: The handle combines G10 fiberglass laminate scales with a stainless steel liner, delivering a grip that is both lightweight and exceptionally rigid. G10 is impervious to moisture, temperature extremes, and most chemicals, making it a reliable handle material for outdoor and working use.
- Locking Mechanism - Frame Lock: The frame lock uses a portion of the handle's steel liner to lock the blade open, providing a secure, mechanical lock-up with a minimal parts count. It is a proven, field-reliable system that is easy to operate single-handed.
- Opening Mechanism - Thumb Hole and Kick: Dual opening options via a thumb hole and a blade kick allow for fast, ambidextrous deployment to suit left or right-handed carry.
- Pocket Clip - Reversible Deep-Carry, Tip-Up: The deep-carry clip positions the knife low in the pocket so only the clip is visible, keeping a low profile during everyday carry. The reversible design accommodates left or right-side carry preference.
- Overall Dimensions and Weight: Overall length of 162mm open, closed length of 95.8mm, and a weight of 116g puts the Stout FLK firmly in the carry-all-day category without compromising on blade length or build quality.
- Design Collaboration - Spencer Frazer and Mikkel Willumsen: The Stout FLK was developed jointly by SOG's founder and a well-regarded Danish custom knifemaker, bringing considered custom design sensibility to a production folder.
The SOG Stout FLK is a compact, no-compromise everyday carry folder built around quality steel and a thoughtful collaboration between two respected names in the knife world. Whether it is riding in your pocket on the farm, at the range, or out in the field, the Stout FLK is a knife that is genuinely built to be used.
What steel is the SOG Stout FLK blade made from, and how does it perform?
The blade is made from CRYO D2 tool steel, which SOG cryogenically heat-treats to a hardness of 58–60 HRC. This process is designed to deliver an ideal balance of edge retention and durability, making it well suited to the repeated demands of everyday carry and general-purpose cutting tasks.
How big is the SOG Stout FLK, and is it practical for everyday carry?
The Stout FLK closes to 95.8mm and weighs just 116g, making it compact and light enough for comfortable daily carry. The blade is 66mm long with a 3.8mm thickness. It also features a reversible deep-carry tip-up pocket clip, helping it sit discreetly and securely in your pocket.
What handle materials are used, and how do they hold up with regular use?
The handle combines G10 and stainless steel in an Olive Drab and Silver finish. G10 is a fibreglass-based laminate known for its grip and toughness, while the stainless steel adds structural rigidity. Together, SOG says the handle is built to exceed the demands of a daily carry knife.
How does the SOG Stout FLK open and lock, and is it easy to deploy one-handed?
The knife can be opened one-handed using either the thumb hole or kick (flipper tab), giving you flexible deployment options. Once open, it's secured by a frame lock — a reliable mechanism that uses part of the handle itself to lock the blade in place during use.
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- Bulky Items Surcharge - $39.99: Certain items due to their size and nature require an additional fee for shipping. Bulky items include, but are not limited to, Firearms, Compound Bows, and Spearguns.
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Shipping Specifics
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