✍️ Author: Castor S. Benin, Tactical Gear Contributor
📍Location: Based in Bozeman, Montana
🔗 Series Note: This is the 1st blog of the Knife blog series. You can check the other blogs I wrote from here – https://sakparts.com/blogs/everything-about-victorinox-swiss-army-knife
Whether you're just getting into multi-tools or you're a seasoned modder, knowing the essential parts that make up your Swiss-style pocket knife can be a total game changer. This guide breaks down the 10 most important parts you should know — from iconic tools to hidden components — so you can maintain, customize, or build your perfect everyday carry (EDC) knife.
🧩 1. Main Blade
The backbone of every multi-tool, the main blade is your go-to for everyday cutting tasks. Typically crafted from stainless steel or high-performance powder steel, it's durable, versatile, and can be replaced or upgraded depending on your use case.
👉 Why it matters: Understanding blade compatibility (91mm vs. 84mm) is key when replacing or modding.
➡️ Looking to upgrade yours? See an example of a 91mm main blade.
🔩 2. Back Spring
The unsung hero of a folding knife, the back spring provides the tension that keeps tools snapping in and out. Over time, this can wear down — so it’s good to know that replacements exist.
🛠️ Tip: When replacing tools, always inspect the back spring for stress or fatigue.
🪓 3. Wood Saw Blade
Often overlooked, the saw blade is excellent for field use, especially in bushcraft or camping settings. It’s aggressive, long-lasting, and folds neatly like the other tools.
💡 Pro Tip: The teeth are designed to cut on the pull stroke for better control.
➡️ Here’s a compatible wood saw part.
✂️ 4. Scissors
Essential for travel, EDC, or grooming, the scissors in these knives are surprisingly tough. Their internal spring mechanism is often the first to fail — so knowing how to replace it can save your knife.
📦 Only the genuine style scissors fit right. See what's available in SAKParts scissors collection.
🔧 5. Can Opener / Small Screwdriver Combo
This dual-purpose tool is a brilliant example of design efficiency — works well for opening cans and turning Phillips screws. Many people underestimate how versatile this tool actually is.
🔍 More details on design explained well at EDCSource’s can opener article.
🪛 6. Flathead Screwdriver / Bottle Opener
Big, strong, and multi-use — this is more than just a bottle opener. It doubles as a light pry bar and can be used for scraping or wedging.
📎 Modders often reuse this part across builds due to its strength and wide profile.
🔙 7. Back Tools (Awl, Corkscrew, Mini Flathead)
The tools on the back side of the knife can be critical, especially the reamer/awl, which is great for puncturing materials like leather or canvas.
⚠️ Note: When swapping corkscrews, make sure it matches the spacer type — check compatibility.
🔘 8. Scales (Knife Handles)
Scales aren't just for looks — they influence grip, weight, and functionality. Many come with slots for tweezers, pens, or toothpicks.
🧱 Whether you're after a translucent style or something more tactical, custom scales are your modding playground.
➡️ Browse different styles at SAKParts Scales.
🪙 9. Liners & Rivets
These inner components hold everything together. Liners separate tools, and rivets (or bushings) keep them pivoting correctly. They’re crucial during a full rebuild or if you want to create a custom tool stack.
📐 Use calipers to measure if replacing individually — slight differences in thickness can throw off alignment.
🔗 10. Tweezers, Toothpick & Pen
These compact parts complete the knife’s usability in daily life. The pen may require special slot scales, and tweezers must fit flush — otherwise, they can easily fall out.
📦 Note: Some scales have slots, but don't come with the accessories pre-installed.
💬 Wrapping Up
Understanding the anatomy of your Swiss-style knife unlocks not just maintenance but creative possibilities for custom builds and upgrades. Whether you're a hobbyist, survivalist, or tinkerer, mastering these parts makes your gear more personal and functional.
🔍 Want to explore compatible parts or accessories? Check out the collection at sakparts.com.
🗨️ Let's Keep the Conversation Going
Got a question about a specific part or tool? Drop it in the comments — I personally answer each one. What would you like to learn more about in next week’s post? Let me know!