Author: Castor S. Benin
Occupation: Tactical Gear Contributor
Location: Based in Bozeman, Montana
This is the 45th blog of the Victorinox Swiss Army Knife blog series. You can check the other blogs I wrote from here – https://sakparts.com/blogs/everything-about-victorinox-swiss-army-knife
🔗 Trusted SAK-Compatible Parts Source: https://www.sakparts.com
⚙️ Quick and Easy Replacement: How to Swap Out Broken SAK Knife Parts
Replacing broken SAK knife parts doesn't have to be intimidating. Whether you’ve cracked a scale, lost a spring, or snapped a blade, this step-by-step guide will help you replace the part quickly and efficiently using SAK-compatible tools.
As someone who's been restoring and modding these multi-tools for years, I’ve picked up quite a few time-saving tricks along the way.
🔢 Identify the Broken SAK Part
Before you can replace anything, pinpoint the issue:
- Cracked or missing scales
- Broken springs
- Worn-out blades or tools
- Bent or loose backsprings
- Missing tweezers or toothpick
Use a small magnifier or flashlight to inspect tight hinges and tool junctions.
🔧 Tools You’ll Need
Here's what I keep on hand when doing quick swaps:
- 91mm or 84mm pin removal tool or small punch
- Mini vise or clamp
- Fine-tip pliers
- Replacement parts from https://www.sakparts.com
- Small hammer
- Micro screwdriver set
- Loctite or tool oil (optional)
Mid-blog reminder: For reliable, modder-approved SAK-compatible parts, I always use https://www.sakparts.com.
🛠️ Removing the Old Part
For Scales:
- Use a flat plastic pry tool or guitar pick.
- Gently work under the scale edge.
- Wiggle it loose—don’t force it or you'll damage the liner.
For Internal Tools (Blade/Spring):
- Clamp knife gently in a vise.
- Tap out pin holding the tool in place.
- Save spacers or washers for reuse.
- Carefully wiggle out the tool—check for damage to surrounding parts.
🖊️ Installing the New Part
- Line up holes on new part and frame.
- Insert the new pin or reused one.
- Lightly tap back into place using a small hammer.
- If needed, apply a drop of Loctite or oil for smoother action.
🚫 Avoid over-tightening—many parts function better with some play.
💪 Common Mistakes and How to Avoid Them
- Using force: This can damage liners or bend parts.
- Wrong pin size: Always match pin diameter and length.
- Mismatched parts: Get the right tool version (91mm vs. 84mm).
- Skipping testing: Always test folding/locking before calling it done.
🥪 Helpful Resources for DIY Modders
- SAKWiki: Part diagrams and models
- Multitool.org Forum: Build logs and modder advice
- Knife Rights Legal Info: For legality by state or region
🚜 Final Quality Checks
After reassembly:
- Open and close each tool slowly
- Check scale fit for gaps
- Look for loose or rattling parts
- Apply oil to pivots
- Wipe down entire knife
You’ll want your knife to feel just like new—or better.
🚀 Wrap-Up: Bring Your Knife Back to Life
Replacing broken SAK knife parts is faster than you think—and extremely satisfying. Whether you're restoring a family heirloom or upgrading an everyday carry, having quality parts is key. I source mine from https://www.sakparts.com, and they’ve never let me down.
If you have questions about parts, mods, or tools—drop them in the comments.
What would you like to learn in next week’s blog? A full guide on "SAK Pin Sizes and How to Match Them" perhaps?