1. Introduction
The Zero Tolerance 0357 is a robust and reliable folding knife designed for demanding conditions. It features a 3.25-inch drop point blade crafted from high-end CPM 20CV blade steel, offering excellent edge retention and corrosion resistance. The handle is constructed from black G10, machined for a secure grip.
Key Features:
- CPM 20CV Blade Steel: Provides superior edge retention and corrosion resistance.
- SpeedSafe Assisted Opening: Allows for quick and easy one-handed blade deployment.
- Liner Lock: Ensures the blade is securely locked in the open position during use.
- Reversible Deep-Carry Pocket Clip: Offers ambidextrous carry options in the tip-up position.
- G10 Handle: Durable and lightweight, providing a secure grip.
- Made in the USA: Precision built in ZT’s Tualatin, Oregon factory.
Figure 1: The Zero Tolerance 0357 knife in its open position, highlighting the blade and handle design.
2. Important Safety Information
Always exercise caution when handling any knife. Improper use can result in serious injury. Please read and understand the following safety guidelines:
- Keep fingers clear of the blade path when opening or closing the knife.
- Ensure the blade is fully locked before use.
- Always cut away from your body.
- Do not use the knife as a pry bar, screwdriver, or hammer.
- Store the knife in a secure location, out of reach of children.
- Handle with care, as the blade is extremely sharp.
3. Setup and Initial Inspection
Upon receiving your Zero Tolerance 0357 knife, perform the following steps:
- Carefully remove the knife from its packaging.
- Inspect the knife for any visible damage or manufacturing defects.
- Familiarize yourself with the knife's components: blade, handle, flipper, liner lock, and pocket clip.
- Test the SpeedSafe assisted opening mechanism by gently pulling back on the flipper. The blade should deploy smoothly and lock securely.
- Ensure the liner lock engages fully, preventing accidental closure.
4. Operating Instructions
4.1 Opening the Blade (SpeedSafe Assisted Opening)
The 0357 features ZT's SpeedSafe assisted opening system for rapid deployment:
- Hold the knife firmly in one hand with the flipper tab accessible.
- Apply a quick, firm push to the flipper tab with your index finger.
- The blade will spring open and lock into place with an audible click.
Figure 2: Top view of the ZT 0357 knife, demonstrating the blade's full extension.
4.2 Closing the Blade (Liner Lock)
To safely close the blade:
- Locate the liner lock, which is a spring-loaded metal bar inside the handle, visible when the blade is open.
- With your thumb, push the liner lock firmly to the side, disengaging it from the base of the blade.
- Carefully fold the blade back into the handle until it is fully closed. Keep fingers clear of the blade path.
Figure 3: The ZT 0357 knife in its closed and compact state.
4.3 Using the Pocket Clip
The 0357 comes with a reversible deep-carry pocket clip, allowing for tip-up carry on either the left or right side. To change the clip position, use a small Torx screwdriver to remove the screws, reposition the clip, and re-secure the screws.
Figure 4: Detail of the reversible deep-carry pocket clip on the ZT 0357.
5. Maintenance
5.1 Cleaning
To maintain your knife's performance and appearance:
- Hand Wash Only: Clean the blade and handle with mild soap and water. Avoid harsh chemicals or abrasive cleaners.
- Rinse thoroughly and dry immediately with a soft cloth to prevent water spots and corrosion.
- Use compressed air or a soft brush to remove debris from the pivot area and handle scales.
5.2 Lubrication
Periodically apply a small amount of high-quality knife pivot lubricant to the pivot area to ensure smooth blade action. Do not over-lubricate.
5.3 Sharpening
The CPM 20CV blade steel holds an edge exceptionally well. When sharpening becomes necessary, use a quality sharpening system appropriate for high-performance steels. Maintain the original factory edge angle for best results. If unsure, seek professional sharpening services.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Blade is stiff or difficult to open/close. | Dirt or debris in the pivot; lack of lubrication. | Clean the pivot area thoroughly and apply a small amount of lubricant. |
| Blade does not lock securely. | Debris obstructing the liner lock; worn lock. | Clean the liner lock mechanism. If the issue persists, contact ZT customer support. |
| Blade has developed rust spots. | Improper drying after exposure to moisture; acidic substances. | Clean immediately and dry thoroughly. Apply a thin coat of rust preventative oil. |
7. Specifications
| Feature | Detail |
|---|---|
| Brand | ZT (Zero Tolerance) |
| Model Name | 0357 |
| Blade Material | CPM 20CV Steel |
| Blade Length | 3.25 Inches |
| Blade Shape | Drop Point |
| Handle Material | Fiberglass (G10) |
| Overall Length (Open) | 7.7 Inches |
| Lock Type | Liner Lock |
| Opening Mechanism | SpeedSafe Assisted Opening, Flipper |
| Pocket Clip | Reversible, Deep-Carry, Tip-Up |
| Special Feature | Water-Resistant |
| Recommended Uses | Carving, Everyday Carry |
| Product Care | Hand Wash Only |
8. Warranty and Support
8.1 Warranty Information
The Zero Tolerance 0357 knife is covered by a Limited Lifetime Warranty against defects in material and craftsmanship. This warranty applies to the original owner and covers normal use. It does not cover misuse, abuse, alteration, or normal wear and tear.
For full warranty details and limitations, please refer to the official Zero Tolerance website or contact their customer service.
8.2 Customer Support
For any questions, service requests, or to inquire about parts, please visit the official Zero Tolerance website or contact their customer support team. Ensure you have your product model number (0357) ready when contacting support.
Official ZT Website: zt.kaiusa.com