CRKT 5510

CRKT K.I.S.S. EDC Folding Pocket Knife Instruction Manual

Model: 5510 | Brand: CRKT

Introduction

The CRKT K.I.S.S. (Keep It Super Simple) EDC Folding Pocket Knife, model 5510, is a revolutionary high-tech statement designed by Knifemakers' Guild member Ed Halligan. This compact and versatile tool is engineered for everyday carry and utility tasks, featuring a unique two-piece construction and an integral frame lock. Its innovative design ensures the cutting edge is safely sealed against the handle when closed, making it a reliable companion for various daily cutting needs.

Product Overview

The K.I.S.S. knife is characterized by its minimalist yet highly functional design. Key features include:

  • Simple Two-Piece Construction: Composed solely of a blade and a frame, embodying the "Keep It Super Simple" philosophy.
  • Dual Grind Tanto Blade: Features a Chisel-Point grind on the front and a flat backside, ensuring the cutting edge is effectively "sealed" against the frame when closed.
  • Triple Point Serrations: The combination edge with Triple Point™ Serrations allows for easy cutting of fibrous materials.
  • Unique Frame Lock: Provides a secure and crisp lockup when the blade is fully open, and allows for one-handed closing.
  • Integrated Pocket/Money Clip: The design allows for versatile carrying options, including clipping to a pocket or using as a money clip.
  • Skeletonized Handle: Reduces weight while maintaining structural integrity.
CRKT K.I.S.S. knife with blade open, showing the tanto-inspired blade and skeletonized handle.
Figure 1: CRKT K.I.S.S. knife in the open position, highlighting its unique blade shape and handle design.
CRKT K.I.S.S. knife with blade closed, showing the integrated pocket clip.
Figure 2: The CRKT K.I.S.S. knife in the closed position, showcasing the integrated pocket/money clip on the reverse side.
CRKT K.I.S.S. knife held in a hand, demonstrating its compact size.
Figure 3: The CRKT K.I.S.S. knife held in an average-sized hand, illustrating its compact and ergonomic design for everyday carry.

Setup

Your CRKT K.I.S.S. knife comes ready for immediate use. No assembly is required. Please ensure you familiarize yourself with the knife's operation before carrying or using it.

  • Unboxing: Carefully remove the knife from its packaging.
  • Included Components: The package typically includes the CRKT 5510 knife and a pamphlet containing additional information.

Operating Instructions

The K.I.S.S. knife is designed for simple and efficient operation.

  1. Opening the Blade:

    Locate the thumb stud on the blade. Apply gentle pressure with your thumb and push the blade outwards until it fully rotates open. The integral frame lock will snap crisply into place behind the blade, securing it in the open position.

    Close-up of the CRKT K.I.S.S. blade showing the thumb stud and serrated edge.
    Figure 4: Close-up of the blade, highlighting the thumb stud for opening.
  2. Closing the Blade:

    To close the blade, locate the frame lock mechanism (the part of the handle that moves to secure the blade). Apply pressure to the frame lock to disengage it from the blade's tang. Once disengaged, carefully fold the blade back into the closed position until it seats against the handle. The precision fit ensures the cutting edge is protected.

    Diagram showing the frame lock mechanism on a folding knife.
    Figure 5: Illustration of a frame lock mechanism, similar to that used on the K.I.S.S. knife, demonstrating how it secures the blade.
  3. Using the Pocket/Money Clip:

    The integrated clip allows for secure attachment to a pocket, belt, or can be used as a money clip. Simply slide the desired item under the clip for secure carry.

    CRKT K.I.S.S. knife closed, showing the pocket clip from a top-down view.
    Figure 6: Top-down view of the CRKT K.I.S.S. knife in the closed position, emphasizing the integrated pocket/money clip.

Official Product Video:

This video provides a detailed overview of the CRKT K.I.S.S. EDC Folding Pocket Knife, demonstrating its features, simple construction, unique frame lock, and everyday utility tasks. It also highlights the award-winning design and available variations.

Maintenance

Proper maintenance will ensure the longevity and optimal performance of your CRKT K.I.S.S. knife.

  • Cleaning: The manufacturer recommends hand washing only. Use mild soap and water to clean the blade and handle. Avoid harsh chemicals or abrasive materials.
  • Drying: After washing, thoroughly dry all parts of the knife to prevent rust or corrosion, especially in the pivot area.
  • Lubrication: Periodically apply a small amount of knife-specific lubricant to the pivot point to maintain smooth opening and closing action.
  • Sharpening: Over time, the blade may become dull. Sharpen the blade using appropriate sharpening tools and techniques, maintaining the original chisel grind.
  • Storage: Store the knife in a dry environment to prevent moisture buildup.

Safety Information

Always handle your knife with care and observe the following safety guidelines:

  • Keep out of reach of children.
  • Always ensure the blade is fully locked open before use.
  • When closing, keep fingers clear of the blade path.
  • Use the knife only for its intended cutting purposes. Do not use it as a pry bar, screwdriver, or hammer.
  • Be aware that the product carries a Proposition 65 warning, indicating it may expose you to chemicals known to the State of California to cause cancer or birth defects or other reproductive harm.
  • Always cut away from your body.
  • Ensure the knife is clean and dry before storing.

Specifications

FeatureDetail
Blade Length2.250" (57.15 mm)
EdgeCombination w/Triple Point™ Serrations
Steel3Cr13 Stainless Steel
Blade FinishBead Blast
Blade Thickness0.12" (3.05 mm)
GrindChisel
Closed Length3.5" (88.9 mm)
Open Length5.750"
Weight2.3 oz (65.2g)
HandleStainless Steel
StyleFolding Knife with Frame Lock
Model NameK.I.S.S.® WITH TRIPLE POINT™ SERRATIONS
Item Model Number5510
UPC097914371050

Troubleshooting

If you encounter any issues with your CRKT K.I.S.S. knife, consider the following common solutions:

  • Stiff Opening/Closing: The pivot screw might be too tight or the mechanism may need cleaning and lubrication. Apply a small amount of lubricant to the pivot and work the blade open and closed several times.
  • Dull Blade: The blade requires sharpening. Refer to the maintenance section for sharpening guidelines.
  • Blade Wobble: Check the pivot screw. If it's loose, carefully tighten it. Do not overtighten, as this can impede smooth operation.
  • Frame Lock Not Engaging: Ensure there is no debris obstructing the lock mechanism. Clean the area thoroughly. If the issue persists, contact CRKT customer support.

Warranty & Support

Your CRKT K.I.S.S. knife is covered by a Limited Lifetime Warranty, which covers any defects in materials or workmanship. For detailed information regarding the warranty policy, claims, or to contact customer support, please visit the official CRKT website:

Visit CRKT Official Website

Additional Resources

For more information and visual guides, explore the official CRKT resources:

© 2025 CRKT. All rights reserved. Information subject to change without notice.

Ask a question about this manual

Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.

After a successful submission, we securely hash the supplied account or form email before sending it to Microsoft Advertising for conversion attribution. Privacy details.