- Outdoor 631 universal knife for intensive use. It has the features of a combat knife, ergonomic handle, excellent balance. Nitro-B highly rust-resistant surgical stainless steel with a high nitrogen content of 0.21% and a hardness of up to 62HRC

This product is intended for use only by adults with knowledge and experience in handling sharp cutting tools. Improper use of the knife can result in serious injuries. The blade is extremely sharp and can easily cut through skin and tissue; therefore, extra caution should always be exercised while cutting, and hands should be kept away from the cutting edge. To prevent the knife from slipping, it is recommended to cut on a stable, non-slip surface and avoid excessive force, which may cause uncontrolled blade movement.
Leaving the knife on the edge of a table, countertop, or in easily accessible places—especially where children are present—poses a significant safety risk. The knife should always be properly secured after use, ideally by placing it on a stable surface or storing it in designated knife blocks, protective sheaths, or magnetic strips. The knife should never be used for tasks it is not designed for, such as opening cans or prying objects, as this can damage the tool and lead to dangerous accidents.
A dull blade increases the risk of injury, as it requires more force and is more likely to slip from the material being cut. Therefore, it is essential to sharpen the knife regularly to maintain optimal sharpness. Additionally, proper cleaning and drying of the knife are necessary to prevent corrosion and bacterial growth. Periodic inspection of the handle and blade is recommended to check for cracks, chips, or looseness. If any damage is detected, the knife should be repaired or replaced immediately.
When using the knife, focus solely on the task at hand—avoid talking on the phone, watching television, or other distractions while cutting. Ensure proper lighting in the workspace for better visibility and control. Please note that some countries or regions have laws restricting the ownership and carrying of knives. Before purchasing or using this knife, verify that its use is legal in your location according to applicable regulations.
Following these safety guidelines will help ensure safe and effective knife use, minimizing the risk of accidents and extending the lifespan of the tool.
Outdoor 631, an all-purpose knife designed for heavy use. It has the features of a combat knife half tang construction, ergonomic handle and excellent balance.
Nitro-B - molybdenum-vanadium steel used for high-end knives, cutlery and surgical instruments. It is characterized by a fairly high hardness, as for stainless steels. Resistant to corrosion under kitchen conditions. It is a recommendable alternative to 1.4034 / X46Cr13 / 4H13 material. The chemical composition is enriched with Nitrogen, Chromium, Molybdenum and Vanadium addition. Durable steel with good edge adhesion and extreme hardness up to 62 HRC.
Regular maintenance of Nitro-B stainless steel prevents deposits and maintains its shine. It also makes it easier to remove spots and tarnish. Cleaning should be done before there is a visible layer of dirt or fingerprints, so the danger of permanent discoloration of the steel surface is minimized. For cleaning, do not use agents that contain: chlorine, salt, acids and bleach.
Blade - massive Drop Point coated with scratch-resistant, matte non-reflective IDROGLIDER GOLD® Black coating. The combo blade, Plain and Serrated (saw) derived Flat Grind, provides excellent cutting edge geometry and cutting performance with low friction. On the back of the blade is a multi-functional saw for cutting hard materials, plastics and fibrous materials such as ropes, cords, lines or nets.
Handle - in black. Covered with non-slip textured facings, made of PP and TPE. The stag and the ergonomic shape of the linings prevent the hand from slipping while working.
Sheath - made of hard PP polymer and nylon. The holster is equipped with a safety catch to prevent the knife from slipping out.
Technical data:
Product number: MC 631 BE
Product name: Outdoor 631 BE
Overall length: 295.0 mm / 11.61"
Blade length: 170.0 mm / 6.69"
Blade thickness: 4.0 mm / 0.15"
Handle length: 130.0 mm / 5.10"
Handle thickness: n.d.
Weight: 305.0 g / 10.76 oz
Blade material: Nitro-B
Blade hardness: 58-60HRC
Blade grind: Flat
Blade finish: IDROGLIDER GOLD® Black
Handle material: PP and TPE
Handle finish color: Black
Sheath (holster): PP (polyethylene) / nylon
Additional accessories: none
Designer: MAC Coltellerie
Brand: MAC Coltellerie
Manufacturer: MAC Coltellerie, Italy
Country of origin: Italy
Development: the Sharg® company