Lightweight and thinner than a typical honesuki, the HAP40's durability and edge retention will help you work through pieces of meat with ease.
Product details
- Blade Length: 150mm (Measurement of the cutting edge)
- Total Length: 275mm (Blade + Handle)
- Blade Thickness: 1.92mm (Measured level with heel)
- Blade Height: 37.3mm (Heel to spine)
- Total Weight: 77 grams
- Core Steel: HAP40
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This knife is made from a reactive carbon steel which is not stainless and therefore has some special care instructions and properties.
Read the carbon steel care guide - Cladding Steel: Stainless
- Hardness: 64-65 (HRC)
- Handle Style: Japanese
- Handle Material: Octagonal walnut
- Left or Right handed: Either (Double Bevel)
Product SKU: 9002
Our aim is to measure and photograph all our products as accurately as possible but due to the handmade nature of many items, please be aware that there may be some variance in the measurements and that things such as blade and knife handle patterns can vary and presentation boxes may differ from those shown but we will always endeavour to provide the most accurate measurements, photos and descriptions of our products.
Some measurements such as HRC are provided by the manufacturer and should therefore be used as a guide.
Protection & care for this knife

The Kotetsu Ko-Bunka saya is compatable with this knife.
Blacksmith Profile
Hatsukokoro
Based in Seki city, Hatsukoroko employ a range of techniques and work with a selection of master blacksmiths working entirely by hand and for some ranges, they make use of modern machinery to combine craft with extreme precision.