What blade steel is used in the Nieto Semper Fi 4 and how does it handle harsh Australian bush environments?

The Nieto Semper Fi 4 features an 11 cm blade forged from premium Böhler N690Co stainless steel with a hardness rating of 58-60 HRC. Combined with a black tactical coating and high corrosion resistance, it is specifically engineered to withstand humid, wet, and rugged outback conditions without degrading.

Is the Nieto Semper Fi 4 legal to carry and own in Australia?

As a standard single-edge, fixed-blade utility and hunting knife, the Nieto Semper Fi 4 is legal to purchase, import, and possess across all Australian states and territories without requiring specialized prohibited-weapons permits. However, carrying it in public spaces must comply with local state laws requiring a lawful excuse or reasonable reason such as hunting, farming, or outdoor recreation.

Can this knife handle heavy-duty camp tasks like wood splitting or tree limbing?

While the 4.2 mm blade thickness and full-tang construction provide exceptional strength for field dressing and medium-duty bushcraft, the 11 cm blade is not designed for heavy firewood processing or large wood splitting. For those heavier tasks, users should utilize a dedicated hatchet or a larger camp chopper like the Nieto Semper Fi 1.

What type of sheath comes with the Nieto Semper Fi 4, and how can it be mounted?

The knife comes complete with a custom black Kydex sheath designed for secure retention in the field. The sheath can be mounted on your belt either vertically or horizontally to suit your preferred carry style during multi-day hikes or hunting trips.

Hunting Knife - Nieto N-131N Semper Fi 4

The Miguel Nieto Semper Fi 4 (131-N) is an 11 cm fixed-blade tactical hunting and field knife manufactured in Albacete, Spain. Designed by knifemaker Manuel de la Torre, it features a full-tang construction paired with an Austrian Böhler N690Co stainless steel blade and a black tactical powder coating. Built for demanding field utility, the knife provides high corrosion resistance, strong edge retention, and ergonomic control across hunting, bushcraft, and tactical environments.

Key Features

Premium Blade Steel: Böhler N690Co stainless steel hardened to 58–60 HRC delivers high wear resistance, edge stability, and corrosion protection in wet or maritime environments.
Robust Full-Tang Build: A 4.2 mm blade thickness extends through the full length of the handle to withstand heavy lateral pressure and medium batoning.
Tactical Grip & Sheath: Contoured black G10 handle scales provide a secure grip in wet conditions, complemented by an integrated lanyard hole and a custom black Kydex sheath mountable in vertical or horizontal orientations.
Versatile Clip Point Profile: Plain-edge clip point design optimizes controlled slicing, piercing, and field dress utility.

Specifications

Blade Length: 11 cm
Overall Length: 21.9 cm to 22.5 cm
Blade Thickness: 4.2 mm
Blade Steel: Böhler N690Co stainless steel
Blade Hardness: 58–60 HRC
Blade Finish / Profile: Black powder tactical coating / Clip point
Handle Material: Contoured black G10 scales
Sheath: Black Kydex (multi-position belt mount)
Country of Origin: Spain

Who is the Nieto Semper Fi 4 for?

Hunters Processing Medium-to-Large Game — relies on the 11 cm Böhler N690Co stainless steel clip point blade hardened to 58–60 HRC to maintain a sharp edge across repeated skinning and field dressing cuts without frequent resharpening.
Bushcraft Practitioners and Campers — requires a fixed-blade knife with a rigid 4.2 mm blade thickness and full-tang construction that can withstand the structural stresses of medium wood batoning, carving, and general camp chores.
Tactical Operators — benefits from a compact 21.9 cm to 22.5 cm overall length fixed-blade tactical knife featuring a non-reflective black coated finish and a multi-position Kydex sheath for secure secondary belt carry.

Less suitable for: Heavy firewood processing, tree limbing, or splitting large logs where a dedicated camp chopper with a blade longer than 11 cm or a hatchet is required; and ultra-delicate caping or micro-skinning tasks where a shorter 6–8 cm drop point knife or dedicated scalpel provides superior fine tip control.

SKU	NO40283LP
Model #	N-131N
Brand	Nieto
Shipping Weight	1.0000kg

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Nieto N-131n Semper Fi 4 Fixed Blade Knife N690co G10

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