Hultafors 8-Inch Chisel Knife with Sheath

The Hultafors STK combines a 3mm thick carbon steel blade hardened to 58-60 HRC with the precision of a chisel edge. At that thickness, this isn’t your typical snap-prone utility knife. The SK5 carbon steel blade measures 8 inches overall with a 72mm cutting edge.

The blade features a V-ground chisel edge with double-angle sharpening, finished with leather honing. That’s the kind of edge prep you see on premium woodworking chisels, not utility knives. The flat underside allows for parallel cuts against surfaces.

Blade Engineering and Cold Weather Performance

The 3mm thick carbon steel blade provides exceptional strength for prying, cutting, and woodcarving tasks. Compare that to standard utility knife blades at 0.6-0.7mm — this blade is literally five times thicker. The Japanese carbon steel is hardened to 58-60 HRC. That’s harder than most pocket knives and approaching chisel territory.

Specification	Value
Overall Length	8 inches (203 mm)
Blade Length	72 mm
Blade Thickness	3 mm
Blade Material	SK5 Carbon Steel
Hardness	58-60 HRC
Handle Material	Impact-resistant PP plastic
Edge Type	V-ground chisel edge

Both the handle and holster use impact-resistant PP (polypropylene) plastic. PP stays flexible at -20°F while ABS gets brittle. That matters when your tool bounces off frozen lumber or sits in a cold truck overnight.

Workwear Integration That Actually Works

The sheath clips onto workwear buttons rather than belt loops. This design allows one-handed draw and re-sheathing. It’s compatible with standard workwear buttons found on Fristads, Blaklader, and Hultafors work pants.

The button attachment beats belt clips that snag and fall off. The sheath design prevents loosening while allowing easy removal. Most sheaths either hold too tight (can’t draw quickly) or too loose (knife falls out). This one gets the tension right.

Applications span precision cutting of sheet materials, scoring and cutting piping and insulation, chiseling in construction and carpentry, and utility tasks in HVAC and electrical installations. That’s not marketing fluff — the chisel edge and thick blade handle tasks that would snap a standard utility knife.

Designed in Sweden but manufactured in Taiwan. Don’t let that throw you — Taiwan builds most of the world’s precision hand tools these days. It’s positioned as a versatile, low-cost utility/chisel hybrid compared to dedicated chisels or standard utility knives.

Reviews highlight it as a robust and versatile tool with professional users praising build quality, value, and practicality. WBC stores stock this under product number 380070U.

FAQ

How does the 3mm blade thickness compare to standard utility knives?

The 3mm thick carbon steel blade provides exceptional strength — roughly five times thicker than typical 0.6-0.7mm utility blades. This thickness prevents blade snapping under lateral pressure.

What’s the advantage of the V-ground chisel edge?

The V-ground chisel edge with double-angle sharpening and leather honing creates a dual-purpose edge. You get utility knife cutting plus light chisel work from one tool.

Will the sheath work with standard carpenter pants?

The holster is compatible with standard workwear buttons from Fristads, Blaklader, and Hultafors work pants. The design allows one-handed draw and re-sheathing. Most quality work pants have the reinforced button placement this system needs.

How does PP plastic handle Montana winters?

The impact-resistant PP (polypropylene) plastic handle and holster maintain flexibility down to -20°F. PP outperforms ABS plastic in cold-weather impact resistance.