Herman Knives Slim M390 Tesseract Titanium Folding Knife

$3,348.00
In stock — ships in 1–2 business days
Item №: 1991 · One-of-a-kind piece, 1 available
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    SPECIFICATIONS
    • Brand: Herman Knives
    • Model: Slim
    • Version: Right-handed
    • Blade steel: Böhler M390 powder stainless steel
    • Blade hardness: 62 HRC
    • Heat treatment: Deep cryogenic treatment with liquid nitrogen
    • Blade thickness: 0.1299 in (3.3 mm)
    • Blade grind: Flat grind
    • Blade finish: Very shiny stonewash, almost mirror polished
    • Detent: Medium
    • Overall length: 8.78 in (225 mm)
    • Blade length: 3.74 in (97 mm)
    • Folded length: 5.00 in (127 mm)
    • Blade width: 1.06 in (27 mm)
    • Weight: 4.52 oz (128 g)
    • Handle: Grade 5 titanium
    • Handle pattern: Tesseract
    • Inlay: None
    • Pocket clip: Grade 5 titanium with Tesseract pattern
    • Backspacer: Grade 5 titanium, floating
    • Lock component: Grade 5 titanium
    • Pivot: Polished 440C stainless steel
    • Pivot hardness: 56–58 HRC, vacuum hardened
    • Pivot drive: TORX T20
    • Pivot construction: Herman-designed and manufactured in-house with increased thread diameter and reduced thread pitch for precise, stable adjustment
    • Screws: Polished vacuum-hardened 440C stainless steel
    • Bearing system: Custom-made ceramic caged ball bearings by Herman Knives
    • Bearing configuration: 16 ceramic balls in a stabilized cage
    • Bearing washers: M390 powder metallurgy steel
    • Washer inner diameter: 0.199 in (5.05 mm)
    • Washer outer diameter: 0.470 in (11.95 mm)
    • Washer thickness: 0.024 in (0.6 mm)
    • Washer hardness: 60 HRC after vacuum heat treatment
    • Washer production: M390 stock machined and pre-drilled in-house on a Citizen Cincom A20 Swiss-type lathe
    • Washer heat-treatment stock length: 0.984 in (25 mm)
    • EDM processing: Inner-hole machining and wire cutting performed on a Mitsubishi MV1200R wire EDM machine
    • Washer finish: Final manual lapping up to 4000 grit for an almost mirror-like bearing surface
    • Detent ball: Ceramic
    • Lock insert: Tungsten carbide
    • Stop pin: Tungsten carbide
    • Included accessories: Original Herman Knives box, microfiber cloth, Pruciak Protector Glide for Herman oil, and dedicated titanium screwdriver manufactured in-house by Herman Knives
    CRAFTSMANSHIP & DETAILS

    The Herman Knives Slim M390 Tesseract pairs a Böhler M390 blade hardened to 62 HRC with an intricately patterned Grade 5 titanium handle. Its flat-ground blade has a very shiny stonewash finish approaching a mirror polish, while the Tesseract pattern extends across the handle and titanium pocket clip for a highly detailed geometric presentation.

    Herman’s upgraded action uses custom caged bearings with 16 ceramic balls running on M390 steel washers manually lapped to 4000 grit. A ceramic detent, tungsten carbide lock insert and stop pin, polished 440C pivot and screws, and floating titanium backspacer complete the construction.

    The set includes the original Herman box, microfiber cloth, Protector Glide oil, and titanium screwdriver.

    PACKAGE CONTENTS: Certificate of authenticity, white cotton gloves, protective packaging.


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    IN THE BOX

    • Certificate of authenticity
    • White cotton gloves
    • Gift box
    Herman Knives Slim M390 Tesseract Titanium Folding Knife
    • Brand: Herman Knives
    • Model: Slim
    • Version: Right-handed
    • Blade steel: Böhler M390 powder stainless steel
    • Blade hardness: 62 HRC
    • Heat treatment: Deep cryogenic treatment with liquid nitrogen
    • Blade thickness: 0.1299 in (3.3 mm)
    • Blade grind: Flat grind
    • Blade finish: Very shiny stonewash, almost mirror polished
    • Detent: Medium
    • Overall length: 8.78 in (225 mm)
    • Blade length: 3.74 in (97 mm)
    • Folded length: 5.00 in (127 mm)
    • Blade width: 1.06 in (27 mm)
    • Weight: 4.52 oz (128 g)
    • Handle: Grade 5 titanium
    • Handle pattern: Tesseract
    • Inlay: None
    • Pocket clip: Grade 5 titanium with Tesseract pattern
    • Backspacer: Grade 5 titanium, floating
    • Lock component: Grade 5 titanium
    • Pivot: Polished 440C stainless steel
    • Pivot hardness: 56–58 HRC, vacuum hardened
    • Pivot drive: TORX T20
    • Pivot construction: Herman-designed and manufactured in-house with increased thread diameter and reduced thread pitch for precise, stable adjustment
    • Screws: Polished vacuum-hardened 440C stainless steel
    • Bearing system: Custom-made ceramic caged ball bearings by Herman Knives
    • Bearing configuration: 16 ceramic balls in a stabilized cage
    • Bearing washers: M390 powder metallurgy steel
    • Washer inner diameter: 0.199 in (5.05 mm)
    • Washer outer diameter: 0.470 in (11.95 mm)
    • Washer thickness: 0.024 in (0.6 mm)
    • Washer hardness: 60 HRC after vacuum heat treatment
    • Washer production: M390 stock machined and pre-drilled in-house on a Citizen Cincom A20 Swiss-type lathe
    • Washer heat-treatment stock length: 0.984 in (25 mm)
    • EDM processing: Inner-hole machining and wire cutting performed on a Mitsubishi MV1200R wire EDM machine
    • Washer finish: Final manual lapping up to 4000 grit for an almost mirror-like bearing surface
    • Detent ball: Ceramic
    • Lock insert: Tungsten carbide
    • Stop pin: Tungsten carbide
    • Included accessories: Original Herman Knives box, microfiber cloth, Pruciak Protector Glide for Herman oil, and dedicated titanium screwdriver manufactured in-house by Herman Knives

    The Herman Knives Slim M390 Tesseract pairs a Böhler M390 blade hardened to 62 HRC with an intricately patterned Grade 5 titanium handle. Its flat-ground blade has a very shiny stonewash finish approaching a mirror polish, while the Tesseract pattern extends across the handle and titanium pocket clip for a highly detailed geometric presentation.

    Herman’s upgraded action uses custom caged bearings with 16 ceramic balls running on M390 steel washers manually lapped to 4000 grit. A ceramic detent, tungsten carbide lock insert and stop pin, polished 440C pivot and screws, and floating titanium backspacer complete the construction.

    The set includes the original Herman box, microfiber cloth, Protector Glide oil, and titanium screwdriver.

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