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ITEM: 6420 US flag

State and Union OSF Folder

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The Old School Folder “OSF” is State & Union’s first take on a frame lock folding knife. The OSF was designed with KA-BAR’s traditional leather stacked fighter in mind, which is why the blade has a fuller or “blood groove”. This knife is a flipper and the pivot is on caged bearings for quick and easy opening. So, if you’re a fan of flippers, this is a knife you need to get your hands on! Equipped with a 3.75” CPM S35VN steel blade, 6Al-4V titanium frame and all 6Al-4V titanium hardware (excluding stop pin, caged bearings, washers, pivot barrel, and lock-bar stabilizer), this knife is built to last a lifetime. The OSF’s pocket clip can also be arranged for tip-up or tip-down carry, so whatever your carry preference may be, we have you covered. If you’re looking for a high-quality folding knife, you can stop your search here!
6420 OSF Folder on Work Bench
  • 6420 OSF Folder on Work Bench
  • State & Union 6420 Folder Open
  • State & Union 6420 Folder Closed
  • State & Union 6420 Folder Close Up
  • State & Union 6420 Folder Close Up Details
  • State & Union 6420 Folder Pocket Clip
  • 6420 OSF Folder Open
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ITEM 6420 US flag

State and Union OSF Folder

(4)
The Old School Folder “OSF” is State & Union’s first take on a frame lock folding knife. The OSF was designed with KA-BAR’s traditional leather stacked fighter in mind, which is why the blade has a fuller or “blood groove”. This knife is a flipper and the pivot is on caged bearings for quick and easy opening. So, if you’re a fan of flippers, this is a knife you need to get your hands on! Equipped with a 3.75” CPM S35VN steel blade, 6Al-4V titanium frame and all 6Al-4V titanium hardware (excluding stop pin, caged bearings, washers, pivot barrel, and lock-bar stabilizer), this knife is built to last a lifetime. The OSF’s pocket clip can also be arranged for tip-up or tip-down carry, so whatever your carry preference may be, we have you covered. If you’re looking for a high-quality folding knife, you can stop your search here!

Handle Color: Gray

450.00 $450.00
In Stock
OSF
State & Union 6421 Folder Open State and Union OSF Folder, Anodized +$500.00
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State & Union 6421 Folder Open
State and Union OSF Folder, Anodized #6421 The Old School Folder “OSF” is State & Union’s first take on a frame lock folding knife. The OSF was designed with KA-BAR’s traditional leather stacked fighter in mind, which is why the blade has a fuller or “blood groove”. This knife is a flipper and the pivot is on caged bearings for quick and easy opening. So, if you’re a fan of flippers, this is a knife you need to get your hands on! Equipped with a 3.75” CPM S35VN steel blade, 6Al-4V titanium frame and all 6Al-4V titanium hardware (excluding stop pin, caged bearings, washers, pivot barrel, and lock-bar stabilizer), this knife is built to last a lifetime. The OSF’s pocket clip can also be arranged for tip-up or tip-down carry, so whatever your carry preference may be, we have you covered. If you’re looking for a high-quality folding knife, you can stop your search here!   This OSF features a blue anodized frame and engraving, along with purple anodized hardware. $500.00
      • Blade Length
      • 3.75 inches
      • Blade Steel
      • S35VN
      • Blade Thickness
      • 0.156 inches
      • Blade Type
      • Folder
      • Blade Width
      • 1.45 inches
      • Color
      • Gray
      • Grind
      • Flat
      • Handle Material
      • Titanium
      • Manufactured In
      • United States
      • Lock Style
      • Frame Lock
      • Overall Length
      • 8.625 inches
      • Shape
      • Spear
      • Tang Stamp
      • S&U
      • Weight
      • 0.4 lb
      • Designed In
      • USA
    • Black KA-BAR Logo
    • KA-BAR

      We are KA-BAR, or more formally, KA-BAR Knives, Inc. You may know us from our high-quality military, hunting, sporting, all-purpose utility, and outdoor survival knives. We offer hundreds of quality cutlery products and accessories sold through independent retailers, distributors, and KA-BAR.com.

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