My two Camillus BK2s are O.203 and 0.209.
I thought the Blackjack BK2s were 1/4 and the Camillus's were 3/16ths?
I think you're right. It seems the second set of Blackjack specs are actually supposed to be the Camillus specs. Perhaps Bladite can verify this.
ooo Blackjack, and variants
oooo Second from right is an original 1st gen hard-chrome BK0-2
oooo Second from left is a 2nd gen powder coat "sterile" model; they are unmarked due to the powder coat being "tricky"
Factory sheaths were both leather, and a very fine Eagle Industries cordura sheath
o Blackjack era (hard chrome specs)
oo Shape: drop point
oo Edge Angle: ? degrees
oo Grind: flat
oo Steel: 0170-6 or 1095 (depends on literature/generation?)
oo Rc hardness: 56
oo Blade length: 5.25 inches
oo Overall length: 10.625 inches
oo Blade thickness: 0.25 inches
oo Knife Weight: 14.7 ounces
oo Handle: Esta-Loc or Grivory-GV-6H
oo Sheath: Black nylon with "leather" liner, very heavy duty
oo Origins: knife made in USA, sheath made in USA by Eagle Industries
oo MSRP: US$100.00-110.00
There were also some leather sheaths, and some alternate kydex sheaths seen for these. Major knife variant on the last runs included some with a sterile epoxy coating.
ooo Camillus, and variants (serrated)
oooo Left most in above picture, is a factory made serrated BK-02, military requested model
oooo Third to the left in above picture, a standard BK-02 wearing the original Camillus micarta!
oooo Right most in above picture, a standard BK-02 with the normal jammies
o Blackjack era (hard chrome specs)
oo Shape: drop point
oo Edge Angle: ? degrees
oo Grind: flat
oo Steel: 0170-6C
oo Rc hardness: 58-59
oo Blade length: 5.25 inches
oo Overall length: 10.625 inches
oo Blade thickness: 0.188 to 0.210 it seems! not a fulll 0.250
oo Knife Weight: 14.7 ounces
oo Handle: Esta-Loc or Grivory-GV-6H
oo Sheath: Kydex
oo Origins: knife made in USA
oo MSRP: US$100.00
From the Camillus literature: '''Exclusive high carbon steel (0170-6C) flat ground blade, 58-59 RC blade hardness, black epoxy coating, Becker trademark GV6H ergonomic handles, Kydex multi-carry sheath system, Proudly made in the USA''' and '''10-5/8 inch overall length, 4.5 inch length blade, .250 inch thick blade'''