The Parker CPI / A-LOK Inverted Tube Nut (BZI) is an inverted tube nut for fractional tubes. It comes in 2 sizes from 1/16" to 1/8".
| Type | Inverted tube nut |
| Part Numbers | 1 BZI ~ 2 BZI |
| Material | 316 stainless steel (heat code traceable) is standard / Other materials: steel, brass, aluminum, nickel-copper, Hastelloy C, Alloy 600, titanium, 6Mo, Incoloy 625 and 825 |
| Material Codes | Material code added to the end of the part number after a hyphen: B brass / SS or 316 = 316 stainless steel / S steel / A aluminum / M Alloy 400 / HC Hastelloy C-276 / IN Alloy 600 / SS20 Carpenter 20 / 6MO 6Mo / 625 / 825 / T titanium |
| Sizes (inches): tube O.D. by Part Number | 1 BZI: tube 1/16" / 2 BZI: tube 1/8" |