The Parker CPI / A-LOK Tube End to SAE Straight Thread Adapter (T2HOA / TUHOA) is an adapter with a tube stub end and an SAE straight thread. It comes in 5 size combinations with tube outer diameters from 3/8" to 1-1/2".


| Type | Tube end to SAE straight thread adapter: tube stub end and SAE straight thread |
| Part Numbers | CPI 6-4 T2HOA, A-LOK 6TUHOA4 ~ CPI 24-24 T2HOA, A-LOK 24TUHOA24 |
| Size Numbers | Tube size numbers in the part number are in sixteenths of an inch (for example 1/2" tube = 8) |
| 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 |
| Tube Stub End Assembly | Add -Z6 to the part number to have the nut and ferrules assembled on the tube stub end |
| Lubrication | Size 24 requires additional lubrication prior to assembly |
| Size 24 | Size 24 is preassembled with nut and ferrules |
| O-Rings | NBR O-rings are supplied as standard; for fluorocarbon O-rings add the suffix -VO to the part number (other O-rings available upon request) |
| Sizes (inches): tube O.D., thread size, O-ring size by CPI Part Number (A-LOK Part Number) | 6-4 T2HOA (6TUHOA4): tube 3/8", thread size 7/16-20, O-ring size 3-904 / 6-8 T2HOA (6TUHOA8): tube 3/8", thread size 3/4-16, O-ring size 3-908 / 8-6 T2HOA (8TUHOA6): tube 1/2", thread size 9/16-18, O-ring size 3-906 / 10-10 T2HOA (10TUHOA10): tube 5/8", thread size 7/8-14, O-ring size 3-910 / 24-24 T2HOA (24TUHOA24): tube 1-1/2", thread size 1-7/8-12, O-ring size 3-924 |