The Parker CPI / A-LOK Male Branch Tee SAE Straight Thread (S5BZ / M5BT) is a tee with tube connections on both ends of the run and an SAE straight male thread on the branch. It comes in 5 size combinations with tube outer diameters from 1/4" to 1". CPI uses a single ferrule and A-LOK a double ferrule.
| Type | Male branch tee, SAE straight thread: tube connections on the run, SAE straight male thread on the branch |
| Part Numbers | CPI 4-4-4 S5BZ, A-LOK 4M5BT4 ~ CPI 16-16-16 S5BZ, A-LOK 16M5BT16 |
| Size Numbers | Tube size numbers in the part number are in sixteenths of an inch (for example 1/2" tube = 8) |
| Connection Method | CPI: single ferrule / A-LOK: double ferrule |
| 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 |
| 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) | 4-4-4 S5BZ (4M5BT4): tube 1/4", thread size 7/16-20, O-ring size 3-904 / 6-6-6 S5BZ (6M5BT6): tube 3/8", thread size 9/16-18, O-ring size 3-906 / 8-8-8 S5BZ (8M5BT8): tube 1/2", thread size 3/4-16, O-ring size 3-908 / 12-12-12 S5BZ (12M5BT12): tube 3/4", thread size 1-1/16-12, O-ring size 3-912 / 16-16-16 S5BZ (16M5BT16): tube 1", thread size 1-5/16-12, O-ring size 3-916 |