The Parker CPI / A-LOK NPT Tube End Male Adapter (T2HF / MA) is an adapter with a tube stub end and an NPT male thread. It comes in 29 size combinations with tube outer diameters from 1/16" to 2".
| Type | NPT tube end male adapter: tube stub end and NPT male thread |
| Part Numbers | CPI 1-2 T2HF, A-LOK 1MA2N ~ CPI 32-32 T2HF, A-LOK 32MA32N |
| Thread | NPT |
| Size Numbers | Size numbers in the part number are in sixteenths of an inch (for example 1/2" tube = 8, 1/4" thread = 4) |
| 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 |
| Grooving | The tube stub is pre-grooved as standard; inch sizes 1, 2 and 3 do not have grooves |
| Lubrication | Sizes 20, 24 and 32 require additional lubrication prior to assembly |
| Sizes (inches): tube O.D., NPT thread size by CPI Part Number (A-LOK Part Number) | 1-2 T2HF (1MA2N): tube 1/16" x NPT 1/8" / 2-2 T2HF (2MA2N): tube 1/8" x NPT 1/8" / 2-4 T2HF (2MA4N): tube 1/8" x NPT 1/4" / 3-2 T2HF (3MA2N): tube 3/16" x NPT 1/8" / 3-4 T2HF (3MA4N): tube 3/16" x NPT 1/4" / 4-2 T2HF (4MA2N): tube 1/4" x NPT 1/8" / 4-4 T2HF (4MA4N): tube 1/4" x NPT 1/4" / 4-6 T2HF (4MA6N): tube 1/4" x NPT 3/8" / 4-8 T2HF (4MA8N): tube 1/4" x NPT 1/2" / 5-2 T2HF (5MA2N): tube 5/16" x NPT 1/8" / 5-4 T2HF (5MA4N): tube 5/16" x NPT 1/4" / 5-6 T2HF (5MA6N): tube 5/16" x NPT 3/8" / 5-8 T2HF (5MA8N): tube 5/16" x NPT 1/2" / 6-2 T2HF (6MA2N): tube 3/8" x NPT 1/8" / 6-4 T2HF (6MA4N): tube 3/8" x NPT 1/4" / 6-6 T2HF (6MA6N): tube 3/8" x NPT 3/8" / 6-8 T2HF (6MA8N): tube 3/8" x NPT 1/2" / 8-4 T2HF (8MA4N): tube 1/2" x NPT 1/4" / 8-6 T2HF (8MA6N): tube 1/2" x NPT 3/8" / 8-8 T2HF (8MA8N): tube 1/2" x NPT 1/2" / 10-8 T2HF (10MA8N): tube 5/8" x NPT 1/2" / 12-8 T2HF (12MA8N): tube 3/4" x NPT 1/2" / 12-12 T2HF (12MA12N): tube 3/4" x NPT 3/4" / 12-16 T2HF (12MA16N): tube 3/4" x NPT 1" / 16-12 T2HF (16MA12N): tube 1" x NPT 3/4" / 16-16 T2HF (16MA16N): tube 1" x NPT 1" / 20-20 T2HF (20MA20N): tube 1-1/4" x NPT 1-1/4" / 24-24 T2HF (24MA24N): tube 1-1/2" x NPT 1-1/2" / 32-32 T2HF (32MA32N): tube 2" x NPT 2" |