The Parker CPI / A-LOK Accessory Locknut (L5N) is an accessory locknut for M2SC and M2TU fittings. It comes in 10 sizes.
| Type | Accessory locknut: for M2SC and M2TU fittings |
| Part Numbers | 2 L5N ~ 16 L5N |
| 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 (threads) by Part Number: Thread | 2 L5N: 5/16-24 / 3 L5N: 3/8-24 / 4 L5N: 7/16-20 / 5 L5N: 1/2-20 / 6 L5N: 9/16-18 / 8 L5N: 3/4-16 / 10 L5N: 7/8-14 / 12 L5N: 1-1/16-12 / 14 L5N: 1-3/16-12 / 16 L5N: 1-5/16-12 |