The Parker CPI / A-LOK Hose Connector Sleeve (HCS) is a hose connector sleeve selected by hose inner and outer diameter. It comes in 10 hose inner / outer diameter combinations.
| Type | Hose connector sleeve |
| Part Numbers | HCS 2-4 ~ HCS 12-16 |
| Sizes (inches): hose I.D., hose O.D. by Part Number | HCS 2-4: hose I.D. 1/8", hose O.D. 1/4" / HCS 4-6: hose I.D. 1/4", hose O.D. 3/8" / HCS 4-7: hose I.D. 1/4", hose O.D. 7/16" / HCS 4-8: hose I.D. 1/4", hose O.D. 1/2" / HCS 4-9: hose I.D. 1/4", hose O.D. 9/16" / HCS 5-7: hose I.D. 5/16", hose O.D. 7/16" / HCS 6-8: hose I.D. 3/8", hose O.D. 1/2" / HCS 6-9: hose I.D. 3/8", hose O.D. 9/16" / HCS 8-11: hose I.D. 1/2", hose O.D. 11/16" / HCS 12-16: hose I.D. 3/4", hose O.D. 1" |