For mating vertical headers see stock number < 747-2525') 747-2525/ typical. For mating right angle headers see stock number < 774-4120') 774-4120/ typical. Harting har-flex Cable Assembly with Strain Relief Female Connectors. These Harting har-flex double ended flat Cable Assemblies are fitted with Strain Relief Female Connectors. The ribbon cable used for these har-flex cable assemblies is 30 AWG with PVC insulation and 0.635 mm pitch. The connectors used for these har-flex cable assemblies have a Performance Level of 1, >500 matings.