E669

Retaining Ring 1.205in Free I.D. x 0.125in Wide x 0.093in Thick 30.6mm Free I.D. x 3.17mm Wide x 2.36mm Thick Part number: HLK-5310 OE MFG: MACK OEM Reference: 97AX19 Cross Reference: MACK : 97AX19; OTHER : E-669, M-1512 Product Class: Brake Shoes & Kits The PAI HLK-5310 is a retaining ring measuring 1.205 inches (30.6 mm) in free inside diameter, 0.125 inch (3.17 mm) in width, and 0.093 inch (2.36 mm) in thickness. Retaining rings are heavy duty diesel truck parts that seat in a groove to hold an assembly component in position and resist axial movement. These dimensional details help distinguish the ring when matching service components, while Mack lists 97AX19 as the OEM reference; E-669 and M-1512 are additional cross-references.