| Product Line | Driveline & Axles, Driveline & Axles |
| Category Name | Wheel Studs, Inner Cap Nuts and Nuts for Wheels, Wheel Studs, Inner Cap Nuts and Nuts for Wheels |
| Part Type | Inner Cap Nut, Inner Cap Nut |
| Alternate Part Name | Left Hand Wheel End Inner Cap Nut, Inner Cap Wheel Lug Nut, Left Hand Wheel End Inner Cap Nut, Inner Cap Wheel Lug Nut |
| OEM Part Number | E-5978-L, E-5978-L |
| Application Type | Heavy-Duty Trucks, Semi-Trucks, Heavy-Duty Trucks, Semi-Trucks |
| Material | Hardened steel with zinc dichromate coating., Hardened steel with zinc dichromate coating. |
| Hex Size | 13/16 in., 13/16 in. |
| Inner Thread | 3/4 in. -16, 3/4 in. -16 |
| Inner Thread Min. Depth | 1-15/16 in., 1-15/16 in. |
| Outer Overall Length | 3-3/32 in., 3-3/32 in. |
| Outer Thread | 1-1/8 in. -16, 1-1/8 in. -16 |
| Thread Direction | LH (Left Hand), LH (Left Hand) |
| Net Weight | 0.53 lb., 0.53 lb. |
| Cross References | 133034, 1332003L, 2011006L, 2011006LP2, 2011006LP5, 385978L, 511010L, 511011L, 6412355, 916111, 978L, E-5978-L, E5978L, R005978L, 133034L, M2401, NL5533 |
| Intended Application | - Dual Mounted Aluminum Wheels. OE Standard with full inner threads applications requiring maximum thread engagement.
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