| 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 | Inner Cap Wheel Lug Nut, Inner Cap Wheel Lug Nut |
| OEM Part Number | E-5978-R, E-5978-R |
| Application Type | Semi-Trucks, Heavy-Duty Trucks, Semi-Trucks, Heavy-Duty 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 | RH (Right Hand), RH (Right Hand) |
| Net Weight | 0.53 lb., 0.53 lb. |
| Cross References | 133034R, 1332003R, 2011006R, 2011006RP2, 2011006RP5, 385978T, 511010R, 511011R, 916110, 978R, E-5978-R, E5978R, MWCX01873, R005978R, 385978R, M2400, NL5532 |
| Intended Application | - Dual Mounted Aluminum Wheels. OE Standard with full inner threads applications requiring maximum thread engagement.
|
