For 1970s Mopar vehicles with steel wheels, the most common lug nut type is the 1/2-20 thread with a 60-degree conical (acorn) seat, typically found on original equipment (OE) and aftermarket steel wheels. These lug nuts often have a 3/4" hex size. Left-hand thread lug nuts were used on the left side of full-size, B-body, and E-body Mopars through 1970.
Lug Nut Details:
- Thread Size: 1/2-20 (standard thread).
- Seat Type: Conical (60-degree).
- Hex Size: Typically 3/4".
- Material: Steel, often with a chrome plating.
- Length: Varies, but commonly around 1.38".
- Left-Hand Thread: Used on the left side of some Mopar models through 1970.
Important Notes:
- Verify Compatibility:
Always confirm the lug nut type and thread size with your specific vehicle's specifications, as some models or aftermarket wheels may vary.
- OE vs. Aftermarket:
OE (original equipment) steel wheels often use a lug nut that secures a hubcap or center cap. Aftermarket wheels may require a different lug nut style.
- No Lubrication:
Avoid using lubricants or anti-seize on lug nuts or studs, as this can affect torque values and lead to loosening.
- Proper Torque:
Always torque lug nuts to the manufacturer's specifications to ensure safe and secure wheel attachment.