Prime‑Line® flange lock nuts provide secure, vibration‑resistant fastening for applications where a strong, dependable hold is essential. Designed with an integrated flange and built‑in locking feature, these nuts help distribute clamping force evenly while resisting loosening caused by movement or repeated use—often eliminating the need for a separate washer. Ideal for use on automotive components, appliances, lawn and garden equipment, furniture, and general mechanical assemblies, Prime‑Line flange lock nuts are intended for use with same‑size matching bolts or machine screws to ensure proper fit and reliable performance. Manufactured from quality materials for strength and durability, they install easily with standard tools and deliver long‑lasting holding power. Trusted by DIY homeowners and professionals across the U.S., Prime‑Line flange lock nuts make fastening safer, simpler, and more secure.
or
