Resources
Glossary
Fine Thread
A fine thread has more threads per unit length than a coarse thread, making them shallower and more closely spaced. This design provides greater strength, better vibration resistance, and more precise adjustment, though it takes longer to assemble and is more prone to damage or cross-threading.
They are commonly used in automotive, aerospace, and high-stress machinery applications, especially where precision and durability are critical.
Unified National Fine Thread (UNF)
A standard thread form with a tighter pitch, meaning more threads per inch than coarse threads of the same diameter. UNF threads are typically used when a higher level of strength or a more precise fit is needed, especially in applications with limited space or requiring greater tension control.