M12 x 1mm Pitch A2 304 St/st Half Nut Din439

Fine thread lock nuts, also known as jam nuts or half nuts, are low-profile hex nuts designed to lock securely when tightened against a standard hex nut. This locking method helps prevent loosening caused by vibration or movement, making them ideal for precision and high-load applications.

Manufactured with fine threads for increased holding strength and improved adjustment accuracy, these lock nuts are available in a wide range of sizes, thread pitches, and materials to meet diverse industrial and mechanical requirements. Commonly used in machinery, automotive, industrial equipment, and assembly applications where space is limited.