The effect of thread depth on the fatigue strength of AISI 4140 bolt material as a retainer and fastener for a screw conveyor. Seminar Nasional Tahunan - Teknik Mesin [Internet]. 2026 Mar. 9 [cited 2026 Mar. 10];23(1):59-64. Available from: https://snttm.bkstm.org/index.php/SNTTM/article/view/118