Dalil, M , trans. “The Effect of Thread Depth on the Fatigue Strength of AISI 4140 Bolt Material As a Retainer and Fastener for a Screw Conveyor”. Proceeding SNTTM BKS-TM Indonesia 23, no. 1 (March 9, 2026): 59–64. Accessed March 10, 2026. https://snttm.bkstm.org/index.php/SNTTM/article/view/118.