Dalil, M.tran. 2026. 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, 1 (Mar. 2026), 59–64. DOI:https://doi.org/10.71452/x44rv532.