“PERAMBATAN RETAK (CRACK PROPAGATION) TAP BOLT UNC - OIL COATED ASTM 325 ”. Jurnal Teknik Mesin 2, no. 1 (October 31, 2012): 20–25. Accessed March 21, 2026. https://jtm.itp.ac.id/index.php/jtm/article/view/669.