5/16"-18, GB,

Used in models:P2060, SD550, 759C, 757C, 758C, 756C, LS190, L150, L185, LS180, L170, LT190.B, L190, LS190.B, L160, C185, LS185.B, LS170, LT185.B, LS150, C175, L180, LS160, LS180.B, L140, L175, LS140, C190, HW365, HW345, HW305S, 25HB, 36HB, H8040, 18HB, H7150, H8080, HW325, H8060, 30HB, 994D, 21HB, BR7070, BR7060, 76C, 74C, CX860, CR970, 92C, 94C, CR960, CR940, CX840, CR920, CX880, SF216, SF210, 32LA, 33LA