ALL SCREW THREADS Search Filter By Price: - 13 X 425 (12.7 M/W) GPI THREADED TUBE$3.97 15 X 425 (15.9 M/W) GPI THREADED TUBE$4.85 18 X 415 (19 M/W) GPI THREADED TUBE$5.27 20 X 400 (19 M/W) GPI THREADED TUBE$6.07 22 X 415 (22 M/W) GPI THREADED TUBE$6.41 24 x 400 (25 M/W) GPI THREADED TUBE$6.62 28 X 400 (28 M/W) GPI THREADED TUBE$9.20 38 X 400 (38 M/W) GPI THREADED TUBE$12.35 GL-14 THREADED TUBE$3.82 GL-18 THREADED TUBE$5.05 GL-25 THREADED TUBE$8.34