Whitworth thread (55? thread angle).
Pitch: 4.5-3.5TPI
55? thread angle
Insize ISY-100-2003, STAND WITH FINE ADJUSTMENT, 2PCS, 6940561936148
Insize IST-SD400, DIGITAL TORQUE SCREWDRIVER, 7.08~35.39in.lb, 6928640326172
Insize ISV-1H6207, RIGID BORESCOPE, 8.23", 6928640323850
Insize ISY-100-9001, 45? STAND, 2PCS, 6940561958379
Insize IST-SD-CABLE, CALIBRATION CABLE, 6928640326356
Insize ISY-300-8, BLOCK, 6940561974843
3M 06995, Vinyl Duct Tape 3903, Black, 2 in x 50 yd, 6.5 mil, 7100145924
Insize ISY-100-27078, SUPPORT HEAD, nylon, 6940561903928
Insize ISY-100-2003, STAND WITH FINE ADJUSTMENT, 2PCS, 6940561936148
Insize IST-SD400, DIGITAL TORQUE SCREWDRIVER, 7.08~35.39in.lb, 6928640326172
Insize ISV-1H6207, RIGID BORESCOPE, 8.23", 6928640323850
Insize ISY-100-9001, 45? STAND, 2PCS, 6940561958379
Insize IST-SD-CABLE, CALIBRATION CABLE, 6928640326356
Insize ISY-300-8, BLOCK, 6940561974843
3M 06995, Vinyl Duct Tape 3903, Black, 2 in x 50 yd, 6.5 mil, 7100145924
Insize ISY-100-27078, SUPPORT HEAD, nylon, 6940561903928
Whitworth thread (55? thread angle).
Pitch: 4.5-3.5TPI
55? thread angle
