Whitworth thread (55? thread angle).
Pitch: 4.5-3.5TPI
55? thread angle
3M 26130, PPS Series 2.0 Adapter, Type S35, 16 mm Female, 1.5 mm
Thread Stretched, 7100135926
Insize 6318, CALIPER/MICROMETER GRINDING MACHINE (caliper grinding blocks are included), 6940561953862
Insize 4120-18N, METRIC THREAD RING GAGE, NO GO, M18x2.5, 6928640341816
Insize 5022, 2-PIECE MEASURING TOOL SET, 6928640321290
3M 26130, PPS Series 2.0 Adapter, Type S35, 16 mm Female, 1.5 mm
Thread Stretched, 7100135926
Insize 6318, CALIPER/MICROMETER GRINDING MACHINE (caliper grinding blocks are included), 6940561953862
Insize 4120-18N, METRIC THREAD RING GAGE, NO GO, M18x2.5, 6928640341816
Insize 5022, 2-PIECE MEASURING TOOL SET, 6928640321290
Whitworth thread (55? thread angle).
Pitch: 4.5-3.5TPI
55? thread angle
