T-Nuts to DIN 508 M5 to M30

Yes, the M designation defines the screw diameter, and unless otherwise specified, the standard metric coarse thread pitch for that diameter

12 Pcs T Slot Bolts M6 35 mm Square Head T Bolts for Roof Rack Stainless Steel Roof Rack Accessories Heavy Duty T Track Bolts with Nuts Washer Barrels Kit for

thunderhorn slot T-slot nuts anchor T-slot bolts to T-slot grooves in milling machines and positioning tables Their T-shaped body slides into a groove and their threaded

t slot milling operation Dimensions of metric threads according ISO 724 Metric Bolt Heads and Wrench Sizes ANSISO, DIN and JIS bolts