DIN 6330 B
DIN 6330 B - Hexagon nuts with a height of 1.5d, with spherical bearing face
Hexagon nuts 1.5d high with a spherical bearing face, form B: unlike the ISO 4032 or DIN 934 nut, one face is a convex sphere of radius r1 that meets the end face in a circle of diameter d1, and the nut is 1.5d tall, between the regular nut of about 0.8d and the DIN 6334 coupling nut of 3d. With the spherical face the nut seats in a DIN 6319 conical seat; the other face is flat with a 30 degree chamfer and can bear on a DIN 6340 washer. The width across corners is the product grade A e min of the standard. Covers metric coarse pitch from M6 to M48 in the preferred sizes of the 2003 edition.