ASME International

Metric Continuous and Double-End Studs
 N B18.31.1M

Annotation

This Standard covers the complete dimensional and general data for continuous-thread and double-end metric series studs recognized as an American National Standard. The following configurations are covered:

continuous-thread stud: studs that are threaded over their complete length.

double-end stud (clamping-type): studs with screw threads of the same length and configuration on each end. This type of stud serves the function of clamping two bodies together with a nut on each end.

double-end stud (tap-end type): a stud designed to be installed in a tapped hole and usually with different threaded lengths on each end. The tap-end studs covered by this Standard have the same thread form on each end with the length of the tap-end threads equal to approximately 1 times the nominal thread diameter.

NOTE: Both types of double-end studs in this Standard may be installed with a nut on each end. Similarly, one end of each type may be set in a tapped hole, usually with a locking compound.

Double-end studs of the following body diameters are covered:

reduced-diameter body. See para. 6.1 for dimensions.

full body. See para. 6.2 for dimensions.

The inclusion of dimensional data in this Standard is not intended to imply that all products described are stock production items. Consumers should consult with suppliers concerning availability of products.