ASME B18.31.1M-2008 (R2021)


Metric Continuous and Double End Studs

standard by ASME International, 10/24/2008

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ASME B18.31.1M, 2008 Edition – Metric Continuous and Double End Studs

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:

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

2) 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.

3) 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 11/2 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:

a) Reduced Diameter Body

b) Full Body

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.

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