Complete Glossary Of Thread Terms

As a member of the fastener industry, the terminology of the thread must be one of indispensable knowledge. Xinchi Fastener Company has many years of experience in the fastener industry. We are happy to share our own complete glossary of thread terms, hoping to help you!

A thread is a track of points moving along the surface of a cylinder or cone. The axial displacement of the point is proportional to the corresponding angular displacement.

Thread refers to a continuous projection with a specified tooth shape formed along the thread line on a cylindrical or conical surface. Note: The projection refers to the solid part between the two sides of the thread, also known as the tooth.

Cylindrical threads refer to threads formed on the surface of a cylinder.

Taper thread refers to the thread formed on a conical surface.

An external thread refers to the thread formed on the outer surface of a cylinder or cone.

An internal thread refers to the thread formed on the inner surface of a cylinder or cone.

Thread pair refers to the connection formed by the mutual rotation of internal and external threads.

A single thread refers to the thread formed along a single helix.

Multi-thread thread refers to the thread formed along two or more thread lines. And the helix is evenly spaced in the axial direction.

The right-hand thread refers to the thread that is turned in during clockwise rotation.

A left-hand thread refers to the thread that is turned in during counterclockwise rotation.

A complete thread refers to the thread with a complete shape at the top and bottom of the tooth.

An incomplete thread refers to the thread with the tooth base intact and the tooth apex incomplete.

The washout thread is an incomplete thread at the base of a tooth that transitions to a smooth surface.

Effective thread means a thread consisting of complete and incomplete threads, excluding the washout thread.

Anji Xinchi Fastening Piece Co., Ltd is a one-stop solution fasteners company and is the designated fastener supplier to“STAPLE”. As a trusted fastener supplier,  Xinchi Fastener Company can offer a wide range of high-quality fasteners, including tee nuts, screws, bolts, rivets, washers, etc. If you want to know more about fasteners or want to wholesale fasteners, please feel free to contact us. And then our experienced and expert service team will reply to you as soon as possible.