Definition

Noun: A screw thread is the continuous, raised, helical ridge that winds around the cylindrical body of a screw or bolt. This ridge is designed to mate with a corresponding groove in a nut or threaded hole, converting rotational motion into linear motion to fasten or move objects.

Usage

The term "screw thread" refers specifically to the physical helical structure itself. It is a technical term used in engineering, manufacturing, and mechanics. - The mechanic examined the screw thread for any signs of damage or wear. - Precision in cutting the screw thread is crucial for the bolt to fit the nut properly. - The design specifies a fine screw thread for more precise adjustment.

Advanced Usage

• Thread geometry: This refers to the specific shape and measurements of the screw thread, including its pitch, depth, and angle.
  • The engineer analyzed the thread geometry to ensure it met the required standards.
• Thread engagement: This describes the amount of contact between the male (screw) and female (nut) threads.
  • Sufficient thread engagement is necessary for a strong and secure connection.

Variants and Related Words

• Thread (noun): Often used as a shorter, more common synonym for "screw thread" in many contexts.
  • The threads on this bolt are stripped.
• Threaded (adjective): Describing an object that has a screw thread cut into it.
  • Insert the bolt into the threaded hole.
• Threading (noun): The process or action of cutting a screw thread.
  • Threading is a common machining operation.

Synonyms

• Helical ridge: A descriptive synonym emphasizing the spiral shape.
• Spiral groove: While "groove" typically refers to the female part, it is sometimes used interchangeably in a general sense.

Related Phrases

• To thread a screw/nut: The action of cutting a screw thread onto a cylinder or inside a hole.
  • The machine is used to thread screws for custom applications.

Noun

1. the raised helical rib going around a screw