technical-drawing-threads-fasteners-and-springs Related Question Answers

1. This is the smallest diameter of a screw thread:





2. This is the bottom surface joining the sides of two adjacent threads:





3. ANSI has established three classes of fit.



4. Keys can be used to prevent movement between shafts and wheels.



5. Doubled threads are composed of two or more ridges running side by side.



6. A screw thread is a ridge of uniform section in the form of a helix on the external or internal surface of a cylinder.



7. The major diameter is the largest diameter of a screw thread.



8. Pitch is equal to 12 divided by the number of threads per inch.



9. Springs may be classified as either helical springs or flat springs.



10. Rivets are not considered permanent fasteners.



11. A machine pin is a mechanical device designed to store energy when deflected and to return the equivalent amount of energy when released.



12. Tap drill depth does not include the cone point of the drill.



13. Thread length, finish, and proportions are some of the standard characteristics of bolts and nuts.



14. A torsion spring is a type of helical spring.



15. An internal thread is a thread on the outside of a member.



16. The axis of a screw is the longitudinal centerline through the screw.



17. The root is the top surface joining the two sides of a thread.



18. The form of a thread is the cross section of the thread cut by a plane containing the axis.



19. Multiple threads are composed of one ridge, and the lead is equal to the pitch.



20. A Class 3 fit is exceptionally high quality and recommended only when high cost of precision is warranted.



21. These include taper pins, straight pins, dowel pins, clevis pins, and cotter pins:





22. The distance a screw thread advances axially in one turn is the:





23. The standard number of threads per inch for various diameters is the:





24. This type of fit is high quality and is used for the bulk of interchangeable screw thread work:





25. This type of thread is a thread on the inside of a member:





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