Exam 13: Threads, Fasteners, and Springs

Which of the thread symbols are customarily used for threads under 1"?

The widths of keys are usually about one-third the shaft diameter.

Which of the following screw heads is placed flushed with the surface of the material?

What is the tap drill diameter on an M33x3.5? __________

In the thread designation, .25-20 UNC-2B LH, what is the meaning of "20"?

The thread with flattened roots and crests having a stronger thread describes ____________________.

The jam nut is a special nut to allow easy unscrewing.

The standard screw thread agreed upon for international screw thread fasteners is the _____________.

That part of a thread that is identified as the top surface where two sides join is called _____________.

On drawings of bolts of less than ½" diameter, the chamfer is omitted.

In structural work, the hole is approximately ___________ larger than the rivet.

What is the tap drill size on an 8UN 1 ½" screw? __________

The three basic applications of screw threads are __________, __________, and __________________.

What is the height H of a Hex (UNFIN) bolt having a $\varnothing$ 1-3/8" ? _________

A key is used to prevent relative movement between a shaft and wheel.

The first standardize screw thread was accepted in 1841 and was called the:

A machine screw is a screw with a head that is screwed through one member and is forced against another member.

Which class of fit is recommended for only high-cost situations where continual checking is required? ___________________

The smallest diameter of a screw thread is called ____________________.

The series of threads typically used in automotive and aircraft construction are _________________.