51) Which one of the following screw thread elements is NOT checked with the thread ring gauge ?

Pitch diameter

Pitch

Helix angle

Profile

Answer is:

Pitch diameter

Explanation:

Pitch diameter of screw thread elements is NOT checked with the thread ring gauge.

Width of crest

Minor diameter

Major diameter

Pitch diameter

Answer is:

Used to tap oversized hole

Used to tap holes with slots

The tap tends to push the chips ahead of the tap

Threads formed by displacing the work material

Answer is:

Explanation:

Spiral fluted taps are used to tap holes with slots.

Round

Square

Y-type

C-type

Answer is:

Beveled

Truncated

Taper

Sharp

Answer is:

Explanation:

The shape of the thread in the NOT GO end of a thread snap gauge is truncated, which means length of NOT GO end is shorter than GO end.