Deck 15: Metric Fits

Question 1

For metric fits, the ___________________________________ establishes the magnitude of the tolerance zone or the amount of part size variation allowed for both internal and external dimensions.

Answer 1

International Tolerance Guide

Question 2

Refer to Appendix Table 23 in your textbook. An F8/h7 symbol would be used to specify a ____ fit.

A) close running
B) sliding
C) loose running
D) force

Answer 2

A

Question 3

Grades 1 through 8 are very precise grades.

Answer 3

False

Question 4

A Ø30 f7 fit symbol designates ____.

A) a dimension for a hole
B) a Ø30 hole
C) a dimension for a shaft
D) a hole designed for a high precision fit

Question 5

A Ø30 H8/f7 fit symbol designates _________________________ basis.

Question 6

When using tolerance position letters, capital letters are used for external dimensions, and lowercase letters for internal dimensions.

Question 7

Refer to Appendix Table 25 in your textbook. In a force fit with a 20mm basic diameter, the maximum hole size would be ____ mm.

A) 19.967
B) 20.000
C) 19.946
D) 19.987

Question 8

In the tolerance zone symbol H8, the H stands for a(n) ____________________ dimension.

Question 9

In the hole basis fit system, the basic size is the ____________________ size of the hole.

Question 10

Refer to Appendix Table 24 in your textbook. In a loose running fit with a 10mm basic diameter, the minimum hole size would be ____.

A) 10.090
B) 9.920
C) 9.830
D) 10.000

Question 11

Grade 9 would be suitable for specifying a tolerance requirement for a milling operation.

Question 12

In the metric system of limits and fits, the grade number and the tolerance zone are inversely proportioned.

Question 13

Refer to Appendix Table 24 in your textbook. In a sliding fit with a 32mm basic diameter, the maximum hole size would be ____.

A) 32.000
B) 32.021
C) 31.993
D) 31.980

Question 14

Grade 14 would be suitable for specifying a tolerance requirement for a pressing or rolling operation.

Question 15

The fit symbol includes the fit(s) and the _________________________.