0.20 to 0.40%

0.35 to 0.45%

0.40 to 0.60%

none of these

slotted for a screw driver and are generally used with a nut

similar to tap bolts except that they are of small size and a variety of shapes of heads are available

used to prevent relative motion between the two parts

none of the above

direct tensile stress

direct compressive stress

direct bending stress

direct shear stress

material of the belt

material of the pulley

uneven extensions and contractions due to varying tension

all of the above

12

14

18

24