2/8

8/2

4/8

8/4

screw jack

aeroplane engines

crane

steering mechanism

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

slotted for a screw driver and generally used with a nut

used to prevent relative motion between parts

similar to stud

fine threads

coarse threads

coefficient of friction > tangent of load angle

hole for inserting split pin

metric threads of 33 nos in 2 cm.

metric threads with cross-section of 33 mm

metric threads of 33 mm outside diameter and 2 mm pitch

bolt of 33 mm nominal diameter having 2 threads per cm