Page 150 - CITS - ED - Mechanical

ENGINEERING DRAWING - CITS

Boiler rivets of different types of heads as per IS:1928-1961 are shown in Fig 2 . They are

Fig 2

– Snap head
– Ellipsoidal head
– Pan head type I & II
– Pan head with taper neck
– Conical head
– Countersunk head

– Rounded countersunk head
– Flat head
– Steeple head
Boiler rivets are used in boiler shells, mountings gussets stays etc. They have generally tapered necks at 60°
chamfer for preventing the leakages of steam. Table 1 shows the preferred length and diameter combination for
boiler rivets.
Structural/General purpose rivets IS:1929, IS:2155: Structural rivets are used in structures like girders of
bridges, trusses of roof etc.

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CITS :Engineering Drawing (Mechanical) - Exercise 8