Page 152 - CITS - ED - Mechanical

ENGINEERING DRAWING - CITS

17, 18, 19, 20, 21, 22, 24, 25, 27, 28, 30

Length of rivet is selected according to the thickness of plates and just long enough to fill the hole completely and
make the head. Rivet joints are formed by drilling holes in plates together (grade of hole H 12). The rivet is placed
through the holes and the shank is either hot forged or cold forged.
Table 1

Rivets for general purposes and boiler rivets (12 to 48 mm diameter) IS:1929-1961
IS:1928-1961
Snap head rivet for Snap head rivet Rounded countersunk Flat countersunk head
boilers for general purpose head for general for general purpose
purpose and boilers and boilers

Basic size of rivets, D, mm: 12 14 16 18 20 22 24 27
30 33 36 39 42 48
Preferred length and diameter combination for rivets for general purposes and boiler rivets

Length Diameter, mm
mm 12 14 16 18 20 22 24 27 30 33 36 39 42 48
28 x – – – – – – – – – – – – –
35.5 x x x – – – – – – – – – – –
40 x x x x – – – – – – – – – –
50 x x x x x x – – – – – – – –
63 x x x x x x x x – – – – – –

80 x x x x x x x x x – – – – –
100 – – x x x x x x x x x x x x
150 – – – – – x x x x x x x x x
200 – – – – – – – – x x x x x x

250 – – – – – – – – – – – – x x
Note: Preferred combinations are indicated by "x"

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CITS :Engineering Drawing (Mechanical) - Exercise 8