Page 17 - CITS - Fitter Trade Practical - Volume -2

FITTER - CITS

• Place the piece of sheet having all holes drilled above another, such that the overlapped edges of the sheets
coincide with the marked lines.
• Insert 3 mm dia snap head rivet in the centre hole. (Fig 3)

Fig 3

• Form the rivet head, with the help of the rivet snap and dolly using ball peen hammer.
• Drill the remaining four holes on the bottom piece of the sheet, through the holes, already drilled on the upper
piece of the sheet.
• Deburr the holes with the larger sized drill, rotating it on the drilled holes, by hand.
• Insert the rivets in alternate holes and form the rivet heads, one by one to make a single riveted lap joint, with
the help of a rivet set, rivet snap, a dolly and a ball peen hammer.

2

CITS : C G & M - Fitter - Exercise 58