8 - Riveting Flashcards
What is the minimum distance from the edge to the rivet (land) when riveting?
2D
What is the strength of a riveted joint compared to that of the original metal?
75%
For a repair with a double riveted joint, what is the shear strength?
75%
What is the standard minimum rivet row spacing?
4D
What is the normal spacing between rivets?
4D
In British solid rivets, what is the length grading unit?
1/16
For a sheet 1/16 inch thick, what is the approximate rivet diameter to be used?
3/16 inch
How are the lengths of countersunk (flush head) and round/flat head rivets measured?
The length of a countersunk rivet is measured from the end of the rivet to the top of the countersunk head, and the length of a round/flat head rivet is measured from the end of the rivet to the underside of the rivet head; both methods are correct.
If the clearance between the rivet and its hole is too large, what is the potential result?
Separation of the sheets may occur
To replace one 1/8‑inch rivet, how many 1/16‑inch rivets would be required?
Four 1/16‑inch rivets
How many times can treated rivets be re‑heat treated if not used within the prescribed time?
Three times
For how long are rivets kept at –15°C to –20°C usable?
150 hours
How are Avdel rivets closed?
By a broaching process
What is the purpose of the Avdel pin tester?
To test the tightness of the pin in the rivet
How are the stems of an Avdel rivet removed?
They are nipped off and milled flush with the head
What is the operating pressure range for the Avdel Riveter Type F?
60 to 80 lbs per square inch
When countersinking rivet holes, which tool should be used?
A special countersinking bit with a pad to prevent drilling too deep
In the given defect, what is wrong with the rivet?
The snap was not square
What is meant by ‘rivet allowance’?
It is the amount of material required to form the rivet on installation
What is the approximate sphere of influence of a rivet expressed in terms of its diameter?
5D
What is meant by ‘rivet clearance’?
The amount by which the rivet hole diameter exceeds the rivet diameter
What is the minimum rivet pitch?
3 times the rivet diameter
In the given defect, what is the problem with the rivet installation?
The hole was too small
What does the term ‘grip’ of a rivet refer to?
The thickness of plates that can be fastened
What determines the strength of a riveted joint?
The shear strength and pitch of the rivet
If the bearing strength of the metal exceeds the shear strength of the rivet, what will occur?
The rivet will joggle
