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Quality Rivet Standards & Data

Major and Minor Defects & Safe Practice Use

Quality Rivet Standards & Data | Rivet Lengths for Various Grips

Major and Minor Rivet Defects
The different types of rivet imperfections indicated in these drawings are generally permissible by industry standards. Each imperfection is exaggerated for greater clarity. No more than three defects are permitted per rivet. A crack is defined as a clear, crystalline break passing through the grain or grain boundary. This classification includes nicks, seams, inclusions and gouges. Seams or longitudinal scratches sometimes cause cracks to appear.

Pressure to Drive Rivets

Diameter	Tons Pressure Cold	Tons Pressure Hot
3/16"	4.5
1/4"	7
5/16"	12
3/8"	16
7/16"	22
1/2"	29	13
5/8"	44	19
3/4"	64	28
7/8"	87	38
1"	112	50
1-1/8"		63
1-1/4"		77

Recommendation of Safe Practice
to Form Steel Rivet Heads

Formula:

DIA² x 88.36=Tons of Pressure to Drive Rivets

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