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SELECTING THE PROPER SIZE RIVET...

    Proper forming of the rivet is achieved by selection of the proper rivet length, work piece hole diameter, and rivet anvil. Rivets are furnished in various increments of length depending upon the rivet diameter. Up to 1/8" diameter, rivets are furnished in 1/64" increments ... from 9/64" to 3/16" long in 1/32" increments ... and over 3/16" in 1/16" increments.

The following formula may be used to find the proper rivet length.

RIVET LENGTH = COMBINED WORK PIECE THICKNESS + CLINCH ALLOWANCE *

* Use a clinch allowance of 50 - 70% of the body rivet body (See chart below)

The proper hole diameter is determined by adding a factor of 1.07 to the rivet shank diameter .. or 1.07 x Shank dia. = Hole dia.

STANDARD CLINCH ALLOWANCE CHART
(Dimensions in inches)
Rivet shank diameter .060 .065 .088 .098 1/8 9/64 5/32 3/16 7/32 1/4 5/16
Clinch
Allowance		   Semi-tubular .032 .032 .045 .055 .062 .085 .093 .110 .140 .156 .187
  Deep hole     .062 .078 .093 .125 .125 .156 .175 .187 .230
Work piece hole dia. .064 .070 .093 .104 .128 .152 .165 .196 15/64 17/64 21/64
  Drill size #52 #50 #42 #37 #30 #24 #19 #9 15/64 17/64 21/64

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