FASTENERS 101™
Blind (POP) Rivets 101


Rivet Application Recommendations - IFI 114

Blind rivets are mainly used in applications where there is no access to the rear (blind side) of the joint. Rivets have a two piece construction; one is called the rivet body, shell, or hat and another is called the stem or mandrel. Both the hat and mandrel are pre-assembled and ready to use. Rivets are installed by using a riveting tool to draw the mandrel which causes the body to deform and clamp down on the joint. Upon reaching the designed clamping force, the mandrel snaps and is discarded. Rivet size and grip range is measured in installed length. IFI 114 Compliant.

How to measure a Rivet: First, measure the diameter of the rivet itself with a dial caliper. Then, just like measuring a bolt, measure the underside of the rivet head to the end of the rivet head. Make sure that you do not measure to the end of the mandrel, you only want the length of the HAT and washer. The grip range of the rivet will be 1/8" shorter than the measured length. EXAMPLE: If the length of the hat is 1/2" the rivet is actually a 3/8" grip (.375), also known as a 4-6 rivet. Please refer to the diagram and charts below for grip ranges, grades, etc.

Grip range is not the same as length, the rivet must expand or swell out on the backside in order to hold the rivet together.


Measuring Rivets

One of the most common questions in the industry is how do I measure a rivet? Albany County Fasteners decided that it was time to clear up the confusion. Below are several resources that can come in handy when measuring rivets.

  • Mandrel - Long end that is broken off of the rivet during installation
  • Hat - Portion of the rivet that is inserted and expanded to fit a hole
stainless steel rivets

Understanding Rivet Grip Range


Here is an example of calculating rivet grip range using a:
6-6, 3/16" STAINLESS STEEL OPEN END DOME HEAD POP RIVET

6-6 = X-Y
Where X Represents Diameter in X/32 and Y Represents Max Grip Range in Y/16
Example:
(X=6, 6/32 = 3/16) Diameter = 3/16
(Y=6, 6/16 = 3/8) Max Grip Range: 3/8
6-6 = (3/16 x 3/8)
Grip Range .251-.375



Helpful Rivet Videos:

Rivet Sizing

Rivet Types and Materials

Rivet Tools

Rivet Installation

How to Remove a Pop Rivet

How to Remove a Spinning Rivet


Shear and Tensile Strength

Nominal Rivet
Size Inch
Minimum Shear Strength (lbs)
Maximum Shear Strength (lbs)
Grade 11 Grade 19 Grade 30 Grade 51 Grade 11 Grade 19 Grade 30 Grade 51
3/32"
(0.0938)
70 90 130 230 80 120 170 280
1/8"
(0.1250)
120 170 260 420 150 220 310 530
5/32"
(0.1562)
190 260 370 650 230 350 470 820
3/16"
(0.1875)
260 380 540 950 320 500 680 1200
1/4"
(0.2500)
460 700 1000 1700 560 920 1240 2100



Rivet Size Guide

Rivet Series # Nominal Size Drill Size Hole Size
Max - Min
Rivet # Grip Range
(Installed)
Body Length



3



3/32"
(0.0938)



#41



0.100 - 0.097
3-2 0.020-0.125 0.250
3-4 0.126-0.250 0.375
3-6 0.251-0.375 0.500
3-8 0.376-0.500 0.625
3-10 0.501-0.625 0.750








4








1/8"
(0.1250)








#30








0.133 - 0.129
4-1 0.020 - 0.062 0.212
4-2 0.063 - 0.125 0.275
4-3 0.126 - 0.187 0.337
4-4 0.188 - 0.250 0.400
4-5 0.251 - 0.312 0.462
4-6 0.313 - 0.375 0.525
4-8 0.376 - 0.500 0.650
4-10 0.501 - 0.625 0.775
4-12 0.626 - 0.750 0.900
4-14 0.751 - 0.875 1.025








5








5/32"
(0.1562)








#20








0.164 - 0.160
5-2 0.063 - 0.125 0.300
5-3 0.126 - 0.187 0.362
5-4 0.188 - 0.250 0.425
5-6 0.251 - 0.375 0.550
5-8 0.376 - 0.500 0.675
5-10 0.501 - 0.625 0.800
5-12 0.626 - 0.750 0.925
5-14 0.751 - 0.875 1.050
5-16 0.876 - 1.000 1.175
5-18 1.001 - 1.125 1.300










6










3/16"
(0.1875)










#11










0.196 - 0.192
6-2 0.020 - 0.187 0.325
6-3 0.126 - 0.187 0.387
6-4 0.188 - 0.250 0.450
6-6 0.251 - 0.375 0.575
6-8 0.376 - 0.500 0.700
6-10 0.501 - 0.625 0.825
6-12 0.626 - 0.750 0.950
6-14 0.751 - 0.875 1.075
6-16 0.876 - 1.000 1.200
6-18 1.001 - 1.125 1.325
6-20 1.126 - 1.250 1.450
6-22 1.251 - 1.375 1.575










8










1/4"
(0.2500)










F










0.261 - 0.257
8-2
0.020 - 0.125 0.375
8-4
0.126 - 0.250 0.500
8-6
0.251 - 0.375 0.625
8-8
0.376 - 0.500 0.750
8-10
0.501 - 0.625 0.875
8-12 0.626 - 0.750 1.000
8-14 0.751 - 0.875 1.125
8-16 0.876 - 1.000 1.250
8-18 1.001 - 1.125 1.375
8-20
1.126 - 1.250 1.500
8-22
1.251 - 1.375 1.625
8-24
1.376- 1.500
1.750

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