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Westfield Fasteners Product Specification:

DIN 7337 - Blind rivets with Countersunk Head

This product guide contains the specification for blind rivets or pop rivets with a countersunk head as available from Westfield Fasteners. The basis of this specification is the DIN standard DIN 7337.

Product Description
Blind rivets, also known as pop rivets, are an unthreaded fastener. Blind rivets are available in many variations, with differing head types, material combinations and colours. This specification focusses on countersunk head types to the DIN standard DIN 7337.Blind rivets create a permanent fixing and can be used when access is only available on one side of the workpiece or joint. The rivet is fixed in place with a rivet gun.

Scope of the DIN standard.
DIN 7337 specifies the dimensions, design, strength and finish of break mandrel blind rivets. Each rivet consists of a rivet body and an integral mandrel, which breaks off during application. This standard covers all the typical head types and material combinations.

The data in the tables below are provided to assist with installation of these blind rivets. Table 1 defines the overall dimensions and tolerances of this fastener type. Tables 2 and 3 offer minimum shear and tensile strengths respectively by material. Table 4 offers a nominal size for the holes to to be used with these rivets. Tables 5, 6, 7 and 8 give grip length ranges for the various size and material combinations available.

Figure 1: Blind rivets with countersunk head

Figure 1: Blind rivets with countersunk head

User Information:









Table 1: Dimensions & Tolerances according to DIN 7337

d1Nominal SizeMetric-3-4-56-
Imperial2.4-3.2-4.8--6.4
Limit Deviations+0.08 / -0.1+0.08 / -0.15
d2Nominal Size-67.5p1112
Limit Deviations-0 / -0.40 / -0.50 / -0.7
cmax-0.30.4
k=-0.911.21.51.6
rmax0.20.30.40.5



Table 2: Shear Strength according to DIN 7337

Material of rivet bodyDiameter d1
2.433.244.8566.4
Minimum shear force, in N
Aluminium3005006008001400160025002800
Steel-800100015002400260033003600
A2 Stainless-16001800250038004200--
Nickel Alloy--140020003300---
Copper Alloy-800100015002300---
Copper-6007001000----



Table 3: Tensile Strength according to DIN 7337

Material of rivet bodyDiameter d1
2.433.244.8566.4
Minimum tensile force, in N
Aluminium3004005008001200130020002100
Steel-900110020003000320038004000
A2 Stainless-20002300350045005000--
Nickel Alloy--200028003500---
Copper Alloy-900110020003000---
Copper-7008001500----











BlindRivet Cuntersunk Plain DIN 7337

Table 4/Figure 2: Joint hole diameter according to DIN 7337

d12.433.244.8566.4
d3nom2.53.13.34.14.95.16.16.5
limit deviations+0.05 / 0+0.1 / 0+0.2 / 0



Figure 3: Grip length

Figure 3: Grip length

Table 5: Rivets with body made of Al alloy and material made of steel or A2 stainless according to DIN 7337

d12.433.244.8566.4
lengthGrip length range
40.5 to 20.5 to 1.5----
62 to 41.5 to 3.51.5 to 32 to 3--
84 to 63.5 to 5.53 to 53 to 4.52 to 4-
10-5.5 to 75 to 6.54.5 to 64 to 6-
12-7 to 96.5 to 8.56 to 86 to 82 to 6
16-9 to 138.5 to 12.58 to 128 to 116 to 10
20-13 to 1712.5 to 16.512 to 1611 to 1510 to 14
25-17 no 2216.5 to 21.516 to 2115 to 2014 to 18
30---21 to 2520 to 2418 to 23
35---25 to 3024 to 29-
40---30 to 3529 to 34-
45---35 to 4034 to 39-
50---40 to 4539 to 44-



Table 6: Rivet bodies made of steel and mandrel made of steel according to DIN 7337

d12.433.244.8566.4
lengthGrip length range
6-0.5 to 30.5 to 2.5---
8-3 to 52.5 to 4.52 to 4-1 to 3
10-5 to 74.5 to 6.54 to 62.5 to 4.5-
12-7 to 96.5 to 8.56 to 84.5 to 6.53 to 6
16-9 to 12.58.5 to 128 to 116.5 to 10.56 to 9
20-12.5 to 16.512 to 1611 to 1510.5 to 14.59 to 13
25--16 to 2115 to 2014.5 to 19.513 to 17
30---20 to 25--
35---25 to 30--



Table 7: Rivet bodies made of A2 stainless, nickel alloy and copper alloy and mandrel of steel or A2 stainless according to DIN 7337

d12.433.244.8566.4
lengthGrip length range
6-1 to 31 to 2.51 to 2--
8-3 to 52.5 to 4.52 to 4--
10-5 to 74.5 to 6.54 to 6--
12-7 to 96.5 to 8.56 to 8--
16--8.5 to 128 to 11--
20--12 to 1611 to 15--
25--16 to 2115 to 20--



Table 8: Rivet bodies made of copper and mandrel made of steel, A2 stainless or bronze wire according to DIN 7337

d12.433.244.8566.4
lengthGrip length range
4-0.5 to 1.5----
6-1.5 to 32.5 to 3.5---
8-3 to 53.5 to 4.5---
10-5 to 74.5 to 6.5---
12-7 to 96.5 to 8.5---






For further details, please refer to the ISO/DIN standard document for this item.