CFS Blind Fasteners & Rivets

Question 1

What defining characteristic distinguishes a blind fastener from a standard through-bolt?

Accepted Answer

It requires access to only one side of the joint for installation

Answer

It is installed without any tools

Answer

It can only be used in non-structural applications

Answer

It does not require a pre-drilled hole

Question 2

In a break-mandrel (pull-type) blind rivet, what happens to the mandrel during installation?

Accepted Answer

It is pulled until it fractures at a predetermined break notch

Answer

It remains permanently embedded in the rivet body

Answer

It is driven through the rivet with a hammer

Answer

It is threaded and torqued like a bolt

Question 3

What does the 'grip range' of a blind rivet refer to?

Accepted Answer

The total material thickness range the rivet can clamp effectively

Answer

The shear strength range the rivet can withstand

Answer

The range of mandrel diameters compatible with the rivet

Answer

The temperature range in which the rivet can be installed

Question 4

Which blind rivet body material is most commonly paired with stainless steel mandrels for marine and outdoor applications?

Accepted Answer

Aluminum body with stainless steel mandrel

Answer

Carbon steel body with aluminum mandrel

Answer

Copper body with brass mandrel

Answer

Nylon body with steel mandrel

Question 5

An 'open-end' blind rivet differs from a 'closed-end' blind rivet in that the open-end type:

Accepted Answer

Allows liquid and gas to pass through the rivet after setting

Answer

Has no mandrel and is set by direct compression

Answer

Is used exclusively for high-temperature applications

Answer

Provides higher tensile strength than closed-end rivets

Question 6

What is the primary advantage of a structural blind rivet (e.g., Huck BOM or Avdel Bulbex) over a standard open-end break-mandrel rivet?

Accepted Answer

The mandrel is retained and contributes to joint shear and tensile strength

Answer

It is significantly lighter than standard blind rivets

Answer

It can be removed and reinstalled multiple times

Answer

It is compatible with a wider range of hole sizes

Question 7

When selecting a blind rivet, which hole tolerance condition is most critical to ensure proper set and maximum clamp force?

Accepted Answer

The hole diameter should match the nominal rivet body diameter within the specified tolerance

Answer

The hole should be significantly oversized to ease installation

Answer

The hole should be undersized so the rivet expands to fill it

Answer

Hole tolerance is irrelevant for blind rivets