chapter 3 Materials and processes test 2

fasteners comprise two parts - a pin and a collar with a fracture
section that shears off at a predetermined torque.

Hi-lok

The unthreaded portion of a standard or flush-head pin is called the

The grip length

_rivets have a mushroom shape, a head diameter twice the shank diameter, and a head height approximately 42.5% of the shank diameter.

Universal-head

A sheet holder, commonly called a_
, holds parts tightly in place in order to
maintain hole alignment during drilling and fastener installation.

Cleco

A rivet made of 2117 aluminum goes by the alloy code , Its head is marked with a__

AD, dimple

_ Is the preferred method for making a large hole in metal.

punching

Is used to create a cone-shaped well at the end of a hole to accommodate a fastener head or rivet head.

Countersinking

To drill a hole in hard material, use ____
speed and ____ pressure.

lower, higher

Rivet countersinks in areas exposed to the airstream should be cut so the finished head is _ Inches higher than the surface of the skin on small holes, and ____ inches higher on larger holes.

.004, .008

An installed includes two heads- the manufactured head and the ____ head or (or bucktail) formed at the time driving.

Rivet, shop

were originated by the Goodrich Rubber Company for attaching rubber deice boots.

Rivnuts

To accurately choose the correct length Hi Lok pin, a special _ is used.

Grip gauge

is a simple matter of pushing a rotating twist drill through material at a desired point.

Drilling

Which of these are examples of universal-head rivets?

MS20615 and BACR15BB

Permanent fastener assemblies that use a headed pin with a collar that are used primarily in heavy structures requiring high shear and clamp-up values are called:

Lockbolts

Which of these are examples of standard flush-head rivets?

MS20426 and BACR15BA

Which countersink works best in aluminum?

Six-fluted

Which of these general rules for drilling is wrong?

big drill, hard material, high speed

What fastener fits this definition: "a pin of malleable material that becomes a fastener when the ends are upset to form heads."

Rivet

Select the alternative which best describes the function of the flute section of a twist drill.

Forms the cutting edges of the drill point.

The standard practice in installing a protruding-head rivet is to place the factory head against the:

Thinner sheet of metal

What drill accessory is used to enlarge holes or finish them smoothly to the required size?

reamer

Drill diameters are classified by three size standards. Which of these is not one of them?

length

A main difference between Lockbolt tension and shear fasteners (other than their application) is in the?

Number of locking collar grooves

Normal drilling of sheet material does not require lubrication, but with deeper drilling in thicker material the use of a drill lubricant is needed to:

Remove the chips