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93 Cards in this Set
- Front
- Back
Malleability
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Ability to be hammered, molded, or shaped without cracking or breaking.
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Ductility
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Ability to be bent permanently or twisted into various shapes without breaking.
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Fusibility
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Ability to become a liquid when heated.
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Thermosetting plastic
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achieves rigidity through chemical reaction. cannot be reheated
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Thermoplastic
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can be machined and will soften with heat. physical rather than chemical change takes place. made of stretched acrylic; laminated 2 sheets and a rubber inner layer.
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Tinner Snips
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cuts straight lines in metal 1/16" thick
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Aviation Snips
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Red-right handed
Green-left handed Yellow-cuts straight metal no thicker than .050" |
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Hacksaws
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cuts metal too thick for snips. blades measured in teeth per inch.
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Types of composite fibers
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carbon graphite fibers
boron fibers DuPont aramid kevlar Aramid Nomex |
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Radome Grade A
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Primary radome grade. Damage could seriously affect aircraft, crew, antenna, etc. All Navy radomes are Class 1.
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Radome Grade B
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Secondary radome grade. Damage would not seriously affect mission, aircraft, safety, etc. All Navy radomes are Class 1.
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Composite Matrix materials
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Epoxy Resins
Bismaleimide Resins PMR Polyamide Resins |
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What are 3 general methods of radome construction?
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Honeycomb, Solid Laminate, Filament Wound
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In preparation of repair what should first be done to surface?
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Contaminate removal and removal of surface coatings.
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Authorized cleaning of aircraft can be found in what manual?
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NA-01-509
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What publication to consult on proper number of plies to be removed from radome?
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Consult the applicable MIM
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Two most common resin selections for radomes on Naval aircraft.
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Polyester & Epoxy Resin
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What does advance composite materials allow?
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Allows replacement of aluminum. Higher strength-to-weight ratio. Aircraft carry larger payloads and save fuel.
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What are the 2 types of thermoplastic materials?
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Stretched acrylic & Laminated.
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What publication is used to find screw torquing limits & procedures?
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The applicable MIM.
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What are characteristics of HARDNESS?
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Ability to resist abrasions, penetrations & distortion.
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What does the second number indicate in an aluminum alloy designation code?
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Any added element.
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4 Special views of orthographic drawing.
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Auxiliary views, Sectional views, Phantom views, & Exploded views.
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Purpose of a flat pattern layout.
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used as a guide or pattern to indicate where to bend or cut metal.
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Malleability
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Ability to be hammered, molded, or shaped without cracking or breaking.
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Ductility
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Ability to be bent permanently or twisted into various shapes without breaking.
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Fusibility
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Ability to become a liquid when heated.
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Thermosetting plastic
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achieves rigidity through chemical reaction. cannot be reheated
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Thermoplastic
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can be machined and will soften with heat. physical rather than chemical change takes place. made of stretched acrylic; laminated 2 sheets and a rubber inner layer.
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Tinner Snips
|
cuts straight lines in metal 1/16" thick
|
|
Aviation Snips
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Red-right handed
Green-left handed Yellow-cuts straight metal no thicker than .050" |
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Hacksaws
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cuts metal too thick for snips. blades measured in teeth per inch.
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Types of composite fibers
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carbon graphite fibers
boron fibers DuPont aramid kevlar Aramid Nomex |
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Radome Grade A
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Primary radome grade. Damage could seriously affect aircraft, crew, antenna, etc. All Navy radomes are Class 1.
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Radome Grade B
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Secondary radome grade. Damage would not seriously affect mission, aircraft, safety, etc. All Navy radomes are Class 1.
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Composite Matrix materials
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Epoxy Resins
Bismaleimide Resins PMR Polyamide Resins |
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What are 3 general methods of radome construction?
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Honeycomb, Solid Laminate, Filament Wound
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In preparation of repair what should first be done to surface?
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Contaminate removal and removal of surface coatings.
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Authorized cleaning of aircraft can be found in what manual?
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NA-01-509
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What is a prick punch used for?
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to make reference marks.
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What is a center punch used for?
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mark locations for drilling, prevents drill from wandering.
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Radome Damage Class 1
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damage to paint or coating only.
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Radome Damage Class 2
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damage not deeper than 2nd ply.
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Radome Damage Class 3
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damage to outer skin only but core is undamaged.
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Radome Damage Class 4
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damage does not exceed 1/2 wall thickness in class "A" radome. does not apply to class "B".
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Radome Damage Class 5
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hole through wall in "A", "B". skin, core & inner skin damaged in "C". damage beyond 3rd layer in class "D".
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What is purpose of a cut line?
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Indicates exact amount of metal required to make a part.
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Define Bend Tangent Line
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indicates beginning and end of a bend.
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Define Setback
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distance from bend tangent line to the mold point.
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Where is the mold point located?
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At the intersection of extension lines outside the formed part.
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two types of twist drill bits
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general purpose and carbide-tipped.
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what is the drill angle?
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the degree of drop from center to the outer edge (59 degrees)
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What portion of a drill bit is inserted into the chuck?
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The shank.
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What is the purpose of a hand drill?
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To drill 1/4" or smaller holes.
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What is the purpose of a pneumatic drill?
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Used for drilling series of large holes where speed and accuracy are required.
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What is the purpose of a drill press?
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To do heavy duty and sensitive drilling.
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Purpose of a riveted joint layout?
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Good layout ensures each rivet carries the share of the required load.
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What is formula for transverse pitch?
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75% of existing rivet pitch.
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What are types of machine countersinks?
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Non-adjustable and adjustable.
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What will selection of a machine countersink depend on?
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Availability
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What will cause chattering when countersinking?
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Dull countersinks.
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What does improper depth cause when countersinking?
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Weak joints and elongated holes.
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What is dimple countersinking?
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Forming cone-shaped recesses by pressing sheet metal between male and female die.
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What is the purpose of dimple countersinking.
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Makes a recess shape to accomodate a flush head fastener without removing much metal. Produces a stronger joint than machine countersinking.
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What does dimple countersinking produce?
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Produces a stronger joint than machine countersinking.
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What is the purpose of press dimpling?
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Dimpling soft alloys & metal .063" or thinner.
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What is the difference between press dimpling and coin dimpling?
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A coin dimpler has a spring loaded ram.
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What does coin dimpling reduce?
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Circumferential cracks.
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Why are holes drilled one size smaller than rivets during dimple construction?
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Dimpling stretches the holes.
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When is combination method used?
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When one metal is too thick to be dimpled and the other is too thin to be machine countersunk.
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List 5 permanent fasteners
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Rivet solid shank
Blind rivets Hi-Shear rivets Jo-Bolts Hi-Lok fasteners |
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What size range do Cleco fasteners go from?
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1/16" to 3/8"
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What is the advantage of an aluminum alloy?
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They have a high strength-to-weight ratio.
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what is a bar folder used for?
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for making bends or folds along edges of sheets of metal. no bend wider than 1" can be made on them.
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what is a box and pan brake for?
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for making boxes and pans of various sizes and shapes.
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what are flanging dies used for?
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used to form a bend or flange in the center of a sheet of metal without distortion such as lightening holes or beads in the center of a rib or bulkhead.
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what are the sizes of twist drill bits available?
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inches - 1/16" to 4+"
letters - A to Z (A is smallest) numbers 80 to 1 (80 is smallest) |
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what is the most important step in the care of all drills and drill bits
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keep them free of corrosion.
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what are the two types of solid shank rivets?
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countersunk head
raised head |
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what alloy is a raised cross rivet made of?
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5056 (magnesium alloy)
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what are the 2 types of blind rivets?
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mechanical lock
friction lock |
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what do the locks do in blind rivets?
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they hold the stem in place.
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what measurements are Jo-Bolts available in?
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1/16"
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what are the two types of solid shank rivets?
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countersunk head
raised head |
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what alloy is a raised cross rivet made of?
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5056 (magnesium alloy)
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what are the 2 types of blind rivets?
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mechanical lock
friction lock |
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what do the locks do in blind rivets?
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they hold the stem in place.
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what measurements are Jo-Bolts available in?
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1/16"
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what are the two types of solid shank rivets?
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countersunk head
raised head |
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what alloy is a raised cross rivet made of?
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5056 (magnesium alloy)
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what are the 2 types of blind rivets?
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mechanical lock
friction lock |
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what do the locks do in blind rivets?
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they hold the stem in place.
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what measurements are Jo-Bolts available in?
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1/16"
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