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68 Cards in this Set
- Front
- Back
What kind of nail is this, and what is it used for?
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roofing nail, used to attach asphalt shingles, nail siding, or when you run out of staples
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What kind of nail is this, and what is it used for?
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finish nail, used for finish carpentry (putting trim on)
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What kind of nail is this, and what is it used for?
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galvanized finish nail, used for exterior applications when you want to avoid rust
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What kind of nail are these, and why are they spiraled?
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Spiral box nails, and the spiral increases holding power.
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What kind of nail is this, and what is it used for?
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Common nail, used in the past. Not used much anymore due to the fact that it's very hard to drive in and tends to split the wood.
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What kind of nail is this?
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box nail
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What kind of nail is this, and what is it used for?
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duplex nail, used for temporary applications that you will want to dismantle
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What kind of nail is this?
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masonry
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What kind of nail is this?
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coated box nail
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What kind of nail is this?
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concrete / masonry nail
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What kind of nail is this?
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finish nail
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What kind of screw is this, and when would you use it?
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finish trim screw; Lawrence would only use it to attach wood to a metal frame.
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What kind of screw is this, and where do you use it?
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flat head wood screw, for indoor use. Threads are finer than with deck screws.
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What kind of nail is this?
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common nail
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What kind of screw is this, and what is it used for?
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Deck screw. This is just a wood screw with a corrosion-resistent coating for outdoor use. The colour is chosen to match the material being used (e.g., pressure-treated wood vs. cedar).
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What kind of screw is this?
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drywall screw
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What kind of nail is this?
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galvanized spiral finish nail
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What kind of screw is this?
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machine
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What kind of screw is this?
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pan head wood screw
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What kind of nail is this, and when do you use it?
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ring nail, used to nail down ¼" or ½" sub-sub-floor, or to put drywall on ceilings: tack it in 4 places with ring nails, then come around and screw it in later.
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What kind of screw is this?
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self-piercing steel stud screw
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What kind of screw is this, and what material is it used for?
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self-tapping, used for metal
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What kind of screw is this, and what material is it used for? Is pre-drilling needed?
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Tap Con, used for concrete. Pre-drilling is required, and they will always come with a concrete driver bit.
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What kind of head is this?
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oval head
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What kind of head is this?
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round head
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What type of head is this?
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flat head
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What kind of head is this?
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pan head
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What head drive shape is this?
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slot
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What head drive shape is this?
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Phillips
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What head drive shape is this?
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Robertson
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What head drive shape is this?
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Pozidriv
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What is a brad?
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It is a small finish nail, usually ½" to 1½"
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Why do roofing nails have a wide head?
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They can hold thin or soft material more securely.
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What are masonry nails made out of?
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Hardened steel
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What is the benefit of a nail with a ringed shank?
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Highest holding power; permanent fastening
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What is a smooth-shanked nail typically used for?
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temporary fastening
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What does gauge indicate with respect to screws?
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Smaller gauge = thinner and shorter screws
Higher gauge = longer and fatter screws |
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What are self-tapping screws generally used for?
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to fasten metal framing
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What does the self-tapping aspect of a screw provide?
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These screws have a cutting edge on their point, eliminating the need to pre-drill.
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What kind of screw is this?
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lag screw (large screws with a square or hex head)
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When do you use lag screws?
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When great holding power is needed to join heavy parts and where a bolt cannot be used.
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What is this, and how can you tell?
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carriage bolt, identified by the square section under the oval head
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What is the purpose of the square section of a carriage bolt?
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It is embedded in the wood and prevents the bolt from turning as the nut is tightened.
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What are heavy-duty wall anchors used to secure?
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machinery, hand rails, dock bumpers, storage racks
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What are medium-duty wall anchors used to secure?
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Hanging pipe, ductwork, window and door frames, cabinets
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What are light-duty anchors used to secure?
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junction boxes, bathroom fixtures, closet organizers, small appliances, smoke detectors, and other lightweight objects
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What kind of anchor do you use with concrete screws?
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no anchor!
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What is this, and what is it used for?
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toggle bolt, used for medium-duty fastening into hollow walls
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What is this, and what is it used for?
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plastic toggle, used for light duty anchoring in a hollow wall. Lawrence loves these!
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What is this, and what is it used for?
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conical screw anchor, used for light-duty fastening to hollow walls. Resists stripping when screwed into drywall.
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What is this, and what is it used for?
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Nylon plug, used for light-duty fastening to hollow walls.
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What is a box nail used for?
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Box nails used to be for smaller structures like boxes and crates, but then the framing nail was invented that is between a common nail and a box nail. We will call the framing nail "box" as well. Box nails are used for framing.
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Why is a spiral nail powerful?
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Spiral nails have very good holding power, as the wood dries and shrinks around them.
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What size box nail will we use with "2 by" material?
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3" or 3½" box nail
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What size nail would be best for roof and wall sheathing and sub-floors?
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2" or 2½" box nail
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When do you use screws in framing?
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ONLY on floors
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What is "tensile" strength?
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Tensile strength represents how hard you can pull on something without it breaking. (e.g., dental floss has high tensile strength).
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What is "shear" strength?
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Shear strength represents how hard you can try to cut something without it breaking (e.g., dental floss has low shear strength).
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Do nails have high tensile or shear strength? Why?
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Nails have tremendous shear AND tensile strength, because steel is stretched and has long fibres.
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Do screws have high tensile or shear strength? Why?
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Screws have high tensile but low shear strength, because they are cast.
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Why don't you use screws in structural members other than the floor?
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Screws have low shear strength, meaning that they can easily snap when placed horizontally.
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When would you use coarsely threaded drywall screws, and when would you use finely threaded drywall screws?
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Coarse threads are for wood studs; fine threads are for metal studs.
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What gauge are most drywall screws?
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#6
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When would you use #8 or #10 drywall screws, and what are they called?
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These are "grabber" screws, used to screw drywall to drywall
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What is the fire rating of drywall?
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5/8" drywall gives 1-hour fire rating; 2 layers gives 2-hour fire rating.
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What are the two types of self-tapping screws, and why are they used?
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(1) Self-tapping screws have mini driver bits on the tip
(2) Self-piercing screws have really sharp tips These screws are used to drive into metal. They are great because they are fast, but they will not hold for very long! |
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What is the preferred alternative to self-tapping or self-piercing screws?
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Tap threads into the metal and use a machine screw
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What kind of screw should you use to attach metal to metal?
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Machine screw
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