DIY Frequently Asked Questions
Hardware & Fasteners Terms
Machine Screw
- Can have round, oval, flat and fillister heads.
- Intended to be screwed into pre-threaded holes in metal.
- May look like a bolt, but user drives it with a screwdriver instead of a wrench.
- Comes in coarse (24 threads per inch) and fine (32 threads per inch) sizes.
- They are sized according to diameter, thread and length. Example: a 6-32×3/4 means the screw has a 6-gauge diameter with 32 threads per inch and is 3/4” long.
- The round head type is most commonly used. The flat head type is used when the top must be flush with the surface.
- Oval heads are used in countersunk holes. Fillister heads are used in counter-bored holes.
Wood Screw
- Used to secure wood together.
- Usually made of unhardened steel, stainless steel, aluminum or brass.
- Steel screws can have a choice of several coatings: bright-finished, blued, or zinc-, cadmium- or chrome-plated.
- Threads on this screw run from the point along three-fourths of the length and heads are slotted.
Power Driver Fastener
- Designed specifically for use with power equipment.
- Several types are available. One type is a pneumatic fastener where nails, screws or staples are collated in strips or coils that are loaded into a pneumatic gun that drives them into the material.
- Another type is the powder-actuated fastener, where the fastener is driven into the material, usually metal or concrete, by a small explosion, similar to the way a firearm works.
Nut
- Screws onto the threaded end of a bolt to help tighten the bolt.
- Most common are hex and square nuts, also called full nuts.
- Wing and knurled nuts are used where frequent adjustment or disassembly is necessary.
- The locknut type has a self-locking feature that allows it to be locked into position without additional lock washers, cotter pins or locking wire.
Cotter Pin
- Versatile fastening device.
- Made of ferrous and nonferrous wire.
- Comes in various diameters and lengths ranging from 1/32” x 1/2” to 1/4” to 18”.
- Inserts into a hole in a bolt, shaft or similar part. An eye on one end prevents the pin from going through while prongs at the other end are bent back to lock the pin in place.
Rivet
- Securely fastens something that can be reached from just one side.
- The multi-grip type expands to fill over-sized and irregular holes and self-adjusts for misaligned holes.
- Used in metal, plastic and composite materials.
- Ideal for installing gutters and drop ceilings or repairing large appliances.
- Available in 1/8”, 3/32”, 3/16” and 1/4” diameters.
- Can have dome, countersunk and large flange head styles.
Toggle Bolt
- Used where the back of the wall is inaccessible.
- Works on a spring principle. The holding arms open after the screw and holder are inserted into the hole, gripping the wall as the screw is tightened.
- Select bolts according to the thickness of the diameters from 1/8” to 1/2”.
- Fixture to be mounted must be assembled with screw and holder before inserting it into the wall.
Plastic Screw Anchor
- Use with wood or sheet metal screws.
- Insert into a pre-drilled hole. User drives the screw through the anchor into the wall.
- Sizes range from 3/4” to 1-3/8” long.
- Another type of plastic anchor functions like a toggle fastener with sizes from 3/4” to 3-1/2”.
- Another type pops open and locks into place before the screw is inserted.
Self-Tapping Concrete Screw
- Hardened steel screws designed to cut threads in pre-drilled holes.
- Holes can be drilled through the item to be fastened without moving the fixture.
- Head styles are Phillips, flat or hex-washer.
- Used in poured concrete, concrete block or masonry.
- Pull-out resistance of concrete screws is much greater than in plastic screw anchors because they bite directly into the concrete.
Impact-Expansion Concrete Anchor
- Diameter sizes range from 1/4” to 3/4” and lengths from 1-3/4” to 6”.
- The drill size used should be the same as the anchor diameter.
- Setting the anchor requires driving the center pin down to the top of the anchor, which expands the sides of the anchor against the walls of the hole.
- The hole can be drilled through the item to be fastened without moving the fixture.
- Anchor can be plated hardened steel or stainless steel.
Lag Screw Shield
- Used inside drilled holes to provide anchors in the hole for lag bolts as they are wrenched into the shield.
- As the screw enters the shield, the shield expands and grips the interior.
- Horizontal fins prevent the shield from turning in the hole while tapered ribs ease insertion and ensure against slips.
Expansion Shield
- Also known as lead shield.
- Used with lag and machine bolts.
- As the bolt is tightened, the cone draws up through a slotted sleeve and expands against the interior of the drilled hole with great force.
- Requires no caulking and is excellent for heavy holding of problem material such as cement, cinder blocks, hollow tile and other concrete mixes.
- Requires a large hole. Use a power drill and masonry bit.
- Use short lengths in good-grade concrete or where thickness limits the length. Use long lengths in poorer-grade concrete where extra anchorage is required.
Drive Anchor
- Made of high-strength spring steel or of aluminum with a stainless steel pin for use in hard materials.
- Driven into a hole where it is compressed and forced against the walls of the hole.
- Comes in three head styles: round, countersunk and stud. The stud type provides temporary attachment of items that must later be removed.
Roofing Nail
- Has large heads and diamond points.
- Galvanized to resist corrosion.
- Barbed shank for greater holding power.
- Nails for a new roof are typically 7/8” long with 7/16” head.
- Carefully choose size to match the thickness of the roofing.
- Sealing roofing nails have a plastic or rubber washer under the nail head for watertight seal.
Door Closer
- Closes the door at a controlled speed. Usually used on storm and screen doors.
- Operates with a spring and piston. When the door is pulled open, the spring inside the cylinder is depressed, thus exerting pressure to pull the door closed automatically. The piston controls the speed. An adjusting screw allows the user to change the speed of the closing.
- A closer made for the disabled has an automatic hold-open feature that engages when the door is opened about 90º. A wheelchair occupant can tap the door again in the opening direction to close it automatically.
- Interior door closers have a canister-like apparatus mounted on the door and a knuckle-joint arm to push the door closed. A spring-loaded closer is another type that can be installed on existing door hinges.
- Use closer reinforcements to attach to the frame to provide a stronger anchor.
Door Plates
- Kick plates protect the bottom of the door from scuffing.
- Push plates provide a non-marring surface where the user can push the door open.
- Pull plates provide a handle to open doors.
- Adds a decorative touch to doors.
- Available in a variety of materials, including brass, stainless steel and anodized aluminum.
Threshold
- A strip fastened to the floor beneath a door.
- It usually covers the joint where two types of floor material meet.
- Can be made of metal, aluminum or wood.
- It may have a rubber strip in the center to aid in weatherproofing.
- An astragal is a molding or strip that covers or closes the gap between the edges of a pair of doors. Some types overlap while others meet at the centerline of the gap.
Screen Storm Door Hardware
- Includes a variety of latches, strikes and pulls available as original or replacement hardware for screen and storm doors.
- Some latches have keyed locks.
- Most are designed for easy installation and are weather-resistant.
- Most are designed for specific types of doors (wood vs. aluminum) and door thicknesses.
Barn Door Hardware
- Made of zinc or galvanized, heavy-gauge steel especially for barns and outbuildings where rough, heavy-duty use is required.
- Consists of a hanger similar to a four-wheel trolley with a box-shaped track that acts as a guide.
- Use either roll or ball bearings. Ball bearings are considered the superior choice.
- Capable of supporting loads from 100 lbs. to 3,000 lbs.
- The track is usually mounted to the building by brackets, although some track requires no brackets and is mounted directly to the building with screws.
- Other hardware includes flush pulls, bow handles, stay rollers, bottom guides, bumper shoes and end stops.
Garage Door Opener
- Consists of a motor unit that raises and lowers overhead doors upon command of a control unit.
- There are three types of drive mechanisms: bicycle-type chain and sprocket, plastic strip and worm-screw drive.
- The control unit may be either key or wireless operated. If key operated, the user must leave the car to unlock the door. Wireless versions may be operated via a transmitter that starts the opener motor.
- A safety feature is a device that automatically reverses the descent of the door when it encounters resistance when closing. All residential garage door openers must incorporate an optical sensor that will prevent the door from closing if it senses an obstruction.
- Economy models have a 1/4-hp motor and heavy-duty units have a 1/3- or 1/2-hp motor.
Cabinet Hinge
- The four basic cabinet door designs that determine the type of hinge required are: flush-mounted, lipped/inset, flush-overlay or reverse bevel.
- For flush-mounted doors, use a full-mortise butt or full-surface hinge, an ornamental strap hinge or a concealed hinge.
- For lipped doors, use semi-concealed cabinet hinges so the hinge leaf attached to the cabinet frame is exposed and the hinge leaf attached to the door is concealed. A surface hinge for this kind of cabinet door must be offset to match the outside of the door.
- For flush-overlay doors, use a pivot hinge mortised into the top and bottom of the door. Also use a butt hinge or a semi-concealed hinge.
- For reverse bevel doors, use a hinge that features a slant on the door wing that is compatible with the profile of the cabinet door.
- Some hinges have a self-closing feature that closes the door automatically from about a 10° opening. These operate on a spring-loaded cam and are made from heavy-gauge steel.
Cabinet Knob
- Used on cabinet doors and drawers.
- Basic consideration in choosing a knob will be style.
- Backplates are decorative and provide additional support for hollow-core doors and drawers.
- When replacing an old knob, remember to make sure the new knob will use or cover the holes left by the old one. Use a backplate to cover the second hole if replacing a pull with a knob.
- Most knobs use one #8 screw for mounting.
Cabinet Pull
- Used on cabinet doors and drawers.
- Backplates are decorative and provide additional support for hollow-core doors and drawers.
- Basic consideration when choosing will be style.
- When replacing an old pull, remember to make sure the new knob will use or cover the holes left by the old one. Use a backplate to cover the hole if replacing a knob with a pull.
- Pulls are generally on 3” mounting centers.
Magnetic Catch
- Uses a magnet to help the cabinet door stay shut.
- Ranges in pull from 8 lbs. to 40 lbs.
- The holding power is reduced if only part of the magnet makes contact with the strike. Therefore, the magnet must be installed carefully to properly align the catch and the strike.
- Quality features include a floating or self-adjusting action to ensure proper alignment and contact.
Bullet Catch
- Helps the cabinet door stay shut.
- Used primarily on furniture and smaller cabinet doors where it is desirable to hide the catch as much as possible.
Drawer Slide
- The monorail type uses a single track under the center of the drawer with drawer rollers on the left and right side. It is easy to install because it requires minimum measuring and templates. It is low in cost and fits both new and old installations.
- The side-mounting type uses four tracks, one attached to each side or bottom of the drawer and one on both the left and right sides of the cabinet. It has rollers on which the drawer rides.
- Some types of slides are self-closing. They close when the drawer comes to within 4” to 5” of the back, regardless of the load or its position in the drawer.
- Quality slides permit little side movement, prevent accidental drawer pullout, have high-quality rollers and are precision-made to close tolerances.
Furniture Glide
- Allows furniture to move easily along the floor. Also protects floor from scuffing.
- The three-prong type is hammered into the legs of light furniture. It is easy to install and easy to remove.
- The cushion type is for heavier use and is mounted by hammering into the furniture leg.
- A cushion glide for caster holes is the best type for heavy furniture. Here, the socket replaces normal stem-type casters.
- Some glides have a tilting stem with a 40° range of movement. These glides are made for furniture with angled legs so that the base of the glide sits flat on the floor.
- Other types of glides include rubber leg tips and heavy-duty, self-adhesive nylon or felt pads.
Stem Caster
- Provides mobility for heavy furniture.
- Select caster based on the weight of the piece of furniture, floor surface and the method of attaching it to the furniture.
- Always recommend the largest size caster consistent with furniture style.
- If casters are to be used on furniture, consider the occupied weight of the piece rather than the furniture weight alone.
- Use a socket adapter inserted into a hold in the furniture. The stem of the caster then slides into the socket.
- The top end of the socket snaps into a small ridge in the stem.
Plate Caster
- Provides mobility for heavy furniture.
- Select caster based on the weight of the piece of furniture, floor surface and the method of attaching it to the furniture.
- If casters are to be used on furniture, consider the occupied weight of the piece rather than the furniture weight alone.
- Designed to be attached to the furniture with screws or bolts.
Caster Wheel
- Comes in a variety of diameters and materials with a multitude of uses.
- Consider load requirements, type of flooring and amount of floor protection needed when choosing a caster.
- Soft rubber wheels are recommended for asphalt tile, hardwood floors, etc.
- Plastic wheels that are non-marking are recommended for rugs and carpeted floors.
- Metal wheels are desirable where casters will carry heavy loads or where protection of the flooring is not important.
Traverse Rod
- Allows opening and closing of drapes with a downward pull on a cord.
- Usually used with heavy drapes.
- Can be wall-mounted or attached to the ceiling.
- Draperies close from each side of the window to meet in the center.
- One-way draw rods draw the drape fully to the left or fully to the right. They are usually used with patio doors or corner windows.
- Made of two telescoping track sections, adjustable to desired length.
- Six sizes cover windows up to 312” wide in the following ranges: 28” to 48”, 48” to 84”, 66” to 120”, 84” to 156”, 156” to 216” and 216” to 312”.
- One variation of a traverse rod allows the drapes to be drawn completely clear of the window at the sides, giving the effect of a wider window.
- Another type holds a curtain rod in front of the traverse rod and supports a full-width balance.
- One type holds a sheer curtain behind the traversing draperies.
Wood Pole Rod
- Used with rings for pleated draperies and with high headers.
- Can have a stained, painted or natural finish.
- Usually available in 7/8”, 1-3/8” and 2” diameters.
- Extra-wide rods are available in 4-1/2” and 2-1/2” sizes and are inserted into fabric headings of 5” or 3”, providing a stationary look.
- These can be used for valances or for a combination with two or three rods to give a cornice look.
Drapery Accessories
- Rings must be 1/4” larger in diameter than the rod for free movement. Some have eyelets for insertion of a drapery hook.
- Ring Clips are oval or round. When pressed on the sides, the prongs open. When pressure is released, the prongs grasp the top of the drapery.
- The Slip-On Hook fits over a rod or into an eyelet on the rod. The drapery heading fits between the two close-facing shanks on the opposite side of the hook.
- The Pin-On Hook works the same way except that the drapery heading is hooked into the sharp pin, which is opposite to the side that hangs on the rod.
- The Pleater Hook is used with pleater tape sewn to the drapery heading. Three or four prongs, or shanks, form pleats when the heading is placed onto the shanks.
- Swagholders make decorative window treatments with ordinary fabric by draping and forming poufs, rosettes, bishop’s sleeves and festoons.
- Fasteners for draperies include hollow wall screw anchors, toggles and plastic anchors. These work well in drywall, plaster walls, concrete blocks and other masonry materials.
Mailbox
- One type is made for mounting on a post (typically in rural areas), the other is for mounting on a house (typically in town).
- Rural mailboxes are medium or large size, usually made of heavy galvanized or painted steel, aluminum or plastic. Since they will be exposed to the elements, they must be able to resist the weather.
- You may need a mounting pole for rural mailboxes. Wrought iron posts are attractive and last a long time. Wooden posts should be treated if they are to last a long time.
- Suggest enamel plates and stick-on letters for street names and numbers. Large 4” high numbers make it easy to identify a house at night.
Shelf Standard
- Pre-slotted metal strips attached to the wall, preferably into wall studs.
- Can be attached with toggle bolts or similar fasteners approximately 16” apart.
- If the standards are further than 16” apart, the shelves may not support heavy loads.
- A newer variation includes a mounting rail that is fastened across the studs. The standard then clips directly into the rail or may require an adapter. Usually requires a fastener at the bottom for stability.
Shelf Bracket
- Fits into the slots on shelf standards and supports shelves. Some types mount directly onto the wall.
- A flexible storage system can be built with standards and brackets that are easily removed and repositioned by pushing up and lifting out.
- Can be mounted in cabinets, closets or bookcases.
- One type is used with invisible shelving systems, which offers ways to put shelving into living areas. These systems mount brackets directly on the walls to support wood or glass shelving. They are not suggested for heavy support jobs.
- Another form of standard is the Z bracket. It is frequently used for utility shelving in basements or garages. It offers more support than other types and is less expensive.
- Floor-to-ceiling standards can be used to create room dividers.
- These pieces are usually double-slotted and come in lengths ranging from 7’6” to 12’.
Picture Hanger
- Nail Hangers consist of a piece of metal with a hook on the lower end of a twist and loop that forms a nail hole. Depending on the size, this type will hold from 10 lbs. to 100 lbs.
- Adhesive Hanger is a piece of flat metal with cuts or serrations along either edge that attaches to the back of a picture frame. The strip will stick to any clean, flat surface like glass, wood or metal. For light-duty use only.
- Adjustable Hanger is a piece of flat metal with cuts or “serrations” along either edge that attaches to the back of a picture frame. Serrations allow for adjustment. For light-duty use only.
- Utility Hanger is a hook that has an eye drilled into the flat upper piece for nailing or screwing to the wall. For light to medium use.
- Hook Anchor is made of polypropylene and can be used in hollow or solid walls. For light to medium use. It will hold mirrors and pictures.
- Hardwall Hanger is a plastic hook with case-hardened pins that can drive into brick or concrete walls to hold light- to medium-weight mirrors and pictures.
- Flush Mount Hanger has two pieces of formed metal. One piece mounts to the picture and the other to the wall. These pieces interlock to create a high-load system.
Cable Tie
- One-piece bands with self-locking catches or heads on one end.
- Available in different widths and lengths to accommodate various bundle diameter sizes.
- Used on anything that needs to be tied up, tied down or held in place.
- Natural, colored and fluorescent ties are used indoors while UV (sunlight resistant) black ties are used outdoors.
- Mounting bases can be used with standard cable ties to fix wire bundles to support structures or other surfaces. Bases are adhesive-backed for quick anchoring and contain molded knockout screw holes for extra power.
- Use cable tie tools to make the use of cable ties easier.
Support Hardware
- Includes metal plates and braces specifically designed for use as reinforcement in a variety of applications.
- Available in an assortment of sizes, shapes and finishes.
- Specific items include t-plates, corner braces, mending plates, triple corner braces and chair leg braces.
- Can be packaged with or without mounting hardware.
Braided Cord
- May be made with or without a center filling (core) that gives it strength.
- Diamond braid cord, also known as maypole braid, does not have a core and is frequently used for drapery cord or Venetian blind cord or as low-cost clothesline. It splices easily.
- Solid braid cord is firm, round and tightly woven so it will not unravel when cut or torn. Works well over pulleys and has good abrasion resistance.
- Double braid is when both the rope and the core are braided. It is the strongest and most expensive type of rope.
Polypropylene Rope
- A twisted rope that is less expensive than other rope fibers, making it a good all-purpose rope.
- Floats and is easy to produce in colors, making it good for water use.
- Low melting point, so it is not a good choice for using on pulleys where friction may melt the outer jacket.
- Resists rot and mildew.
- Not as strong as polyester or nylon, but three times stronger than manila.
Nylon Rope
- A twisted rope that is the most versatile of all because of its strength.
- Good shock resistance.
- Good abrasion resistance.
- Lasts five times longer than natural fibers.
- Resists chemicals and will not rot or mold.
- When stretched, has a tendency to return to its original shape.
- Do not use on winches or bits or attached to hooks or chain.
Twine
- Made by twisting yarns together to make a single, continuous strand.
- Low cost rope.
- Not recommended for reuse.
- Use for wrapping a roast, tying packages or establishing a line in the garden.
- The more plies, the stronger the twine. A 16-ply #8 thread cotton twine is twice as strong as an 8-ply #8 thread twine.
Twist Link Welded Chain
- Has links twisted at uniform angles. The slight twist in the links tends to make the chain more flexible and prevents the entire chain from twisting and knotting during use.
- One type is the coil chain, which has long lengths.
- Another type is machine chain, which has shorter links than the coil chain.
Hardware Cloth
- Has numerous uses, including attic ventilation, foundation vents, security screens and protective panels for screen doors.
- Available in galvanized steel or aluminum.
- Typical meshes are 2×2, 3×3, 4×4 and 8×8. Common widths are from 24” to 48” in 100’ rolls.
- Also available in plastic, where typical mesh sizes range from 1/8×1/8 to 1×1. Plastic has no sharp edges, will not rust, rot or corrode and is available in dark green and crystal colors.