How to Install Screws and Anchors in Walls

The lighter objects can be hung between studs. but to hang or hold a heavy object into a wall (usually called drywall, or gypsum wallboard), It is necessary to screw into the framing stud behind the drywall or plaster, or use a screw hollow wall anchor or heavy duty concrete anchors.

he drywall (gypsum wallboard) is not strong enough to hold a screw to hang something from your wall or ceiling, and plaster is too hard and brittle to accept screw threads without crumbling.

The following is a practically tips of installation for screws and anchors in walls.

Prepared Materials and tools:
Measuring tape
Screwdriver (screw driver)
Pencil
Electrical Drill driver and bit (for sleeve anchor)
Hammer (optional)
Appropriate anchors, screws and studs

Install a Self Drilling Anchor
Use self drilling anchors in gypsum wallboard 3/8 to 5/8 inch thick for light to medium loads, such as a shelf bracket or towel bar on a wall.

Slot head has a single slot, and is driven by a flat-bladed screwdriver. The slotted screw is common in woodworking applications, but is not often seen in applications where a power driver would be used, due to the tendency of a power driver to slip out of the head and potentially damage the surrounding material.

(a) Slotted, (b) Phillips, (c) Pozidriv, (d) Torx, (e) Hex
(f) Robertson, (g) Tri-Wing, (h) Torq-Set, (i) Spanner

Cross-head, cross-point or Phillips screw has a "+"-shaped slot and is driven by a cross-head screwdriver, designed originally for use with mechanical screwing machines. The Phillips screw drive has slightly rounded corners in the tool recess, and was designed so the driver will slip out, or cam out, under strain to prevent over-tightening. The Phillips Screw Company was founded in Oregon in 1933 by Henry F. Phillips, who bought the design from J. P. Thompson. Phillips was unable to manufacture the design, so he passed the patent to the American Screw Company, who were the first to manufacture it.

Pozidriv is patented, similar to cross-head but designed not to slip, or cam out. It has four additional points of contact, and does not have the rounded corners that the Phillips screw drive has. Phillips screwdrivers will usually work in Pozidriv screws, but Pozidriv screwdrivers are likely to slip or tear out the screw head when used in Phillips screws. Pozidriv was jointly patented by the Phillips Screw Company and American Screw Company.

Torx is a star-shaped or splined bit with six rounded points. These were found in early Apple Macintosh computers, to discourage home repairs. A "tamper-proof" type of Torx head has a small pin inside the socket.

Hexagonal or hex screw head has a hexagonal hole and is driven by a hexagonal wrench, sometimes called an Allen key, or by a power tool with a hexagonal bit.

Robertson head has a square hole and is driven by a special power-tool bit or screwdriver. The screw is designed to maximize torque transferred from the driver, and will not slip, or cam out. It is possible to hold a Robertson screw on a driver bit horizontally or even pendant, due to a slight wedge fit. Commonly found in Canada in carpentry and woodworking applications and in Canadian-manufactured electrical wiring items such as receptacles and switch boxes.

square-drive head is an American clone of the Robertson that has a square hole without taper. Due to the lack of taper, the hole must oversize relative to the screwdriver, and is much more likely to strip than the Robertson.

Tri-Wing screws have a triangular slotted configuration. They are for instance used by Nintendo on its Game Boys to discourage home repair.
Torq-Set is an uncommon screw drive that may be confused with Phillips; however, the four legs of the contact area are offset in this drive type.

Spanner drive uses two round holes opposite each other, and is designed to prevent tampering. Commonly seen in elevators in the United States.

There are three main types of screw drivers: standard, which has a straight, flat blade; Phillips, which has a tip that looks like a plus sign; and square-tipped, which is used for recessed screws that have a square hole in the head. Several variations of these exist - choose the best one for your comfort and safety. Here are some guidelines.

Choose Steps:

1. Match the screw driver to the screw head.

2. Don't assume that all cross-head screws are for Phillips screw drivers. A Phillips will slip out of a screw designed for a Pozidriv screw driver, which has a slightly flatter tip.

3. Drive hex-head screws with nut drivers.

4. Do fine work, such as on eyeglasses and computer equipment, with a set of jewelers screw drivers.

5. Find screw drivers with contoured handles that are at least 5 inches long and that fit the shank tightly. Handles without finger grooves are the most comfortable.

6. Try an offset or a stubby screw driver in close quarters where a normal screw driver won't fit.

7. Get a ratcheting screw driver or an electric screw driver to prevent repetitive motion injuries.

8. Use a screw driver that has the same blade tip width as the screw head and fits in the slot tightly.

9. Look for screw drivers with black oxide tips, which improve control.

10. Use a screw holder or a magnetic screw driver to start screws in awkward or hard-to-reach places.

Store Tips:
Store your screw drivers in a rack or pouch that leaves the tips exposed; this way you can find the proper screw driver quickly.

Warnings:
Keep in mind that rubber handles on screw drivers are for comfort and grip. They aren't designed to protect the user from electrical shock. If you must work on live electrical equipment, be sure that your screw driver has an insulated handle and a nonconducting shaft.

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Tell you how to install screws and anchors in walls

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Screws Anchors

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