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The slot or flat-headed screwdriver is probably the most common form of hand tool. It has a flattened tip used for screws with a straight linear intrusion across the head.
What is another name for flathead screwdriver?
The tool used to drive a slotted screw head is called a standard, common blade, flat-blade, slot-head, straight, flat, flat-tip, or “flat-head” screwdriver. This last usage can be confusing, because the term flat-head also describes a screw with a flat top, designed to install in a countersunk hole.
What is flat head screwdriver?
A flat-head screwdriver is a screwdriver with a wedge-shaped flat tip, used to tighten or loosen screws that have a straight, linear notch in their heads. Different screwdriver sizes are available to fit screws with different-sized slots in their heads.
What are the different types of screwdriver heads?
Types of Screwdriver. Flat Head (or Slotted Head) Screwdriver. Phillips Screwdriver. Pozidriv Screwdriver. Robertson or Square Screwdriver. Torx Screwdriver. Hex Screwdriver or Hexagon Screwdriver.
What are the 3 types of screwdrivers?
What are the Screwdriver Types? Flat Head or Slotted Screwdriver. This screwdriver type is probably the most common form of hand tool. Phillips Screwdriver. Torx or Star Screwdriver. Hex Screwdriver. Pozidriv Screwdriver. Robertson or Square Screwdriver. Tri Wing Screwdriver.
Why is it called Phillips head?
Henry Frank Phillips (June 4, 1889 – April 13, 1958) was an American businessman from Portland, Oregon. The Phillips-head (“crosshead”) screw and screwdriver are named after him. Thompson who, in 1932, patented (#1,908,080) a recessed cruciform screw and in 1933, a screwdriver for it.
What is a Robertson head screw?
4.81–4.85. A Robertson screw, also known as a square screw or Scrulox, is a type of screw with a square-shaped socket in the screw head and a corresponding square protrusion on the tool. Both the tool and socket have a slight taper.
What are Phillips screws?
Noun. 1. Phillips screw – a screw with a special head having crossed slots. screw – a fastener with a tapered threaded shank and a slotted head. trademark – a formally registered symbol identifying the manufacturer or distributor of a product.
What is the difference between flat head screwdriver and phillips head screwdriver?
A flathead has a single blade, and a Phillips has two blades in the shape of a cross. Attempts to use a flathead tool on a screw designed for a Phillips usually won’t be successful, and a Phillips screwdriver could never be used on a slotted screw. The flathead has been in use far longer than the Phillips.
What is the name of a star screwdriver?
Called Torx, 6 point, and star, Torx are a 6 pointed star shaped screwdriver. Originally designed in the 60’s to outperform hex screws, Torx is a trademarked name for a screwdriver that fits Torx screws, commonly seen in sizes Torx 6 to Torx 40 (or T6 to T40).
Why are there different types of screw heads?
Answer: The primary reason for the wide variety of screw head drive types is to ensure the fact that you will never have the proper screwdriver close at hand when you need it.
Which screwdriver is used for driving star headed screw?
Torx Key/Screwdriver Torx keys are similar to hex keys and have the same L-shape, except this tool has a six-point, star-shaped cross section. Torx screwdrivers provide a secure grip on the fastener head.
What are the types of screws?
Screw Types Wood Screws. Wood screws are used for basic wood construction and woodwork projects to attach wood to wood. Deck Screws. Deck screws are similar to wood screws with a few extra specificities. Drywall Screws. Masonry Screws. Sheet Metal Screws. Lag Bolts. Hex Bolts.
What are the five most common screwdriver types?
The five most common drive profiles are slotted, Phillips, Pozidriv, TORX® and hexagon. Slotted drives feature a simple slot as a host for the blade, however, they have a disadvantage of a lack of centring – making it easy for the tool to slip out of the screw.
Is there another name for a Phillips screwdriver?
Phillips Screwdriver Also known as cross-head screwdrivers, Phillips screwdrivers are one of the most common types. But what is a Phillips head screwdriver? These tools are designed to fit screws with Phillips heads, which have a cross-shaped recess – hence the alternative name of cross screwdriver.
Why is it called a Robertson screwdriver?
He was demonstrating a spring-loaded screwdriver when the blade slipped from the screw-slot and badly cut his hand. The incident inspired him, so he decided to invent an improved and safer screw – The Robertson® Drive. P.L Robertson always looked for a better way of doing things and enjoyed working on new innovations.
When did cross head screws come out?
To counteract these disadvantages, J. P. Thompson patented a screw with a cross recess in 1933. He sold the patent to the Phillips Screw Company. It improved the profile and introduced the screw to the market in 1936/37.
What is a quadrex screw?
The Phillips/square screw drive, also known as the Quadrex® or SPAX screw drive, is a combination of the Phillips and Robertson screw drives.
Why don t Americans use Robertson screws?
Because it sped up production with less chance of product damage, the manufacturing sector loved it, making Robertson’s screw an instant hit. Most historians attribute its lack of popularity in the United States to Henry Ford.
What are square head screws called?
What is a Robertson Screw or Robertson Head Screw? Most of us call Robertson screws “square drive” or “socket head” screws. They were invented by Canadian traveling salesman Peter Robertson around 1906. Check out this collection of tips on how to drive screws perfectly.
What is a hex screw?
Hex bolts, or hex cap screws, are large bolts with a six-sided head (hexagonal!) used to fasten wood to wood, or metal to wood.
