What are screwdriver bits called?

Hex Head or Allen Screwdriver Bits



Hex head bits or Allen bits have 6 flat sides and the screws or bolts that go with them are very common.

Are all screwdriver bits the same size?





The shank size will often be stamped across the side of the bit on some models. Most screwdriver bits have a shank diameter of ¼ inch (6.35mm). This means they can be used in tools with a ¼ inch chuck size. Now you know your chuck size you can pick a screwdriver bit with the correct size shank diameter.

What is the best screwdriver bit?

Screwdriver bit comparison

Bit type Abbreviation Material for intensive use
Phillips PH Diamond, Zirconium, High Chrome Vanadium Steel, Titanium
Pozidriv PZ
Torx T
Resistorx (or tamperproof Torx) TT

What is the most common screwdriver bit size?

#2

The most common sizes are #2 and #1, #2 for standard screw sizes, #1 for “miniature”. Then there are the jeweler-size screws. With slot head screwdrivers it’s even simpler, the blades are measured in fractions of an inch.

What is the smallest size screwdriver?





The Phillips #000 screw is the smallest fastener in the Phillips family and is used in the most compact electronic applications. This particular size of Phillips screwdriver blade is also known as Phillips 000, PH 000, and PH #000.

How do I get a screwdriver bit?

Choose the bit size that fills the screw head entirely. A bit that is too big or too small will not seat properly, and you’ll end up with a stripped screw.

What size are screw bits?

They come in three main sizes – 1/4”, 5/16”, and 3/8. Sometimes these sizes will be slightly small for the screw at hand. In this case, the nutsetter you require may be in metric (i.e. instead of a 3/8” (9.38mm) nutsetter, you may need a 10mm).

Can I use screwdriver bits in a drill?

Quote from the video:
Quote from Youtube video: Absolutely no problem at all. If you wish to try and use the PZ 2 bits in there it will actually fit but it's not a good fit.

What size is a red Robertson?



Red Robertson screwdriver functions with screw types 8, 9, and 10 and has a recess size range of 3.34 to 3.38 mm.

What is the difference between a Robertson and a Phillips screwdriver?

Phillips heads have a cross-shaped tool indent. Hex socket screws require an Allen wrench, while hex screws are entirely hexagonal without an indent for a tool, meaning it needs a wrench or socket wrench. Square indentations are also known as Robertson screw heads and require a special driving tool.

What is the most common size Robertson screwdriver?

The medium-size that’s most common is red; anyone who calls this a “#2 Robertson” deserves arched eyebrows and a thorough looking-down-on. Black is the largest size, with green being smaller; yellow and orange are smaller still but much less common.

What does a Robertson screwdriver look like?



A Robertson screw, also known as a square or Scrulox screw drive, is specified as ANSI Type III Square Center and has a square-shaped socket in the screw head and a square protrusion on the tool. Both the tool and the socket have a slight taper.

Why are there no Robertson screws in America?

Most historians attribute its lack of popularity in the United States to Henry Ford. Having been nearly bankrupted by shady European licensees, Robertson refused to license his invention to Ford. Without a guaranteed supply, Ford turned to the Phillips-head screw, cementing its reign in American industry.

How do you unscrew a square screw without a screwdriver?

Extracting Single-Slot Screws

  1. A kitchen knife. Choose one with a rounded tip, such as a butter knife. …
  2. A coin — preferably a dime, which is thin enough to fit in most screw slots. …
  3. A credit card. …
  4. A rubber band. …
  5. A chisel, which does an even better job of turning single-slot screws than a flat-head screwdriver.


What is a Robinson screwdriver?



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.

How do you unscrew a Robertson screw?

Quote from the video:
Quote from Youtube video: Which you hit with a hammer. And you can put various heads on it this is the only one i have. And then hit it with a hammer.

What is Philip screwdriver?

Definition of Phillips screwdriver



: a screwdriver that is designed to be used with a type of screw (called a Phillips-head screw) that has a slot in its top that looks like a cross.

Why is it called a Robertson screwdriver?

Peter frequently told the story- now a legend – about the accident in downtown Montréal. 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.

What is flathead screwdriver?



A “slotted flat blade screwdriver” is a long standard hand-tool dating back to the 1500s. It has a flat-bladed tip used to turn, fasten or loosen screws and bolts. The flat blade screwdriver is an extremely versatile tool and is used for fasteners of all sizes, providing significant leverage.

What is a stubby screwdriver?

A stubby screwdriver is a tool used to facilitate access to screws located in areas that cannot be reached easily by a regular screwdriver. Sometimes, screws exist in places that are not wide open and may have something blocking access to them from the opposite side.