What is slotted 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.
Who invented the slotted screwdriver?
The first industrial process for making screws was developed in England in the 1760s but it was Cullen Whipple of Providence, RI, who invented the automated method of cutting screws in 1842. From the beginning the slotted head, driven by the flat-bladed driver, was the standard.
What is the classification of slotted screwdriver?
A screwdriver is classified by its tip, which is shaped to fit the driving surfaces—slots, grooves, recesses, etc….Screwdriver.
|A slotted or “flat-blade” screwdriver
|See List of screw drives
|Hex key Wrench
What are slotted heads?
A screw fastener with a single groove across the diameter of the head. One wouldn’t use a Phillips screwdriver on a slotted-head screw.
Why are there two types of screwdrivers?
The reason for the different styles is cost and torque. Phillips screws are self-centering, making powered screwdrivers possible. They’re somewhat more expensive to produce than slotted-head. They tend to ‘cam-out’ easily under torque, making it hard to apply much torque.
What is the disadvantage of a Phillips screwdriver?
One of these drawbacks was the tendency of slotted drivers to over-torque a screw. The Phillips screwdriver was designed to purposely pull-away or “cam-out” when the torque becomes too great. This prevents the screw head from snapping off and also allows the operator to know when the screw is fully seated.
Why do we still use Phillips screws?
Why do we still use Phillips screws? Philips head are specifically designed so you can’t over torque them, that’s why. The screwdriver slipping out is the design working properly. We use Phillips specifically so that the screw can’t be over-torqued.
Why are there 2 types of screwdrivers?
What are the three types of screwdrivers?
Types of Screwdrivers
- Phillips Screwdriver. Also known as cross-head screwdrivers, Phillips screwdrivers are one of the most common types.
- Torx or Star Screwdriver.
- Insulated Screwdrivers.
- Torque Screwdrivers.
- Flathead Screwdriver.
- Tri-Wing Screwdriver.
- Pozidriv Screwdriver.
- Hex Screwdriver.
Why do slotted screws still exist?
Flat head screws are good for wood as they prevent overtightening and thus help prevent stripping….Why do things still use flat head screws?!
|OhmHazzard Ars Legatus Legionis Registered: Dec 25, 1999 Posts: 10277
|Posted: Sat Feb 05, 2005 9:46 pm
|Robertson > Philllips