What is the best type of screw/screwdriver - phillips or flat? Why? Philips is better because the cross holds the screwdriver in place....
Philips is better because the cross holds the screwdriver in place. Any other reason?
Philips head is far better than the weak slot head ,the design of the philips manager gives more surface nouns contact with the screw driver and is much easier putting them contained by using a power or battrey drill
If you are using the slot head screw and you are using an incorrect fitting screwdriver chances are you will overexploit the slot and you will have difficulty going any further
Given a choice between a flat and phillips screw, I would choose the phillips because it is easier to fit the driver into the phillips go before.
Given free rein to pick my favorite screw head, I would choose the square drive. It have all of the apposite points of a phillips head, you can put more torque on it and it doesn't cam out of the slots are slickly.
Answers: Given the choice between Phillips and slotted, I would chose square drive (Robertson). Reasons:
They won't cam out. Phillips were designed to do this so they wouldn't be overtightened
They will stick on the train of a screwdriver, making it easy to start surrounded by hard to manage places with one mitt.
They are generally individual available in better ability screws. I digit a stripped heat costs me 1/2 hour of time. I'd a bit spend the additional 1 - 2 cents per screw and never enjoy this problem.
It keeps the riff-raff out. If someone doesn't hold a square driver, they don't know what they're doing and you don't want them messing with your stuff.
I was so frustrated beside phillips and flat head that I researched the integral problem and discovered square head screw.
They are designed with NEGATIVE CAMBER which channel that the bottom of the hole is bigger than the top. When Henry Ford was building his Model T, he discovered square pave the way screws across the border within Canada made by Robertson ,his production increased dramatically.
Green handle for 4-6 principal
Red handle for 8-10 principal
Black handle for 12- 14 person in charge
Interesting story, I fitted a new toilet to a house and used No.12 brass screw to secure the jar.
A month later the guy phoned me to right to be heard that the toilet had a hairline crack, I go to the house and discovered that yes there be a crack and new vinyl flooring.
The householder said I want you to replace the toilet as you cracked it, I retorted how did the vinyl layer get the vinyl below the toilet? they probably slid it under, he said. Which finances they undid the screw, he blushed, and I left
I used square leader brass screws therafter, and never have a repeat performance.
They are so biddable, that when I was fitting radiator brackets
to hoary plastered walls in the nintees, I have to be careful not to overtighten them , as the torque be so great that it would have be possible to bend the brackets into the plaster.
When I was a boy going to college in the period of war, the Belfast Corporation bought buses from Canada which had wooden-slat spaces, these were adjectives screwed down with square commander screws, and us boys have no way of removing them, so they be good as surety screws as resourcefully.
I notice that within N.Ireland , that all electricians, skylight blind fitters. plumbers/central heating engineers, the gas board and the local Electricity board use nought else.
There are many other types of screw similar, but better than phillips.
I use Reisser screws mostly because they are made from hardened steel, are lubricated and enjoy a thread designed for fast fixing next to slots to minimise splitting.
They are also self countersinking and do not require a pilot hole in most applications. They thread is also designed to grip chip-board and other bit boards as well as strong and softwood.