Craftsman,Stanley et cetera they all make a full range of Philips head drivers.
The different sizes of Phillips head screwdrivers available are typically numbered from 0 to 4, with 0 being the smallest and 4 being the largest.
Hex, or Allen screwdrivers are for screwing and unscrewing Allen head screws.
Flat head screwdrivers were the original screwdriver, possibly being invented around 1460. They were the only type of screwdriver until the early 20th century.
Screwdrivers are sized based on the width and shape of the screw head they are designed to fit. Factors that determine the size of a screwdriver include the type of screw head, the size of the screw, and the intended application.
Phillip suddenly loses his sight due to a head injury caused by flying debris during a storm. This makes Timothy feel even more responsible for him as he now needs even more care and support to survive on the island.
Slotted Phillips (cross shape) Torx (star burst) Robertson (square peg) Reid and Prince (thinner than a phillips) Awl Head (hexagonal)
There are more than two types, but the main categories are flat head and cross/star screwdrivers. Actually, there are four: flathead or standard, phillips head, hex or Allen head, or Torx or star head. Torx/star head and Allen/hex head fasters are more often than not bolts, differentiated from screws, but there are a number of different styles of actual screws that are manufactured for these two bits as well.
Mr.Cheese head
Head Coach - 2007 Phillip Fulmer 1-5 was released on: USA: 22 March 2007
Phillips head screwdrivers only work on Phillips head screws--which are ones with an "x" indentation on the head of the screw. A straight screwdriver works on screws with a single line indentation on the head of the screw.
Hex screwdrivers and Allen keys are designed to fit in Allen head screws,used a lot in machinery.
Phillip Hossler has written: 'Getting a-head of concussion' -- subject(s): Sports injuries, Concussion, Brain