Pentalobe Screwdriver information
In late 2010 Apple started shipping their iPhone 4 with a 0.8mm Pentalobe screw. Similar to Security Torx and Security TorxPlus, these screws were designed to keep unauthorized users from opening the device. It’s officially named “Pentalobular security screw” by Apple but others have called it 5 point Torx, or Security TorxPlus. The smallest size is #1, which Wiha calls P1 but is often referred to as TS1 or IPR1.
Several overseas companies have made a Pentalobe Screwdriver for the iPhone, MacBook and MacBook Air (first pentalobe used in 2009) but Wiha was the first to release a High Quality Pentalobe Screwdriver with U.S. distribution. In November of 2013 they released P1, P2, P3, P4, P5, P6 and a 6 piece set.
The P1 will work on the Apple iPhone. The P4 will work on the Macbook Air and MacBook Pro with Retina Display and the P5 is for the 2009 MacBook Pro.
Are TS1, T1S, IPR1, TR1, P1, 5 point Torx, TorxPlus and Pentalobe screwdrivers the same? The short answer is yes, if it has 5 lobes it’s basically the same.
What is the official name for bits and screwdrivers with 5 points? These drivers are currently going by many names.
5 point screwdrivers and bits have been around for many years but only recently in the very small sizes used by Apple.
5 point screwdrivers and bit sizes are most commonly referred to as TS or IPR in traditional sizes 8-50. An example is TS10 or IPR10 where TS or IPR designates the screw type (5 point) and the number designates the size. In the new smaller sizes, Wiha calls them P1 and others have continued to call them TS or IPR. Although sizes 1-6 have the same basic shape and 5 lobes as sizes 8-50, the smaller sizes (1-6) do not have the security hole drilled in the end of the bit or the screwdriver like the larger sizes(8-50).
5 point screwdrivers and bits all seem to use a profile that our German companies call TorxPlus. TorxPlus lobes are not as pointed as Torx . They have a larger contact area and a contact angle much closer to 90 degrees.
Regardless of what they are called, all 5 point pentalobe screwdrivers and bits seem to be constructed to the same specs.
The purpose of using 5 point pentalobe screws is to keep unauthorized users from removing the screw