I would opt for the standard green Wera screwdriver, its blade is not made of stainless steel. But regular toolsteel, wich is a lot tougher. So It will last longer, also its cheaper and they offer a much larger range of fasteners in that line 🙂

Also called BNAE NFL22-070 after its Bureau de normalisation de l'aéronautique et de l'espace standard number. A cross-head screw with a two-step driver design, with the blade diameter stepping up at a distance from the point. Line Head and Line Recess screw drives are Japanese systems with male, female and tamper-resistant configurations. [72] The Bad news: it’s not simple figuring those out, and trying one out is often the only really safe way to confirm eventually. Will do my best to explain it in this article.A cross or double-slot screw drive has two slots, oriented perpendicular to each other, in the fastener head; a slotted screwdriver is still used to drive just one of the slots. This type is usually found in cheaply-made roofing bolts and the like, where a thread of 5mm (0.20in) or above has a large flattened pan head. The advantage is that they provide some measure of redundancy: should one slot be deformed in service, the second may still be used. Tri-point-3 [ edit ] Oral-B rechargeable toothbrush, showing the TP3 headed screw used to hold the case together. When the rechargeable battery is no longer serviceable, the toothbrush case may be opened by removing this screw, allowing access to the battery and motor units for recycling. The wall adapter has a molded screwdriver on its case to facilitate this. Sometimes referred to as the star drive due to its rounded 6-point star shape, the Torx drive is designed to function at higher torques and have a longer lifespan than other popular screwdriver types. The Phillips screwdriver size is based on the size at the very tip. Based on diagrams of the tip from the original Phillips patent (shown in one of the links to sizes.com), I'm guessing that the relevant physical size is the cross you see when you point the screwdriver at your nose (as though it were a screw) and look at it end-on, or something directly related to that. How much the tip widens to become part of the shaft is irrelevant. You could make one that widens to a meter in diameter, making it nearly impossible for humans to use. Pozidriv screwdriver will fit any Supadrive screw and vice-versa. However, the Supadriv screwdriver, when used with a Supadriv screw, allows for using the screwdriver at a (slight) angle without risking it coming out when higher torque is applied.

For those who wish to go on to a university, it helps a lot. Giving them a sort of a preparation, to make things easier later on. Pozidriv and Phillips appear broadly interchangeable, but may cause damage if incorrectly used. Pozidriv screwdrivers will jam fit into Phillips screws, but when tightened they may slip or tear out the Phillips screw head. Conversely, while Phillips screwdrivers will loosely fit and turn Pozidriv screws, they will cam out if enough torque is applied, potentially damaging the screw head or screwdriver. [10] [23] Supadriv [ edit ] On paper, it differs a lot from Phillips, but in real life, people often confuse the two – which results in damaged screws that can no longer be unscrewed even using a matching screwdriver. Some consumer appliances, such as espresso machines from Jura Elektroapparate, use a proprietary screw head with an eccentric oval to dissuade owners from servicing their own machines.Tork-Nuts". Loss Prevention Fasteners. Ultra Fasteners Inc. Archived from the original on 2015-09-26 . Retrieved 2015-09-25. New Bolt Drives FCA to Better Seat Assembly". www.assemblymag.com. Archived from the original on 23 August 2019 . Retrieved 23 August 2019. Now that the original patents and licensing restrictions have begun to expire, Robertson screws are gaining in popularity worldwide. C) and (D) show tip cross-section when looking straight at the tip. Philips has a slightly larger radius (3), which prevents it from fitting properly into JIS screws. There are various types of drill bits available for different materials. Installer bits are designed specifically for installing wiring. The drill bit has a hole in the side which is used for feeding wiring through the drilled hole. This is a great option for specialized tasks. Conclusion