With the electronic information industry is developing rapidly, electronic products are updated, and the assembly tools must be updated in time. New customers often ask us how to choose a right screwdriver bits. Sometimes customers give us a wrong specification of the screwdriver bits when they place orders. Hereby we popularize through this article about how to choose the right screwdriver bits for electric screwdrivers. Let’s take the international standard cross screwdriver head as an example.

screwdriver bits head types.1

Note:

F: represents the tail diameter of the screwdriver bits

L: represents the whole length of the screwdriver bits

d: represents the tip diameter of the screwdriver bits

l: represents the tip length of the screwdriver bits

E: represents the head type of the screwdriver bits

screwdriver bits head types.2

Step 1:

If you have an electric screwdriver, you need to buy a suitable screwdriver bits, please measure the tail diameter of your existing screwdriver bits(F size); if you don’t have a screwdriver bits, you can measure the interface diameter of the electric screwdriver. According to the specifications plugged into the interface of the electric screwdriver, there are sizes of Φ4(4mm) and Φ5(5mm) which the tail shape is round; there are also SH5(5mm) and SH1/4(6.35mm), which the tail shape is hexagon.

screwdriver bits head types.3

Step 2:

Measure the total length L from the head to the end of the screwdriver bits, or the total length L you need. If the entire screwdriver head is not of uniform diameter, please measure the tip length of the screwdriver bits, and measure the tip diameter of the screwdriver bits.

Step 3:

Check and measure the head type of the screwdriver bits(E size).The smaller the number, the sharper the tip shape. If you don’t have a screwdriver bits, you can measure the length of the screw groove according to the groove type of the screw groove. Commonly used screw groove types are convenient for measurement, such as slotted and phillips; if it is a special groove or difficult to measure, such as a special screw for an Apple mobile phone, you can send the screwdriver bits samples to screwdriver bits manufacturers, they can help select the model and make it strictly according to your requirements.

Conclusion:

According to all sizes that you measure, the model of screwdriver bits can express as:F-L-d-l-E(Tail diameter-Whole length-Tip diameter-Tip length-Head type)

If you don’t know how to confirm the screwdriver bits specifications, or if you have special screws that require a special customized screwdriver bits, please contact DasFormen customer service.

Write an email to sales@dasformen.com , we will assist you in selecting the type!