How to calculate screw length

How to calculate screw length

Screws are one of the most common fasteners in fields such as machinery manufacturing, furniture installation, and electronic equipment repair. Proper calculation of screw length is crucial to ensure a strong and secure connection. This article will introduce the calculation method of screw length in detail, and combine it with the hot topics and hot content on the Internet in the past 10 days to provide you with a practical reference.

1. Basic concept of screw length

Screw length usually refers to the distance from the bottom surface of the screw head to the tip of the screw. Different types of screws (such as flat head screws, round head screws, countersunk head screws, etc.) have slightly different length calculations. The following are definitions of common screw lengths:

2. Calculation method of screw length

When calculating screw length, you need to consider the following factors:

1.Thickness of connector: The length of the screw should be at least equal to the total thickness of the parts being connected. For example, for two plates with thicknesses of 5mm and 3mm, the screw length should be at least 8mm.

2.Effective length of thread: The threaded part of the screw needs to completely pass through the connected parts to ensure the tightening effect. Generally, the effective length of the thread should account for more than 2/3 of the total length of the screw.

3.reserved length: In order to prevent the tip of the screw from protruding, it is recommended to reserve 1-2mm in length. For example, if the total thickness of the connected parts is 10mm, the screw length can be 12mm.

The following is a reference table for screw length calculation:

3. Hot topics related to screws in the past 10 days on the entire network

By analyzing the hot topics on the Internet in the past 10 days, we found the following hot topics related to screws:

1.DIY furniture installation: With the popularity of home DIY, many netizens share on social media how to correctly choose the length of screws to ensure the stability of furniture.

2.Screw selection in mechanical manufacturing: In the field of machinery manufacturing, the accurate calculation of screw length has become a hot topic of discussion, especially the strict requirements for screws in high-precision equipment.

3.Electronic equipment repair: During the repair of electronic equipment such as mobile phones and laptop computers, small differences in screw lengths may cause damage to the equipment, so it has attracted much attention.

4. Frequently Asked Questions

1.Q: Can the length of the screw be slightly shorter than the thickness of the connected part?
Answer: No. The length of the screw must be at least equal to the thickness of the connected part, otherwise it will not provide sufficient tightening force.

2.Q: How do I measure the length of existing screws?
A: Use a caliper or ruler to measure the distance from the bottom of the screw head to the tip.

3.Q: What are the consequences of choosing the wrong screw length?
Answer: If the screw is too short, the connection may not be strong, and if the screw is too long, it may damage the connected parts or affect the appearance.

5. Summary

Proper calculation of screw length is key to ensuring a strong and secure connection. Through the introduction of this article, you can choose the appropriate screw length according to the thickness of the connected parts, the effective length of the thread and the reserved length. At the same time, combined with hot topics across the Internet, understanding the applications and precautions of screws in different fields will help you better complete related tasks.