Some purchases in the different screw screw length size measurement aspects are not very knowledgeable, but they are in the procurement of screws and must know.Today this screw length size measurement of the professionalism of the basic questions by the editor to answer for you.Different screw length measurement aspects have different measurement standards and regulations.Must be implemented in accordance with the measurement standards of the screw industry.

Screw length measurement: such as cross slot pan head screws, hexagon head bolts, hexagon socket head screws, bevel head screws, self-tapping screws with pads, flat screws, etc., the length of its diameter measurement method is a direct measurement of the length of the screw thread diameter, excluding the head of the screw, that is to say, the measurement, the amount of calipers do not need to include the head of the screw measurement.Measure the length of the screw thread diameter can be.

Like cross recessed countersunk head screws, it is also called countersunk head screws, flat head screws, this type of screw length size measurement and other screws are different.It is more special, its measurement length size standard is the diameter including screw head measurement.The method is to use calipers, from the head of the countersunk head screw to the end of the screw threads in a straight line down.That is, the entire length of the screw size is its length.

Of course, no matter what we measure the length of the screw size has a standard, this standard is the national standard size of our screw industry.In the process of measuring the length of the screw size, we have to use the measuring tool calipers, micrometers and so on.And in this measurement process, there will certainly be errors, then how to do?This requires us to measure several times, and then take the average.It is best to have a professional screw quality personnel to go to the length of the screw screw size measurement!