Buy Metric | Machine Screws

The major diameter of the thread in millimeters. An M6 screw is approximately 6mm wide.

Measure from under the head to the very tip. buy metric machine screws

The distance between thread peaks in millimeters. If this number is omitted (e.g., M6 x 20), it is assumed to be a coarse thread , which is the most common variety. 20 (Length): The length of the screw in millimeters. 2. Measuring Length Correctly The major diameter of the thread in millimeters

Metric screws are identified by a standard callout, such as . Each part of this code tells you exactly what you are buying: The distance between thread peaks in millimeters

One of the most common mistakes when buying screws is measuring from the wrong starting point.

Buying metric machine screws can be a daunting task if you don’t speak the "fastener language." Unlike wood screws that taper to a point, metric machine screws have uniform diameters and are designed to thread into pre-tapped holes or mating nuts. Whether you're a DIYer or an engineer, understanding the nuances of the metric system is essential for a secure, professional fit. 1. Decoding the "M" Designation