How To Measure A Titanium Screw And Titanium Bolt
For precision titanium fasteners measuring, we would recommend the use of Digital Vernier Callipers and a Thread Gauge to measure thread pitch.
MEASURING A TITANIUM FASTENER
Also called Major diameter. The diameter of a titanium bolt is the Shank diameter, expressed in millimetres for Metric titanium bolts. Because this is approximately the same as the Major or Thread diameter, the thread diameter measurement can be used for fully threaded titanium bolts.
Titanium fastener length is measured from where the material surface is assumed to be, to the end of the titanium fastener. For titanium fasteners where the head usually sits above the surface, the measurement is from directly under the head to the end of the titanium fastener. For titanium fasteners that are designed to be countersunk, the measurement is made from the point on the head where the surface of the material is, to the end of the titanium fastener.
Metric titanium fasteners are specified with a thread pitch instead of a thread count. The thread pitch is the distance between threads expressed in millimeters (measured along the length of the titanium fastener). For example a thread pitch of 1.5 means that the distance between one thread and the next is 1.5mm. In general smaller titanium fasteners have finer thread so they have lower thread pitch.