115 kr
It is a 7/16″ UNC that is 37mm long under the bolt head. It has a built-in washer and is made of a harder material than a regular standard bolt. The hardness is called grade 8 or 10.8 if we translate it to the European standard. The bolts are sold individually.
Note that you must measure the length of the screw under the skull, you measure the length in millimeters. You should not count on the screw head when measuring the length of the screw.
Check the picture how to measure.
The difference between UNC and UNF is the number of threads per inch.
UNF is fine-threaded with more threads per inch than the coarse-threaded UNC thread.
The smaller sizes are divided from 0 to 12 and are called numerical threads. We call them "Screws"
The larger sizes start with 1/4″ and so on. We call them "Bultar"
