he diameter of the bolt.
by using a caliperhttp://www.technologystudent.com/equip1/vernier3.htm
A diameter is a property of circular objects. "12 inches" is not a circular object and so cannot have a diameter.
Circumference = 37.7 inches Diameter = 12 inches
if the diameter 5/16 inches then you covert the 5/16 into 0.3125 inches. divide 5 by 16=0.3125 which is a little bigger than 0.3! ;)
The first technician is correct, it is a coarse thread. I'm not sure there is a bolt called 12-13 so I am assuming you meant 1/2 - 13. Wich would be a bolt 1/2 inches long. The diameter of a #13 unc bolt would be ( 13 x .013in ) + .06 = .229 inches in diameter.
This would be concidered the largest diameter,dimension of a bolt.
he diameter of the bolt.
The stress on a bolt under longitudinal force is the total force on the bolt divided by the stress area. The stress area is a little bigger than the minor diameter area, calculated from the average of the minor diameter and pitch diameter. The total force on the bolt is its torque preload plus the (bolt stiffness/(bolt +member stiffness) x (externally applied load )
On a five bolt pattern measure from outer edge of one bolt then across to the middle of another skipping one bolt hole( not quite the diameter). On six or four bolt patterns measure across from bolt center to bolt center as you would the diameter if it were a circle.
"M8" refers to the diameter of a metric bolt, where "M" stands for metric and "8" represents the diameter in millimeters. This measurement helps in selecting the correct size of nuts or washers to use with the bolt.
That refers to the size wrench necessary to tighten or loosen the bolt.
The wheel bolt diameter for a 2007 Toyota Tacoma is 12mm x 1.50.
The socket diameter of a bolt refers to the width of the opening in the head of the bolt for a socket or wrench to fit. It is typically determined by the size of the bolt and the type of socket needed for installation or removal. Common socket diameters for bolts range from 8mm to 24mm.
If a bolt is tightened past a certain point, it deforms by stretching, with the result that its diameter is reduced, if it is tightened past the elastic strain limit of the metal the reduction in diameter is permanent. This can often be seen afterwards in a reduced-diameter 'neck' in the shaft of the bolt where the highest stress occurred.
by using a caliperhttp://www.technologystudent.com/equip1/vernier3.htm
PCD (Pitch Circle Diameter) is the diameter of a circle that goes through each of the bolt holes. You can find it by measuring distance from centre of one bolt hole to the centre of opposite end bolt hole...