How our Screws are Measured
We understand the confusion people may have when looking at the different sizes of studs we offer, and we want to ensure you are getting the right size stud for your application. Below we have explained every part of the screw and how to know the exact dimensions they all are. If you have any further questions about size, dimensions, or inquiries on special applications, please call us at (708)-534-2897.
We measure our products from the tip of the screw to the underside of the washer (threaded portion only). That means when choosing a length, we do not include the height of the head and washer of the screw in our measurements. For a 1" screw, that means that from the tip of the screw to the underside of the washer, is 1" in length. On a 3/8" stud, the length from the tip of the screw to the underside of the washer is 3/8".
UNDERSIDE OF WASHER
BASE OF SCREW
The head heights of our screws are the deciding factor in what category a stud is in. Our AMA screws follow the AMA rules and have a height of .190 inches. Our Outlaw screws do not follow any head height regulations and measure at .290 (Canadian) and our indoor (Silver Rockets) have a height of .150.
The thread count for our screws is represented by the second number in the product name "Threads Per Inch (TPI). We currently offer screws with counts of 11 TPI, 14TPI, 16 TPI, 18 TPI, and 24 TPI. For example the AMA 8-18 has a thread count of 18 TPI. The Outlaw 12-11 has a count of 11 TPI.
The diameter of our screws represents the diameter of the body of the screw. We have 3 different diameters for our screws, #8, #10, and #12. The size refers to the SAE screw thread size. The diameter is represented by the first number in our product name, an AMA 8-18 screw has a diameter of 8 while a Outlaw 12-11 has a diameter of 12.