| All standard bolts are measured from the end of the threads to the bottom of the bolt head. The bolt head makes no difference in general measurements. |
| Standard Bolts |
| Example: M8x30 Non-Taper Head |
| The example to the left shows an M8x30. 30mm does not include the head height. 8mm is the width of the shaft, NOT the size of the allen socket. |
| Example: M5x20 Countersunk |
| The example to the left shows an M5x20. 20mm includes the head height. 5mm is the width of the shaft, NOT the size of the allen socket. |
| Pitch |
| Here is a list of common thread pitches in my store: M4=0.7 M5=0.8 M6=1.0 M8=1.25 M10=1.5 All bolts are these pitches unless otherwise specified |
| The socket the bolt uses does not determine the bolt size |
| Countersunk Bolts |
| A fastener length is measured from where the material surface is assumed to be, to the end of the fastener. For fasteners where the head usually sits above the surface, the measurement is from directly under the head to the end of the fastener. Our button head and socket head cap screws are measured in this way. For 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 fastener. Our flat head screws are measured in this way. US Fasteners US Fasteners are described by the diameter, thread count (machine threads only) and length. The diameter and length are in inches with the exception of small screws whose diameter may be a size number (ex. 12). In this case the number will often have a # sign before it (ex. #12) Example: 1/4-20 x 6 This has a diameter of 1/4 inch, 20 threads per inch (course thread) and a length of 6 inches. Metric Fasteners Metric fasteners are described in a similar manner to US fasteners. However, instead of threads per inch, the metric system uses thread pitch (the length of each thread in millimeters measured along the shaft of the bolt). Typically the diameter of a metric bolt is preceded by a capital M to designate metric. Example: M10 x 1.5 x 20 This has a diameter of 10mm, a 1.5 thread pitch and measures 20mm long. |
| Click on the photos below for the measurements of Chainring bolts |
| Singles |
| Doubles |
| $5.00 Shipping |
| Measuring Tips and Weight |
| _______________________________________________ |
| Please note that a tracking number is extra cost and is very expensive overseas. Some orders take extra time so please be patient if a delay occurs. |
| Paypal, Credit Cards and Checks Accepted |
Orders ship for 5.00 via Air Mail
| We ship Worldwide. |
| All Prices are USD |
|
| Add Tracking to your Order: Canada = 8.00 USA = 12.00 International = 40.00 |
| Titanium is about 1/3 lighter than steel. Aluminium is 1/3 the weight of steel and ½ the weight of Titanium. Carbon is about ½ the weight of aluminium. |
| Weights |
| All standard bolts are measured from the end of the threads to the bottom of the bolt head. The bolt head makes no difference in general measurements. |
| Standard Bolts |