This guide helps one to be able to cross reference fasteners specifications from metric to standard (imperial) in order to buy appropriate items.
Cross-referencing fastener specifications and sizes from metric to standard (imperial) systems can be a bit tricky, but with a bit of understanding and the right tools, it's possible to place an order correctly with Allfasteners or any other supplier. Here's a step-by-step guide to help you:
- Identify the fastener type: First, you need to know the type of fastener you're looking for, such as screws, bolts, nuts, or washers.
- Determine the metric specifications: Write down the metric specifications of the fastener, which usually include diameter (M), thread pitch (P), and length (L). For example, an M8 x 1.25 x 40 bolt has an 8mm diameter, 1.25mm thread pitch, and is 40mm long.
- Convert metric to standard: To convert the metric specifications to standard (imperial) units, you'll need to use a conversion factor. One inch equals 25.4 millimeters, so you can use this ratio to convert the measurements:
- Diameter (inches) = Diameter (mm) / 25.4
- Thread pitch (threads per inch or TPI) = 25.4 / Thread pitch (mm)
- Length (inches) = Length (mm) / 25.4
- Find the closest standard fastener size: After converting the metric specifications to standard units, look for the closest standard fastener size. Standard sizes are typically represented in fractions (e.g., 1/4", 3/8", 1/2", etc.) for diameter and length, and a whole number for TPI.
- Check for available fasteners: Once you have the standard fastener size, search the Allfasteners catalog or website for the fastener type and standard size you require. If you cannot find an exact match, you may need to compromise on the closest available size, or contact Allfasteners for a custom order.
- Verify other specifications: Make sure to check other specifications, such as material, grade, finish, and head type, to ensure you're ordering the appropriate fastener for your application.
- Place your order: Once you've confirmed the fastener specifications and found a suitable match, you can place your order with Allfasteners. Make sure to double-check the quantities, shipping information, and any other relevant details before submitting your order.
By following these steps, you can successfully cross-reference metric and standard fastener sizes and order the correct item for your needs.