Flange Bolts
Flange bolts are identifiable by the ridge or skirt surrounding the bolt head. This skirt acts as a means of distributing the clamping load of the bolt across the fastening surface. A flange bolt is designed to provide the same holding power as a washer. When it comes to choosing the right type of flange bolt for your particular project, there are a few issues to be aware of.

Flange Bolts: Material Strength Issues
When it comes to flange bolts, or bolts of any kind, you have to remember that the plating of the bolt will play a large role in determining the maximum temperature it can withstand. This not only applies to conditions where extreme heat is present, but extreme cold as well. Engine conditions and extreme weather are areas where bolt plating has to be taken into account. Don't run into problems by choosing the wrong types of bolts. In colder conditions, carbon and alloy steel become brittle at temperatures below 65 degrees F. Hydrogen embrittlement can also be a problem. The bolt won't have any visible defects, but will be weakened due to temperature stress. A cadmium plated bolt is the best. The military uses cadmium plating in its fasteners and they can be somewhat costly. Zinc chromate is a less expensive alternative. Anodized aluminum and stainless steel will also resist corrosion, but only if you know you are buying from a reputable dealer. That's where the peace of mind found from buying your fasteners at NutsandBolts.com comes in. We have been in the fastener business for over 25 years, so you know you are buying from an experienced, reputable company. We will be happy to answer any questions you may have, no matter the project you're working on, and make recommendations based on your needs and price range. NutsandBolts.com is the best at what we do.
Copyright © 1996 - 2013 Northeast Fasteners Co., Inc.
Photographs are digitally encrypted for copyright protection.