xbf logoSpecial Fasteners China. & Fastener, LLC uses our trademarked “XBF” fastener marking on all custom made-to-order fastener products. When purchasing fasteners, look for the XBF fastener marking to ensure that you are using the highest quality fastener in the industry.

XBF Bolt Marking
In addition to being a US Government registered trademark, the XBF marking can also be found in the MIL-HNBK-57H, Department of Defense Handbook listing of fastener Manufacturer’s Identification Symbols.

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