Cadmium Plated Steel
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AN5H21A Airframe Bolt
The AN5H21A Airframe Bolt features Cadmium Plated Steel and has a 5/16-24 thread with a 5/16” shank diameter. All sizes of AN5H bolts have a 0.531 inch thread length, regardless of grip length. This thread length has been carefully calculated to accommodate a full-height nut plus one AN960-516 washer. The threaded end of the AN5H21A Airframe Bolt is tapered, to allow easier starting of the nut. The AN5H21A Airframe Bolt is tapered on the last threads, for ease of installation of the nut. The AN5H21A Airframe Bolt has a tensile strength of 125,000 . If the AN5H AN5H21A Airframe Bolt is overstressed, it will bend first rather than snapping.