AN8H Bolts -- Drilled Head
AN8H bolts have a 1/2-20 thread with a 1/2" shank diameter. All AN8H bolts have a 0.680 inch thread length. This length is specifically designed to accommodate a full-height nut plus one AN960-816 washer. The AN8H bolt head is predrilled for safety wire.
A or no A? AN bolts were originally designed to be used with a castle nut and cotter pin, so the base part number indicates a drilled shank. The addition of an "A" at the end (for example, AN8H-20A) indicates a drilled head and an undrilled shank for use with a self-locking nut.
AN bolt nomenclature can be confusing. Please take a look at our page on Identifying AN Bolt Sizes.
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