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The Countersunk Mega-Coupler replaces the standard hex head bolt with a flat head bolt. Unless ordered without hardware, all Mega-Couplers come with a Belleville washer and a Nylock Nut for attaching the load.
The Countersunk Mega-Coupler comes with a 1/2" or 3/8" flat head base and comes standard with a heavy duty wing nut developed by The Light Source. As optional configurations, Mega-Couplers can be purchased with steel wing nuts or with nylock nuts as part of the bolt assembly.
For metric requirements, the M10 and M12 flat head bolt is available as well.
