These are custom V bolts we had manufactured domestically for our automotive customer.  A36 steel material was used with zinc yellow and bake finish process.  5/8-11 thread was incorporated on both legs, at 2 inches in length.  Center to center inside width was set at 4-1/2 inches, with the inside length set at 5.88 inches.  The inside angle at the V was set to 90 degrees.