These are custom 316 stainless steel socket head cap screws at 10-32 X 1/2 and 10-32 X 3/8 in dimensions, manufactured domestically at a small batch of approximately 100 pieces. The parts were completed in a relatively quick turnaround time-frame of approximately 4 weeks from order, especially considering the holiday timing. To allow for the small quantity and speed the hex socket drive was broached instead of using a cold headed approach. You can see evidence of this at the inside of the recess drive where you would see machining marks instead of the typical clean concave interior seen in cold headed parts.
