These custom steel T-bolts were manufactured domestically using medium carbon steel material with zinc clear finish.  8-32 thread was incorporated at a length of 3/4″ underneath the head.  The head height is set to .04″, head width across the flats at .32″, and the width across the rounded sides at .438″ +/-.015″ max.  Lead time for mass production of a similar part is typically 8-10 weeks from order confirmation.