High temperature countersunk bolts 0.19-32UNJF-3A, to withstand approx 650ºC material INCO718, INCO625, A286, Waspalloy or similar. The bolt total length approx 16mm. The countersunk head type could be Star, Allen, or Torx 30 pcs. Please, there is avaible ( in stock or with a short lead time 10 weeks) some standard bolts with these caracteristics?