Innovation Fasteners were called upon for a 5 day delivery to support an unplanned maintenance project for an oil refinery in Texas. 

The order was received on Tuesday and sent by a dedicated truck on Saturday morning. The studs were single point thread cut and the nuts were machined from round bar and milled into a hexagon.

ASTM A193 Grade B8C is a corrosion resistant grade 347 stainless steel, for use in high tensile, high temperature and special purpose applications such as pressure piping & pressure vessels. Type 347 stainless steel has slightly improved corrosion resistance over type 321 stainless steel in strongly oxidizing environments. Type 347 is stabilized with columbium, it is preferable for aqueous and low temperature environments due to its good resistance to intergranular attack. Both 347 and 321 offer good resistance to polythionic acid stress corrosion cracking, encountered in oil refineries. The high temperature oxidation resistance of 347 is similar to that of 304 stainless steel. Useful to 1500°F.