Moly Bolts Ideal for High Temperature Vacuum

Q: Are Nimonic bolts a good choice for a high temperature vacuum environment?
A: That depends. Typically for extreme temperatures in a vacuum we recommend Molybdenum fasteners. Moly bolts have an extremely high melting point and can be used at much higher temperatures – close to 2900F –  ONLY when not exposed to oxygen. Nimonic fasteners can only be used to around 1800F.
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