Pure Molybdenum fasteners have excellent heat resistance, with their melting point  being at 2,623 degrees C. Useful for heat resistant devices such as sputtering equipment and high temperature furnaces. Available in sizes M3-M10. 
Manhar Metal has a long track record of producing top of the line, customizable molybdenum fasteners at competitive prices. 
Molybdenum screws are produced for high temperature vacuum environments. We produce three head types (fillister, pan & flat) in both ANSI and metric sizes. We stock these refractory screws in standard lengths, but can also produce custom lengths and custom features. Please take note of the sketch provided for screw specs.
Molybdenum refractory washers are available in both inch and metric sizes. Washers help to distribute the load of a threaded fastener. All standard sizes are available. We can also produce custom sizes.