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MIL-PRF-907 is a United States military performance specification that covers the requirements for a high-temperature anti-seize thread compound (paste).
This compound (formerly MIL-A-907) is designed to prevent seizing, galling, corrosion welding, and hydrogen embrittlement on threaded components and mating metal surfaces, ensuring that fasteners can be reliably assembled and easily disassembled, even after long-term exposure to high heat.
The compound consists of a semi-solid paste often formulated with metallic solids (such as lead, copper, or nickel particles) dispersed in a petroleum or synthetic vehicle. Key characteristics and applications include:
The product is essential for maintenance in heavy industrial equipment, aircraft, steam/gas turbines, refinery units, and boilers.
The latest revisions of the MIL-PRF-907 specification cover the requirements for up to three types of anti-seize compound, though the core requirement remains focused on high-temperature anti-seize performance.
There is no dedicated NATO Code assigned to this specification.
MIL-PRF-907 is related to other key thread compounds but is typically cited directly for the required high-temperature, steel-thread performance:
These products either meet or are approved to the MIL-PRF-907 specification. Please consult the product page and product description for the specific type/size you intend to purchase to ensure it will be supplied with MIL-PRF-907 paperwork.
