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The Malleable 521-400 is a cap fitting made from malleable iron. It follows ASTM A197 material specifications. This fitting has a female threaded end connection with a nominal size of one eighth inch. The black finish and round head design make it suitable for a variety of applications.
This cap is ideal for plumbing, OEM, oil, gas, fluid, and steam applications, ensuring reliable performance in diverse environments.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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