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The HILLMAN FASTENERS 540159 is a standard-design compression spring sold in a pack of 6. Compression springs resist compressive force along their axis, returning stored mechanical energy when the load is released. This spring uses a conventional open-coil geometry suited to a wide range of mechanical assemblies, HVAC equipment components, plumbing valves, and general trade applications. Constructed from durable steel, the 540159 delivers reliable spring action in environments where a straightforward, off-the-shelf compression spring is required. The pack of 6 makes it practical for stocking a service vehicle or parts room.
This compression spring is appropriate for residential and light commercial mechanical applications where a conventional coil spring is needed. Typical uses include valve assemblies, latch mechanisms, damper linkages, pump components, and similar hardware found across HVAC, plumbing, and general mechanical service work. No specialized tooling is required for installation, making this spring suitable for field use by licensed technicians and experienced service professionals alike.
Designed as a general-purpose OEM-style replacement compression spring for use in mechanical assemblies across HVAC, plumbing, and related trade applications where a standard compression spring of this size is specified.
Compression springs should be installed by qualified trade professionals familiar with the mechanical assembly being serviced. Always de-energize or depressurize the system before removing or installing spring components. Confirm that the replacement spring matches the free length, wire diameter, and load rating required by the original equipment specification before installation. Retain the poly bag for any unused springs to prevent corrosion from moisture exposure during storage.
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