Sierra Pacific Engineering & Products (SPEP)

Bolingbrook, IL  |  800-433-5554

ISO certified manufacturer of hinges & industrial hardware. Quality, service and value are core to our success as an OEM supplier. SPEP offers a wide range of products, including: continuous, butt, spring, weld-on & lift off hinges. Same day shipping on most items. SPEP is a 100% ESOP.

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Hardware