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Captive nut - N7 series
Southco's N7 series is a product line dedicated in showcasing a variety of captive nuts that are suitable for a wide range of applications. These permanently retained nuts are engineered to feature a special concealed ejection-spring design and a hand-operable knurled knob that allows for the easy-alignment, a "pop-up" capability, and a solid grip once the nuts are fully installed. The N7 series is available in a grip-tolerant through-hole version and a more refined blind hole-version that allows threaded studs to either fully pass through the nut depth or to be contained within the nut body. Aside from these versions, there is also a choice between a nine metric and an imperial thread that accommodates to varying modes of installations.