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The APPLETON BL-400 is a conduit locknut with a trade size of 4 inches, a diameter of 5.44 inches, and a thickness of 0.38 inches. Constructed of steel, it features threaded installation and is approved to UL 514B and CSA C22.2 standards. It conforms to NEMA FB-1 standards and is used to secure an ordinary nut from working loose.
The APPLETON BL-400 locknut is ideal for use with rigid/IMC conduit.
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