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The GIBRALTAR 40406G is an equal double threaded stud designed for fastening applications that require threaded engagement on both ends of the fastener. Made from alloy steel with a black oxide finish, this stud measures 4 inches overall length with a 5/16-18 thread size on each end. The black oxide finish provides a degree of corrosion resistance and reduces light reflection on the fastener surface. Thread Fit Class 50 indicates a standard tolerance class suitable for general mechanical and structural fastening. This type of stud is commonly installed by millwrights, maintenance technicians, and mechanical contractors working on equipment assembly, machinery mounting, and structural connections.
Equal double threaded studs like the GIBRALTAR 40406G are used across industrial, mechanical, and light structural applications where a bolt-through configuration is not practical or where a fixed threaded anchor point is required on both ends. Typical install scenarios include machine component mounting, equipment panel attachment, and replacement fastener service. The equal thread configuration means both ends carry the same 5/16-18 thread, allowing interchangeable nut engagement on either end.
Designed as a general-purpose equal double threaded stud for use in mechanical, industrial, and maintenance applications requiring 5/16-18 threaded fastening on both ends.
Installation is typically performed by millwrights, mechanical technicians, or maintenance personnel using standard open-end or combination wrenches and appropriate thread locking methods. Ensure mating threads are clean and free of debris before installation. Apply thread engagement to the appropriate torque specification for Grade 5 alloy steel fasteners as outlined in your project engineering documentation. Power down and de-energize any equipment before performing fastener service on electrical or mechanical assemblies.
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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