Gibraltar 40408G Double Threaded Stud 5/16-18 5 Inch

Product Description

The GIBRALTAR 40408G is an equal double threaded stud with a 5/16-18 thread size and an overall length of 5 inches. Constructed from alloy steel with a black oxide finish, this stud is built for strength and corrosion resistance in demanding mechanical and structural applications. The equal-length thread design provides balanced engagement on both ends, making it suitable for through-bolting, standoff mounting, and fastener assembly work in HVAC, plumbing, electrical enclosures, and general mechanical installations. Material Grade 5 and Thread Fit Class 50 designations confirm its suitability for moderate-to-high load applications.

This stud fits standard residential and light commercial mechanical applications where a double-ended fastener with equal thread engagement is required. It is commonly used by HVAC technicians, plumbers, electricians, and general maintenance professionals for panel mounting, equipment anchoring, and structural fastening tasks. The 5/16-18 UNC thread size is widely compatible with standard hardware and tooling across the trades.

Key Features

• Equal double threaded design provides balanced engagement on both ends for reliable through-bolt and standoff applications
• 5/16-18 UNC thread size matches standard trade hardware and fastener tooling
• Alloy steel construction with Material Grade 5 rating for moderate-to-high load performance
• Black oxide finish provides corrosion resistance and reduces light reflection in service environments
• Thread Fit Class 50 ensures consistent, reliable thread engagement
• 5-inch overall length suits a range of mounting depths and panel thicknesses

Compatibility

Designed as a general-purpose equal double threaded stud for use in mechanical, HVAC, plumbing, and electrical fastening applications requiring a 5/16-18 UNC thread and 5-inch overall length.

Installation Notes

Installation should be performed by a qualified technician using standard 5/16-18 compatible hardware, including hex nuts and washers. Ensure mating surfaces are clean and free of debris before threading to avoid cross-threading or reduced load capacity. De-energize and isolate any electrical or mechanical equipment before installing or removing fasteners in live panels or pressurized systems. Follow applicable mechanical codes and equipment manufacturer guidelines for torque and fastener engagement requirements.