Gibraltar ST1-40-G Double Threaded Stud 3/8-16 4 in

Product Description

The GIBRALTAR ST1-40-G is an equal double threaded stud with a 3/8-16 thread size and a 4-inch overall length. Machined from 1117 grade carbon steel and finished in black oxide, this stud provides left and right hand threading in an equal configuration, meaning both ends carry the same thread length. The black oxide finish offers mild corrosion resistance and reduces light reflection in finished assemblies. This type of fastener is commonly installed by plumbers, HVAC technicians, electricians, and mechanical contractors where a stud must engage two components simultaneously without a central unthreaded shank.

Equal double threaded studs like the ST1-40-G are used in a wide range of trade and industrial applications including pipe flange assemblies, equipment mounting, pump and motor connections, and structural panel attachment. The 3/8-16 coarse thread designation makes this stud compatible with standard 3/8-inch nuts and tapped components commonly found in residential and light commercial mechanical systems. Its 4-inch overall length suits moderate-depth fastening tasks where through-bolting is not practical.

Key Features

• Equal double threaded configuration with left and right hand threading on both ends
• 3/8-16 coarse thread size for broad compatibility with standard hardware
• 4-inch overall length suits a range of mechanical fastening depths
• 1117 grade carbon steel construction for solid mechanical strength
• Black oxide finish provides mild corrosion resistance and a clean appearance

Compatibility

Designed as a standard replacement or new-installation fastener for mechanical assemblies requiring a 3/8-16 equal double threaded stud with a 4-inch overall length.

Installation Notes

Installation is typically performed by licensed mechanical, plumbing, or HVAC technicians using standard hand tools or a stud driver. Power down or depressurize the system before servicing any assembly that uses these studs. Thread engagement on both ends should meet minimum depth requirements per applicable mechanical codes. Do not over-torque; use a calibrated torque wrench and follow the fastener manufacturer or system OEM specifications for the assembly being serviced.