Gibraltar 840435C-G Steel T-strap Bolt 3/8-16 Zinc-plated

Product Description

The GIBRALTAR 840435C-G is a Grade 5 steel T-strap bolt designed for structural fastening applications where a broad, flat head profile is required to distribute clamping load across straps, brackets, and flat stock. The bolt features a 3/8-16 UNC thread with a 2-inch thread length and a 3.5-inch length under the head. A zinc-plated finish provides basic corrosion resistance for indoor and light-duty outdoor use. The wide 2-inch head width and 3/8-inch head height are engineered to seat flush against strap-style hardware, making this fastener a standard choice for mechanical, structural, and HVAC duct support assemblies.

This T-strap bolt is suited for trade and light industrial applications where standard hex bolts lack the head geometry needed to secure flat strap connections. Typical installations include duct hanger straps, structural brackets, equipment mounting plates, and general mechanical assemblies. The 3/8-16 UNC thread size is compatible with standard hex nuts, coupling nuts, and threaded inserts commonly found in commercial and residential construction. Licensed contractors and maintenance professionals across HVAC, plumbing, and general mechanical trades routinely stock this fastener size for field repairs and new installations.

Key Features

• Grade 5 steel construction for reliable tensile and shear strength in structural fastening
• 3/8-16 UNC thread standard ensures broad compatibility with off-the-shelf hardware
• 2-inch thread length provides adequate engagement for standard nut and coupling applications
• 3.5-inch length under head accommodates stacked or thick strap assemblies
• 2-inch head width distributes clamping force evenly across strap-style hardware
• Zinc-plated finish offers corrosion resistance for indoor and protected outdoor environments

Compatibility

Designed as an OEM-style replacement or standard stock fastener for applications requiring a 3/8-16 UNC T-strap bolt with a 2-inch head width and Grade 5 steel construction.

Installation Notes

Installation is performed by licensed contractors or qualified maintenance technicians using standard 3/8-inch drive or open-end wrench tooling. Torque the fastener to the appropriate Grade 5 specification for 3/8-16 hardware per the applicable code or engineering reference — do not rely on feel alone. Ensure mating hardware such as nuts and washers are rated to the same or higher grade. Inspect the zinc-plated finish for damage before installation in environments with standing moisture exposure.