Frequently Asked Questions About International HX Frame Nut Covers

What models and years do these frame nut covers fit?

These frame nut covers are specifically designed for International HX Series trucks from 2017 to present. They fit the standard frame rail bolt patterns found on HX520, HX515, and HX620 models. The covers are engineered to match the factory frame dimensions, so they'll work with both single and tandem axle configurations. If you have an older International model or a different series, these covers won't properly align with your frame bolt spacing.

Are these made from real stainless steel or just chrome-plated plastic?

Our International HX frame nut covers are manufactured from genuine 304 stainless steel, not chrome-plated plastic or ABS. The stainless steel construction provides superior corrosion resistance and maintains its appearance even in harsh weather conditions. You can verify the material by using a magnet - 304 stainless steel is non-magnetic. The covers feature a mirror-polished finish that won't peel, flake, or yellow over time like chrome plating can.

How difficult is the installation, and what tools do I need?

Installation is straightforward and typically takes 30-45 minutes per side. You'll need a socket wrench set (typically 15/16" or 1" sockets), and we recommend having thread locker on hand. The covers install directly over your existing frame bolts - simply remove each bolt one at a time, slide the cover over the bolt, and retighten to factory torque specifications (usually 450-500 ft-lbs). No drilling, cutting, or modifications to your frame are required. The covers include pre-cut slots that align with standard bolt spacing.

Will these covers interfere with my air lines, wiring, or other frame-mounted accessories?

These frame nut covers are designed with a low-profile dome shape that adds only 3/4" of height to your existing frame bolts. This minimal profile ensures compatibility with standard air line routing, electrical harnesses, and most aftermarket accessories. However, if you have custom frame-mounted equipment or non-standard routing, we recommend checking your clearances before ordering. The covers work with both inside and outside frame rail mounting positions.

Do these covers come as a complete set, and how many pieces are included?

Frame nut covers are sold in complete sets that include enough pieces to cover all visible frame bolts on both driver and passenger sides. A standard set includes 32 covers, which accommodates most HX configurations. The exact number you need depends on your wheelbase and frame rail length. For extended wheelbases or custom frames, you may need to order additional sets. Each cover is individually packaged to prevent scratching during shipping, and installation hardware is not included since you'll be using your existing frame bolts.