Frequently Asked Questions About Ford F650-F750 Truck Frame Nut Covers

What size thread patterns do these nut covers fit, and will they work on my specific F650 or F750 model year?

Most Ford F650-F750 frame nut covers are designed to fit standard 33mm (1.3") hex nuts commonly found on these trucks from 2000 to current model years. However, some older models (pre-2000) may have different sizing. We recommend measuring your frame nuts before ordering or contacting us with your VIN to confirm compatibility. The covers typically work with both standard and metric thread patterns as they cover the nut head rather than threading onto the bolt.

Are these nut covers made of plastic or metal, and how well do they hold up to road salt and weather conditions?

Our frame nut covers come in both ABS plastic and stainless steel options. The ABS plastic covers feature UV-resistant coating and are impact-resistant down to -40?F, making them suitable for all climates. Stainless steel options offer maximum durability and corrosion resistance, especially important for trucks operating in areas with heavy road salt use. Both materials are designed to withstand commercial trucking conditions without cracking, fading, or falling off.

Do I need any special tools to install these, and how do they actually stay on the nuts?

Installation requires no special tools. Most nut covers use either a push-on friction fit design or a threaded insert system. Push-on styles simply press over clean, dry nuts and lock in place with internal tabs. Some models include a small set screw for added security. Installation typically takes 2-3 minutes per cover. We recommend cleaning the nuts with brake cleaner before installation to ensure proper adhesion and fit.

How many nut covers come in a set, and how many will I need for my entire truck?

Nut covers are typically sold in sets of 10, 20, or 30 pieces. A standard F650 or F750 chassis usually requires between 20-40 covers depending on your truck configuration, body type, and whether you're covering just the visible frame rails or including cross members. Single axle trucks generally need fewer covers than tandem axle models. We recommend doing a complete count of visible frame nuts before ordering.

Will these nut covers interfere with maintenance or do they need to be removed for inspections?

Quality nut covers are designed for easy removal when maintenance is required. Push-on styles can be pried off with a flat screwdriver without damage and reused multiple times. They do not interfere with DOT inspections as they don't obscure the frame or critical components. Many fleet operators actually prefer them as they protect the nuts from corrosion, making future maintenance easier. The covers also help identify missing or loose nuts more quickly during pre-trip inspections.