Marshfasteners – For the best stainless steel bolts

Last Updated on July 1, 2020 by Marsh Fasteners

At Marshfasteners, we have stainless steel bolts, stainless steel hex and lag bolts, carriage bolts and stainless steel cap bolts. Our extensive inventory of all these categories allows us to offer you the most competitive pricing, whether you’re looking for a box or a pallet. When looking for specific stainless steel bolts and nuts, you need to know the difference between 316 stainless steel bolts, 304 stainless steel bolts, and 18/8 stainless steel bolts as well as a wide variety of other bolts.

316 Stainless steel bolts

These stainless steel bolts are austenitic and non-magnetic. The carbon content is held to 0.08% maximum, while the nickel content is increased. Molybdenum of 3% is also added to the combination.

304 Stainless steel bolts

These bolts are austenitic steel possessing a minimum of 18% chromium and 8% nickel and a maximum of 0.08% carbon. It is a nonmagnetic steel which cannot be hardened by heat and must be cold-worked to obtain higher strengths.

18/8 Stainless Steel bolts

These bolts have 18% chromium and 8% nickel. The term "18-8" is used to characterize fittings made of 302, 302HQ, 303, 304, 305, 384, XM7, and other variables of these grades with close chemical compositions.

Button head stainless steel bolts

Button head stainless steel bolts are used in machine parts and clamping. The button head enables driving where there is not sufficient space for wrenches or sockets. These bolts also offer a bigger bearing surface and high strength.

Carriage stainless steel Bolts

A carriage stainless steel bolt has a domed or countersunk head and the shank is topped by a short square section under the head. The square section fits into the part being fixed, preventing the bolt from turning when the nut is tightened.

Hex Head stainless steel Bolts

Hex bolts are a used during construction and repair. Hexagon screw head bolts come in a large variety of sizes and diameters. The best way to choose the right hex bolt is to find the bolt material that best suits your needs when repairing an item.

Lag stainless steel Bolts

Lag bolts or lag screws are made of steel, stainless steel or silicon bronze and can be galvanized to accommodate any and all projects as needed. Mostly used in the construction field, lag bolts are also commonly used for a variety of projects in and around your home.

Tap stainless steel Bolts

Tap stainless steel bolts have a trimmed hex head with a no-flange face. Tapping screws are used for boatbuilding and exterior woodworking. Tapping screws are offered in a variety of types and sizes and tap bolts have a smooth body with threading on the end of the bolt.

Stainless Steel U-Bolts or Eye Bolts

U-Bolts or eye-bolts are used in building and construction and the bent shape of the bolt keeps it firmly in place. U-bolts are used as framing fasteners and anchors for foundations and roofs, pipe and conduit holders, and bolts for motor and engine shaft components.


How to stop stainless steel bolts from seizing?

Using different stainless alloy grades for the bolt and the nut as well as lubricating it thoroughly reduces galling.

What grade are stainless steel bolts?

There are a number of different grades of stainless steel bolts including 304 stainless steel, 18/8 stainless steel, and 316 stainless steel bolts.

How strong are stainless steel bolts?

Stainless steel bolts are slightly stronger than Grade 2 bolts and less strong than Grade 5.

What is best for sealing stainless steel bolts on outboard motors?

Using galvanized items or making use of marine silicone will ensure a tight fit on outboard motors.

Can I use stainless steel bolts in aluminum?

Stainless steel fasteners in aluminum plates or sheets are safe. Aluminum bolts holding stainless steel parts together are considered unsafe as there is the practical risk of corrosion.

How to cut stainless steel bolts?

Place the steel bolt on a thread, mark the place where you want to cut the bolt, place it in a vise and saw it off with a hacksaw.

What is the yield strength of stainless steel bolts?

The yield strength of a stainless steel bolt is around 700 psi.

What is the difference between zinc-plated vs stainless steel bolts?

Galvanizing stainless steel bolts is the process of applying a protective zinc coating by dipping the product in a bath of molten zinc. Zinc-plated stainless steel bolts are where zinc is applied by using a current of electricity.

Let Marshfasteners tighten your bolts and nuts

Please visit the individual departments for the most popular sizes of stainless steel bolts in our store, or contact us at 800 453-4642 for prompt service. When ordering, please specify if you need the stainless steel nuts or stainless steel washers with the bolts.

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