HYTORC Washers


Frequently asked questions about HYTORC Reaction, Backup and Locking Washers Cut Sheet

How do I install a HYTORC Washer?

Please see the HYTORC Washer Installation Manual.

Do I need HYTORC tools to use the Washer?

No, the HYTORC Washer can be used with conventional bolting tools; however, the safety benefits of pinch-point free bolting are only available when using HYTORC tools.

What are the benefits of HYTORC Washers?

When used with dual socket drivers and compatible bolting tools, the HYTORC Washer completely eliminates the need for reaction arms and potentially dangerous pinch points.

What do the knurls on the Washer do?

The knurls create resistance by increasing the friction between metal surfaces to prevent the washer from rotating.

What is the HYTORC Washer made of?

HYTORC Washers are made of low-carbon steel (AISI4140), and are also available in stainless steel and non-ferrous materials

Is the HYTORC Washer safer than other washers?

Yes. When used with dual socket drivers and compatible tools the HYTORC Washer system eliminates the need for reaction arms and a backup wrench, significantly reducing the risk of hand injury.

Can the HYTORC Washer be reused?

Depending on the amount of wear and corrosion, HYTORC Washers can typically be reused several times before being replaced.

How can I tell if the HYTORC Washer has been installed properly?

Inspect the washer to ensure the beveled side is facing the flange with the flat side facing the nut.

How do I install HYTORC Reaction Washers?

The beveled side of the HYTORC Reaction Washer is placed against the flange, with the flat side facing the nut. Apply lubrication only to the flat side facing the nut.

What sizes of Washer are available?

HYTORC Reaction Washers and Backup Washers are available in sizes ranging from ½" to 3" imperial, and from M14 to M80 metric.

How do I install the HYTORC Backup Washer?

Install the Backup Washer between the flange and the back nut. If using a hex head bolt, install the Backup Washer between the flange and the bolt head with the chamfered side of the washer (the side without markings) facing the bolt head.

How hard is the HYTORC Washer?

Standard alloy HYTORC Washers are through-hardened and oil quenched to achieve a hardness of 38–45 HRC. Stainless steel washers usually have a hardness of 80-85 HRB, but can be custom treated up to 95HRB.

What coatings are available?

HYTORC Washers are available in a range of coatings to meet specific criteria based upon corrosion resistance, mechanical properties and environmental considerations. Please contact HYTORC for details.

What do the markings on the Washers mean?

HYTORC Washers display the "HYTORC" name and washer size in imperial or metric. Some washers also have a number or letter indicating the particular material or finish.

Can they be adapted to fit my application?

Yes, all HYTORC Washers can be customized to fit onto specific applications

What temperatures can they be used in?

Standard HYTORC Washers can be used in temperatures ranging from -20°F (-28.8°C) up to 750°F (399°C) for multiple use and up to 1,000°F (538°C) for a single use.

What is the shelf-life of a HYTORC Washer?

HYTORC Washers leave the factory packed with PW32 Vapor Corrosion Inhibitor (VCI) that protects them for up to 24 months. They should be stored in the original packaging away from direct sunlight in conditions below 85°F (30°C) and 50% RH.

Can they be used in transport equipment?

Yes. HYTORC Washers are well-suited for use in transportation applications, especially the new locking washer and backup washer that help maintain bolt integrity under vibration.

Do I need a separate driver for each Washer and bolt size?

Yes, you will need to identify the appropriate washer driver for each washer and bolt size.

Do I lubricate both sides of the Washer?

No. Lubricant is only applied to the flat side of the reaction washer facing the turning nut. Lubricant should not be applied to the side contacting the flange.

What if a reaction Washer gets accidentally installed upside down?

The fastener may not tighten properly. Simply reinstall the reaction washer with the beveled side facing the flange and the flat side facing the nut

Is lubricating the HYTORC J-Washer different than for traditional reaction Washers?

No. HYTORC J-Washers are lubricated in the same manner as a traditional washer, with lubrication applied to the flat surface facing the nut. Do not lubricate the beveled side.

What is the lead time for large orders?

Most washers are available in-stock. We may require 3 to 4 weeks notice for large or special orders; please contact HYTORC for availability.

Will the J-Washer loosen if lubricated?

The J-Washer's anti-loosening properties will not change if the lubricant is properly applied to the flat surface only

Can I use HYTORC Washers in tight spaces?

Yes, as long the support tools are designed or modified for the specific application. Please contact HYTORC for your specific application.

What will be the breakout torque required for the HYTORC J-Washer?

The HYTORC J-Washer generally requires the same breakout torque as HYTORC Reaction washers depending on the application, heat level and load requirements.

What is the limit of material hardness of flange the Washer is effective with?

There is no limit, but the washer hardness must be greater than the flange for the knurls to engage.

Do they work on painted surfaces?

Yes. HYTORC Washers can be installed on painted or unprepared surfaces, but there may be a witness mark as a result of the knurl pressing into the painted surface.