Frequently asked questions about HYTORC Reaction, Backup and Locking WashersCut 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
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
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.
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.
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
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
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
What will be the breakout torque required for the
The HYTORC J-Washer generally requires the same breakout torque
as HYTORC Reaction washers depending on the application, heat
level and load requirements.