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Alcoa Fastening Systems -
Stoughton Operations
44 Campanelli Parkway ~ Stoughton, Massachusetts 02072
800-343-3633 / 800-343-9664 Design
Information
 The shear and tensile strength of the rivet selected
and the number of rivets used in the application should equal or exceed the joint strength
requirements. Typical ultimate shear and tensile strengths are listed by diameter and
alloy in each rivet specification chart. Testing is always recommended before final
selection and use in product.
The rivet body material should be compatible with
the materials to be joined to resist galvanic corrosion which may result in reduction of
joint strength. If dissimilar materials are widely separated on the galvanic chart, it is
advisable to separate them with a dielectric material such as paint or other coating.
Marson can paint colors to match, as well as anodize or
plate to your specifications.
 After
determination of strengths required by diameter and alloy, the total thickness of material
to be joined must be considered. The grip range for each rivet is listed in each rivet
specification chart. Select the rivet grip range which includes the total thickness of
materials to be joined. Please note that the rivet barrel length (L) is not the grip
range.
Recommended hole sizes for each rivet diameter listed on the specification
chart should be followed closely. An undersize hole will not allow insertion of the rivet
body; an oversize hole will reduce shear and tensile strengths, and may cause improper
rivet setting, all of which promote joint failure.
The various head styles are offered to accommodate different assembly
needs. The most popular Klik-Fast rivet is the buttonhead, whose lower-profile head is
twice the diameter of the rivet body. This provides adequate bearing surface for nearly
all applications. The large flange Klik-Fast rivet provides greater bearing surface for
fastening soft or brittle facing materials. The countersunk Klik-Fast rivet is available
for applications where a flush appearance is required. And the closed-end rivet is ideal
for electric or electronics applications.
Besides the sizes, alloys and head styles listed,
we manufacture
a wide range of special rivets to accommodate a variety of customer needs for strength,
head style and grip range.
You are invited to send your applications
questions or problems to our Application Engineer at
Alcoa Fastening Systems via Telephone, E-mail or mail
your request for evaluation, testing and recommendations.
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