Most industrial fasteners are covered by two basic
standards: one for materials and properties; the
other, for dimensions and tolerances. Specifications
for materials and properties are published by
the American Society for Testing and Materials
(ASTM), although other groups such as the Society
of Automotive Engineers (SAE) also publish
specifications covering these requirements.
Standards for dimensions and tolerances are issued
by the American National Standards Institute
(ANSI) in cooperation with the American Society
of Mechanical Engineers (ASME) and the Industrial
Fasteners Institute (IFI).
Where applicable, published specifications
covering a particular fastener will be referenced
in the section of this booklet dealing with that
When referring to standards and specifications, we
will use only the well-known initials of the above
societies-ANSI, ASME, IFI, ASTM and SAE.
Standard fasteners are basic industrial fasteners
- square and hex bolts, cap screws, carriage bolts,
plow bolts, lag screws, studs, nuts, rivets and others
- which have been standardized over the years as
to type‘, style, usage, properties, dimensions and
These include a vast range of sizes and types
stocked by distributors and manufacturers for an
almost limitless range of applications: the assembly
and maintenance of vehicles, appliances, farm
equipment, construction equipment, industrial and
plant machinery of all kinds, furniture and toys.
Wherever there’s a need for holding parts together,
holding them apart, holding them up, or holding
them down, a standard fastener can usually be
found to do the job efficiently and economically.
Modern industrial fasteners are manufactured
to a variety of standards covering dimensions,
tolerances, materials, mechanical properties, testing
All of the information provided in this section
has been assembled with concern for accuracy.
It is intended for advisory purposes only and
use of this information is completely voluntary.
We do not guarantee its completeness
or validity and assume no responsibility
for any loss, claims or damages resulting
from use or application of this information.
All information is subject
to change without prior notice.
Be sure to verify!