Imperial fasteners

Inch fasteners are selected according to diameter, thread designation and threads per inch. The NERON Piła catalogue has separate sections for inch nuts, inch screws and inch threaded rods. Before choosing, compare the complete part designation with the machine or equipment documentation.

Nuts

Bolts and screws

Threaded rods

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Inch-size products for threaded connections

Inch-thread fasteners are used in equipment whose documentation specifies this measurement system. When repairing or assembling a connection, both thread size and type must be identified. A similar outside diameter does not confirm that two components will work together correctly.

Inch nuts, bolts and rods in the NERON catalogue

Inch nuts — select a version matching the bolt or rod thread and the connection requirements.
Inch bolts — compare diameter, length, thread type, head shape and drive.
Inch threaded rods — check thread designation, length, material and properties required for the application.

UNC, UNF and TPI — reading the designations

UNC denotes the Unified Coarse thread series, while UNF denotes the fine-thread series. TPI is the number of threads per inch of length. The diameter in inches alone is therefore insufficient to match a nut to a bolt. The full thread designation is required. Understanding these symbols helps identify parts; availability of a particular version must be checked in the specific catalogue item.

How to prepare selection data?

Read the part designation from the documentation or packaging.
Establish nominal diameter and threads per inch, for example using an appropriate thread gauge.
Check length, thread direction and required tolerances.
Compare material, property class and surface protection.
Consider head shape, installation space and the required tool.

Frequently asked questions about inch fasteners

Can an inch thread be replaced by a metric one?

Do not select a substitute solely by similar diameter. Differences in pitch and thread geometry may prevent correct installation or damage mating components.

Are all inch threads compatible with each other?

No. “Inch” does not define a single thread system. Matching requires comparison of the full designation, not just the dimension stated in inches.

What should an enquiry to NERON in Piła include?

Provide the component type, full thread designation, length, material, required version and quantity. Legible markings and a drawing from the equipment documentation will help identify the part.