Auto tc 3.5×25 aisi 316 domed – code: a4-7981-03.5×025 – Osculati

AISI 316 Osculati domed self-tapping screw

The Self-tapping TC 3.5×25 in AISI 316 domed Osculati (supplier code a4-7981-03.5×025) is a fastening element designed for technical uses where reliability, assembly order, and a clean finish are needed. The profile with domed head offers a neat appearance and a good bearing surface, making it suitable for many typical installations in nautical and onboard plant engineering.

Product features and details

Type

• Self-tapping screw (self-threading) for practical fastening on suitable supports.
• Rounded head, useful when an aesthetically neat finish and a softer upper bulk compared to sharper heads are desired.

Material

• AISI 316 stainless steel.

Dimensions

• 3.5×25.

Identification and codes

• Brand / supplier: Osculati S.r.l.
• Supplier product code: a4-7981-03.5×025
• SKU: oscu0000332

Note on the name

The description “Self-tapping TC 3.5×25 AISI 316 domed” summarizes the main information: screw type, size, material, and head shape. For orders and restocking, refer to the Osculati code a4-7981-03.5×025 to avoid ambiguity.

Typical applications (nautical and onboard plant engineering)

This screw is suitable for many machining hardware and installations in the nautical field, where stainless steel small fittings are often preferred for consistency with the operating environment and for better maintenance management. In particular, it can be used in interventions such as:

• Fastening accessories and components on panels, coverings, and compatible supports.
• Mounting of small hardware and small fittings on non-structural parts.
• Localized restoration and replacement of existing screws, maintaining homogeneous material and finish.
• Installations where the rounded head is preferred to reduce edges and achieve a more refined appearance.

To correctly choose the screw, it is always advisable to consider the Ready to use and easy to manage (material and thickness), the mounting position, and the accessibility for screwing, in order to achieve a neat and easily inspectable fastening.

Advantages in use

Material choice: AISI 316

The’AISI 316 is a material commonly used in nautical environments and in applications where a higher-grade stainless steel bolt is desired. It is a practical choice for those who want to reduce the variability of materials used on board and maintain a consistent spare parts inventory.

Rounded head: finish and practicality

The rounded head is often appreciated for:

• a a cleaner appearance visible compared to more “technical” or angular solutions;
• a rounded upper surface, useful in passage areas or where a reduced visual impact is desired;
• easy handling during assembly, especially when working on finishes or panels.

Format suitable for maintenance

The size 3.5×25 is typical of small parts for assembly and maintenance interventions. In an operational context (shipyard, storage, or routine maintenance), having screws with clear coding and a recognized brand available helps speed up replacements and maintain uniform standards.

Usage and operational notes

General installation instructions

• Check that the size 3.5×25 is suitable for the thickness and type of support.
• In case of replacement, compare the removed screw with the new one (diameter, length, and head) to maintain the same aesthetic and functional imprint.
• For a neat result, take care of the alignment and the seating of the rounded head on the surface.

Compatibility and choice of support

Since no further details are available on the type of support intended, it is advisable to use this screw on materials and configurations compatible with self-tapping screws and with the installation requirements. If you have doubts about the correct match (for example on panels, accessories, or specific hardware), consider a test on a sample or contact technical support with your assembly information.

Spare parts and reordering

To quickly reorder, use the Osculati code a4-7981-03.5×025 and the SKU oscu0000332. This reduces the risk of confusion between similar variants (same head, material, or different sizes) and simplifies the management of the bill of materials.

Product: Auto TC 3.5×25 AISI 316 rounded – Osculati – code a4-7981-03.5×025.

FAQ – Frequently Asked Questions

What is an Auto TC screw?

It is a self-tapping screw (Auto) with TC type, used for practical fastening on suitable supports, often employed in hardware maintenance and installations.

What material is this Osculati screw made of?

The screw is made of AISI 316 stainless steel, as indicated in the product name and supplier code.

What are the dimensions and head shape?

The size is 3.5×25 and the head is domed type, designed for a neat visible finish.

What is the Osculati product code for reordering?

The supplier code is a4-7981-03.5×025. For internal reference, the SKU oscu0000332 is also available.

Is it suitable for nautical applications?

Yes, it is a small fitting in AISI 316 proposed for contexts such as nautical and onboard plant engineering, typically used for assemblies and replacements of hardware on compatible supports.