Auto ts 3.5×25 aisi countersunk 3.5×25 – code: a4-7982-03.25×025 – Osculati

Countersunk TS AISI self-tapping screw 3.5×25 Osculati

The Auto TS 3.5×25 AISI countersunk Osculati is a self-tapping screw designed for technical work and fastenings, where it is useful to achieve a neat fit and flush surface finish thanks to the countersunk head. It is a typical solution for hardware and for installation or maintenance activities on onboard components and accessories, with a practical and immediately recognizable format during selection and reorder.

This sheet refers to the size 3.5×25 and the supplier code a4-7982-03.25×025, useful for quick identification and supply consistency in professional contexts.

Product features and details

Type

• Self-tapping screw (Auto TS)
• Countersunk head for an assembly with flush finish (depending on the material and the countersink seat)
• Material: AISI (as per product name)

Size and identification

• Size: 3,5 × 25
• Supplier product code: a4-7982-03.25×025
• Supplier: Osculati S.r.l.
• SKU: oscu0000001221

Typical applications (nautical and onboard plant engineering)

A countersunk self-tapping screw is commonly used when a clean fastening and a flush head are desired, for example on paneling, finishes, or components where the external bulk must remain contained. In nautical and maintenance contexts, it can be used in many operational situations, depending on the material to be fastened and the support.

Examples of use

• Assembly and fastening of hardware accessories and small parts on surfaces prepared for countersinking.
• Installations on panels or coverings where a flush finish is useful.
• Localized maintenance and replacement of screws on existing components, maintaining the same type (Auto TS) and size.
• Light assemblies and fastening of service elements, when a component in AISI is required as per project or specification.

Note: the choice of the correct screw always depends on the support, the thickness of the materials, and the presence of an adequate countersink seat. If necessary, check the required size by comparing it with the existing screws or the installation drawing.

Operational advantages

In daily work, especially in technical contexts where multiple interventions and spare parts are managed, well-identified and consistent screws simplify activities and reduce errors during assembly. This Osculati Auto TS combines a widespread configuration (self-tapping) with a countersunk head, useful for neat finishes.

• Cleaner finish: the countersunk head helps achieve a flush surface result when the seat is properly prepared.
• Practicality in maintenance: clear type and size (3.5×25) for replacements and restorations.
• Quick identification: the code a4-7982-03.25×025 facilitates reordering and spare parts management.
• Availability of variants: the same series includes many sizes, useful for standardizing small parts across multiple applications.

Usage and selection notes

Size selection

The size 3.5×25 it is indicated when the project or replacement requires exactly this format. If replicating an existing fastening, it is good practice to check:

• the size of the removed screw (diameter and length);
• the presence of the countersinking on the component to be fastened;
• the condition of the support and any need to restore the hole.

Assembly

For a neat assembly, ensure that the countersunk head can properly rest in the seat. In case of replacement, maintaining the same type of screw helps preserve the alignment and aesthetics of the fastening. In technical applications, the use of appropriate tools and proper preparation of the fastening point contribute to a cleaner result.

Spare parts management and procurement

For repeated orders or for technical stock, it is recommended to refer to:

• Brand/Supplier: Osculati S.r.l.
• Supplier code: a4-7982-03.25×025
• Size: 3.5×25

These references reduce ambiguity among similar variants of the same series.

FAQ – Frequently Asked Questions

What is the size of this Auto TS Osculati screw?

This variant is size 3.5×25 (in mm), as indicated in the title and series selection.

What type of head does the screw have?

It is a countersunk head screw, designed for a flush finish when the component to be fixed is provided with an appropriate countersink seat.

What is the product code for reordering?

The indicated supplier code is a4-7982-03.25×025 (Osculati S.r.l.). You can use it to precisely identify the 3.5×25 variant.

Are there other sizes in the same series?

Yes. The Auto TS AISI countersunk family includes several selectable sizes (for example 2.9×10, 3.5×32, 4.2×50, 6.3×60 and others). This page is dedicated to the 3.5×25.

In what contexts is a countersunk self-tapping screw typically used?

It is commonly used in hardware and technical component fastenings where a flush head is desired, for example on panels, finishes or accessories, depending on the support and installation.