Auto ts 3.9×19 aisi 316 domed – code: a4-7981-03.9×019 – Osculati

Osculati AISI 316 stainless steel self-tapping screw (pan head)

The Osculati self-tapping screw in AISI 316 stainless steel with rounded head is a small hardware component designed for practical and tidy fastening in nautical and plant engineering contexts. It is a suitable solution when a reliable fastening element is desired, with an aesthetically clean head and quick installation on suitable supports, typical of self-tapping screws.

This item is identified by the supplier code a4-7981-03.9×019 (brand Osculati S.r.l.) and is useful for reordering, spare parts management, and scheduled maintenance. The product description is intentionally kept simple and technical to facilitate the correct choice during procurement.

Product features and details

Material: stainless steel AISI 316

The screw body is made of AISI 316, , a stainless alloy commonly used in nautical and marine contexts for its suitability in exposed environments. The choice of AISI 316 is typical when corrosion resistance is prioritized over more standard stainless steel solutions.

Type: self-tapping screw

Being a self-tapping screw, , it is designed to create its own thread in the support material (depending on the type of material and hole preparation). This makes it practical for installation and maintenance interventions where reducing processing steps is desired while maintaining neat fastening.

Rounded head

The rounded head offers a clean visual finish and a rounded profile. It is a frequent choice when the head remains visible and a more “refined” appearance is preferred compared to other geometries, while maintaining a compact size.

Item identification

• Supplier: Osculati S.r.l.
• Supplier product code: a4-7981-03.9×019
• SKU: 0scu0000001227

Note: to avoid errors during reordering, it is always recommended to refer to the supplier code and SKU, especially when managing multiple similar stainless steel screw variants.

Typical applications (nautical and plant engineering)

This AISI 316 self-tapping screw is suitable for general fastening applications where stainless steel small hardware suitable for technical contexts is required. In particular, it can be used in:

• Onboard maintenance: replacement of worn or oxidized screws, restoration of fastenings on accessory components.
• Accessory installations: light assemblies and finishes where the head remains visible and a neat aesthetic result is preferred.
• Plant engineering and hardware: fastenings on compatible supports in technical, workshop, or nautical yard environments.
• Fittings and refitting: targeted interventions on paneling, profiles, brackets, and small parts (depending on the material and thickness of the support).

The choice of the correct screw always depends on the material to be fixed, the thickness, the type of support, and the operating conditions. In case of doubt, it is advisable to check the sample screw already installed or consult the spare parts list.

Usage and operational notes

Preparation and assembly

For correct assembly, it is good practice to:

• check that the Ready to use and easy to manage suitable for the use of a self-tapping screw;
• assess the need for a pilot hole based on the material and the planned processing;
• use a tool compatible with the screw drive, maintaining the screwing axis to avoid damage;
• avoid excessive tightening that could compromise the seat or deform the fixed component.

Combination with other materials

In nautical applications, it is common to combine stainless steel with other metals or materials. In case of particular pairings, carefully evaluate the compatibility of the fastening system and environmental conditions. If necessary, adopt isolation or protection solutions appropriate to the project (without improvisation), especially in the presence of humidity or salinity.

Maintenance and replacement

During routine maintenance, periodically check the condition of the screws: any signs of wear, damage to the drive, or difficulty tightening may indicate the need for replacement. To maintain consistency and repeatability, it is recommended to reorder using the code a4-7981-03.9×019.

Summary of identifiers

• Product: Auto ts AISI 316 pan head (Osculati)
• Code: a4-7981-03.9×019
• SKU: 0scu0000001227

FAQ – Frequently Asked Questions

What is the material of this Osculati self-tapping screw?

The screw is made of AISI 316 stainless steel, suitable for technical applications including nautical environments.

What type of head does the product have?

The product is a self-tapping screw with a pan head, designed for a neat finish when the head remains visible.

What is the correct code for reordering?

For reordering and item identification, refer to the supplier code a4-7981-03.9×019 (SKU 0scu0000001227).

In which contexts is this screw typically used?

It is suitable for installations and maintenance in the nautical and plant engineering field, for fastening on supports suitable for self-tapping screws.

What should be checked before assembly?

It is advisable to check the material of the support, the possible need for pre-drilling, and the use of the correct tool to avoid damage to the drive and fastening.