Metal tsp cross 8×40 mm aisi 316 – code: a4-965-08×040 – Osculati

Metal TSP cross screw in AISI 316 for neat fixings

The Osculati metal TSP cross screw in AISI 316 stainless steel it is designed for those looking for a reliable fastening element consistent with the typical needs of nautics and of the’onboard systems. The combination of stainless steel material and flat countersunk head allows a clean assembly, with flush surface finish when the seat is prepared, useful where the head clearance must remain contained and the fixing aesthetics are important.

This item belongs to the family “Flat countersunk head cross slot screws, UNI 6109 DIN 965”. It is a suitable choice in machining and maintenance where an orderly, inspectable fastening is desired and easily manageable with common cross slot tools.

Features and construction details

Material: stainless steel AISI 316

The’AISI 316 is a stainless steel frequently used in marine and technical fields for its suitability in environments exposed to external agents. In onboard applications, the choice of fastening material is often decisive for the assembly's durability and to reduce replacement interventions over time.

Cross slot (TSP)

The slot cross allows practical and widespread tightening, compatible with the normal set of workshop and onboard tools. It is a convenient solution when working in tight spaces or when a quick and controllable screwing is desired.

Flat countersunk head for flush mounting

The flat countersunk head is designed to fit into a countersunk seat, helping to achieve a more uniform surface and reducing protrusions. This aspect is useful on paneling, covers, finishes, and components where the screw head must not interfere with passages, covers, or moving parts.

Format and product identification

• Size: 8×40 mm
• Supplier code: a4-965-08×040
• Brand / supplier: Osculati S.r.l.
• Reference family: UNI 6109 DIN 965 (flat countersunk head cross slot screw)

Correct identification by code is particularly useful for reorders, standardization of small parts onboard, and management of material lists in the workshop.

Typical applications in nautical and plant engineering

This screw is suitable for many assembly and maintenance situations where a countersunk head and stainless steel material are required. In the nautical field, small parts are often used on components subject to vibrations, humidity, and periodic interventions: choosing an AISI 316 screw can help maintain consistency with the usage environment and other metallic components present.

Examples of use (indicative)

• Onboard fittings and finishes: fastening panels, profiles, and covers where a flush head is preferable.
• Plant engineering and accessories: assemblies on supports, brackets, and technical components requiring orderly and inspectable tightening.
• Routine maintenance: replacement of existing screws with stainless steel equivalents, maintaining head geometry and slot.
• General applications in outdoor environments: installations where stainless steel is a common choice to reduce problems related to exposure.

Note: compatibility with specific materials (wood, metal, composites) and the choice of hole/countersink depend on the project and support. In case of doubt, it is advisable to check the sample screw already installed or the technical specification of the system.

Usage and operational notes

Preparation of the hole and countersink

To achieve a flush surface assembly, it is important that the support has a proper countersinking to the head. A correct countersink helps distribute the contact of the head and maintain the alignment of the fastening. If the seat is not countersunk, the head may remain protruding or not rest evenly.

Tool selection

Using a well-conditioned cross insert helps reduce the risk of damaging the imprint during tightening. In repetitive operations or on delicate materials, it can be useful to proceed with progressive and controlled tightening.

Matching with components and accessories

Depending on the application, the screw can be matched with compatible fastening and support elements (such as washers or nuts) according to the design. To maintain assembly consistency, it is advisable to choose components made of material suitable for the environment and the existing small parts.

Identification for reorder

For reorders or replacements, refer to the Osculati code a4-965-08×040 and the family description (flat countersunk cross head, UNI 6109 DIN 965). This reduces the risk of purchasing a screw with a head or imprint different from that required by the installation.

FAQ – Frequently Asked Questions

Is this screw suitable for nautical applications?

Yes, it is an AISI 316 stainless steel screw and is offered for technical uses in the nautical field and onboard systems, where material choice is important.

What type of head does this screw have?

It has a flat countersunk head, designed for neat and flush mounting when the support is prepared with the correct countersink.

What type of screwdriving imprint does it use?

It uses a cross recess (TSP), practical for installation and maintenance interventions with common tools.

To which family/standard does it belong?

It belongs to the family “Flat countersunk head cross slot screws, UNI 6109 DIN 965”.

What is the Osculati product code for reordering?

The supplier code is a4-965-08×040.