Auto ts 6.3×25 aisi 316 countersunk code: a4-7982-06.3×025 – Osculati

Self-tapping screw Osculati in AISI 316 with countersunk head

The Auto TS 6.3×25 in AISI 316 stainless steel by Osculati is a self-tapping screw designed for technical fastenings where stainless steel hardware and a neat finish of the screwing point are desired. The countersunk head allows flush or slightly recessed insertion (depending on the seat), contributing to a clean result on panels, accessories, and edge components.

The product is identified by the supplier code a4-7982-06.3×025 and is indicated as a spare part or for new installations in nautical and plant engineering fields, always considering support material, pilot hole, and correct preparation of the countersink.

Features and construction details

Material: stainless steel AISI 316

Made of AISI 316, this screw is suitable for contexts where stainless steel hardware is preferred for technical applications. In the nautical field, the choice of stainless steel is often linked to material consistency and durability over time, especially when the screw is part of an assembly exposed or subject to periodic maintenance.

Format and size

The size is 6.3×25. For a correct choice, it is good practice to check the available space, the thickness of the material to be fastened, and the possible need for a pilot hole based on the support.

Flat countersunk domed head

The flat countersunk domed head is designed to offer a neat finish and a consistent support with countersunk seats. In applications on panels or accessories, the countersink helps reduce protrusions and improve the aesthetics of the fastening when the seat is properly prepared.

Cross recess

The’cross recess It is a common solution in maintenance and installation because it allows the use of widespread tools and facilitates intervention even in technical spaces, where work is often done with standard equipment.

Type references (UNI / DIN)

The manufacturer reports type references UNI 6955 and DIN 7982. These indications are useful for comparing the screw with other hardware of the same family and for maintaining consistency in case of replacement or integration on existing systems.

Typical applications in nautical and onboard systems

This self-tapping screw can be used in many fastening situations where a stainless steel component and a countersunk head for a cleaner finish are required. In particular, it is practical for:

• Maintenance and spare parts on accessories and onboard components that use self-tapping screws with countersunk heads.
• Fastenings on panels and housings, when an adequate countersunk seat is planned or achievable.
• Technical installations in the nautical field, where uniformity of stainless steel small parts is desired.
• Plant engineering and fittings (supports, brackets, small assemblies), always evaluating compatibility with the base material and the correct preparation of the hole.

As with any self-tapping screw, suitability depends on the support and the geometry of the fastening: it is advisable to preliminarily check the seat, accessibility, and any need for a pilot hole.

Usage and operational notes

Support and pilot hole check

For a reliable fastening, it is important to evaluate the base material and, if necessary, prepare an pilot hole adequate pilot hole. The pilot hole can facilitate screwing, reduce the risk of damaging the support, and improve the centering of the screw, especially when working on panels or components with limited thickness.

Countersink preparation

The performance of the countersunk head depends on the seat: a correct countersink helps the screw to sit evenly. In the absence of an adequate seat, the head may not be flush or may mark the surface. Before assembly, it is advisable to check the angle and depth of the countersink according to the component to be fastened.

Tool selection

With a cross recess, it is appropriate to use a well-conditioned insert of the correct size, keeping the tool aligned to reduce the risk of slipping and preserve the recess during screwing.

Consistency with existing small parts

In case of replacement, always compare the screw with the one already installed (head, recess, size, and type). The references UNI 6955 and DIN 7982 can be useful as a guide to verify the product family, without replacing direct verification on the application.

Product identification

• Supplier: Osculati S.r.l.
• Supplier product code: a4-7982-06.3×025
• Type: self-tapping screw (Auto TS), flat countersunk domed head, cross recess
• Material: AISI 316 stainless steel

For specific applications or particular materials, it is advisable to perform a test on a sample or evaluate the most suitable fastening solution based on the component and installation conditions.

FAQ – Frequently Asked Questions

What is the supplier code of this Osculati screw?

The supplier product code is a4-7982-06.3×025, useful for identifying the spare part and reordering the same item.

What material is the Auto TS 6.3×25 screw made of?

The screw is made of AISI 316 stainless steel.

What type of head and recess does this screw have?

It is a self-tapping screw with a flat countersunk domed head and a cross recess.

Which type standards does the manufacturer refer to?

The manufacturer reports the type references UNI 6955 and DIN 7982.

Is it necessary to make a pilot hole before assembly?

It depends on the support material and the application. In many cases, an appropriate pilot hole helps the screwing and improves centering; it is advisable to also evaluate the correct seat of the countersink.