Self-tapping screw 5.5×32 aisi 316 countersunk – code: a4-7982-05.5×032 – Osculati

Osculati Auto TS AISI 316 countersunk self-tapping screw 5.5×32

The Auto TS Osculati is a self-tapping screw in AISI 316 stainless steel designed for hardware and maintenance interventions where reliable and consistent small parts are needed for installations in nautical environments. This version is in countersunk head and is identified by the supplier code a4-7982-05.5×032. It is a practical solution for repairs, replacements, and fastenings on edge components, especially when you want to keep stainless steel screws consistent with the existing ones.

The product belongs to the family of self-tapping screws with cross recess, with references indicated by the manufacturer as UNI 6955 / DIN 7982. In technical terms, these references help to orient on the geometry and type of the screw, facilitating the choice when you need to replicate an already present fixing.

Features and construction details

This screw is designed for typical hardware use: quick assemblies, small parts replacements, and routine maintenance interventions. The combination of AISI 316 stainless steel and countersunk head makes it suitable for installations where it is useful to achieve a finish more “flush” with the surface, compatible with the component seat.

Countersunk head

The countersunk head is indicated when the component to be fixed has a countersunk seat or when you want to reduce protrusions. Before purchase, it is advisable to check the geometry of the seat (countersink) and the available space, so as to avoid interference with covers, housings, profiles, or adjacent accessories.

Cross slot and UNI/DIN references

The manufacturer provides references UNI 6955 / DIN 7982 for this family of screws. Practically, this is useful for those working on onboard systems and accessories who want to maintain continuity with standards commonly used in small parts. The’cross recess facilitates use with tools common in workshops and onboard.

Product size and identification

• Size: 5,5×32
• Supplier code: a4-7982-05.5×032
• Brand / supplier: Osculati S.r.l.

For maintenance activities, it is good practice to compare the size with the removed screw (or with the existing hole/seat) and verify that the length is compatible with the material thickness and any obstructions at the back.

Typical applications in nautical and onboard system fields

The self-tapping screw is often used when working on components where a nut is not provided at the back or where access is limited. On boats and generally in onboard systems, this type of small part can be convenient for fixings on panels, accessories, and small supports, always respecting compatibility between screw, material, and mounting seat.

Usage examples (to be verified on the actual case)

• Onboard hardware: replacement of worn or missing screws on accessories and small parts.
• Routine maintenance: restoration of fixings on components subject to vibrations or periodic disassemblies.
• Plant engineering and fittings: fixing of small elements, light brackets, or covers, when the seat is prepared for a countersunk head.

Each application must be evaluated based on the supporting material, available thickness, and correct preparation of the seat. In case of doubts, it is preferable to perform a test on a non-critical point or consult the documentation of the component to be fixed.

Usage and assembly notes

To achieve a correct fixing and reduce the risk of damaging the seat or the screw head, it is advisable to pay attention to the tool, alignment, and preparation of the fixing point. In particular, with countersunk heads, it is important that the component’s countersink is adequate, so as to avoid partial supports or deformations.

Practical advice (general)

• Seat check: check that the component has a countersink compatible with the head.
• Size check: compare the screw with the existing one or with the drawing/spare part of the component.
• Correct tool: use a good condition Phillips insert and keep the tool well aligned to avoid damaging the imprint.
• Progressive assembly: screw gradually, without forcing, especially on delicate materials or already used seats.
• Final inspection: check that the head rests correctly and that there is no play or misalignment.

Note: the final compatibility depends on the component being worked on (material, thickness, seat predisposition, and hole conditions). If you are replacing an existing screw, the safest solution is to replicate the type and size, also checking the shape of the head and the imprint.

Product references

• Product: Auto TS 5.5×32 AISI 316 countersunk
• Code: a4-7982-05.5×032
• Brand: Osculati

FAQ – Frequently Asked Questions

What is the material of the Auto TS Osculati screw?

This version is made of AISI 316 stainless steel, indicated by the manufacturer for screws intended for use in nautical and onboard environments.

What type of head does this screw have?

It is a countersunk head screw. Before installation, check that the component to be fastened has a compatible countersunk seat.

What is the product code for reordering?

The indicated supplier code is a4-7982-05.5×032. It is useful for precisely identifying the variant during purchase or reorder.

What drive does the screw have and what regulatory references are reported?

The screw has a cross drive and the manufacturer reports UNI 6955 / DIN 7982 references for this family of self-tapping screws.

In which contexts is it typically used?

It is typically used for hardware and maintenance interventions in nautical and onboard plant engineering, especially for replacements and restorations of small parts, always checking compatibility with the mounting seat.