Self-tapping screw 4.2×45 aisi 316 countersunk – code: a4-7982-04.2×045 – Osculati

Osculati Auto TS 4.2×45 self-tapping screw in AISI 316

The Auto TS 4.2×45 Osculati is a self-tapping screw made of AISI 316 stainless steel, designed for assembly and maintenance interventions where stainless steel screws suitable for technical contexts are required, including those typical of nautics and of the’onboard systems. The product is identified by Osculati code a4-7982-04.2×045 and belongs to the family of self-tapping screws with references UNI 6955 / DIN 7982.

This version is indicated as countersunk and is suitable for installations where a neat fastening is desired, with a clean finish at the screwing point. It is a practical choice for those working on site, in the workshop, or on board and needing a reliable solution consistent with the use of stainless steel components.

Features and details

Material: stainless steel AISI 316

The screw is made of AISI 316, , a stainless alloy commonly used in technical applications and environments where the choice of material is important for durability and compatibility with existing hardware. In the nautical field, AISI 316 is often preferred when uniformity with other stainless steel elements on board is desired.

Type: self-tapping screw (Auto TS)

Being a self-tapping screw, , is designed to create its own thread in the compatible support material, simplifying many fastening operations compared to solutions that require pre-existing threads. This makes it useful in numerous assembly, repair, or component replacement interventions.

Head and recess

The product is offered in the countersunk and with cross recess, version, a common combination for quick work and practical handling with common tools in the workshop and on board. The countersunk head is typically chosen when a more flush or visually neat result is desired at the fastening point.

Family references: UNI 6955 / DIN 7982

The screw belongs to the family of self-tapping screws according to references UNI 6955 / DIN 7982. This helps to frame the type of component and compare it with equivalent screws when replacements are made or supplies are planned for maintenance.

Product identification

• Brand / supplier: Osculati S.r.l.
• Supplier product code: a4-7982-04.2×045
• Format: Auto TS 4.2×45

Typical applications (nautical and plant engineering)

The stainless steel self-tapping screw is a versatile component, useful in many processes where accessories, small hardware, and hardware parts are fastened. In particular, this Auto TS can be used in contexts such as:

• Onboard maintenanceReplacement of worn or missing screws on accessories and hardware components.
• Fittings and refittingInstallation of elements that require stainless steel screws and a neat appearance at the fastening point.
• Systems and supports: fastening brackets, cable glands, small supports or accessories, when the support is compatible with self-tapping screws.
• Workshop and shipyardQuick interventions where a screw with a cross recess and simple screwing management is useful.

For a correct choice, it is always advisable to verify compatibility with the material and thickness of the support, as well as the aesthetic and functional needs of the fastening point.

Usage and installation notes

To achieve correct and repeatable fastening, it is good practice to follow some general guidelines, especially in technical and nautical fields:

• Support check: ensure that the material is suitable for the use of self-tapping screws and that the thickness is compatible with the length of the screw.
• Preparation of the fastening point: when necessary, properly prepare the hole or seat depending on the material and the desired finish, particularly for countersunk heads.
• Suitable tool: use a cross insert in good condition to improve grip and work with greater control.
• Maintenance check: in applications subject to vibrations or usage cycles, provide periodic tightening checks according to onboard practices.

Note: if you are replacing an existing screw, always compare head type, drive and size (4.2×45) to maintain the correct match with the seat and the element to be fastened. For specific assembly needs, it is advisable to follow the instructions of the accessory or support manufacturer.

FAQ – Frequently Asked Questions

What is the Osculati Auto TS 4.2×45 screw?

It is a self-tapping Osculati screw made of AISI 316 stainless steel, in the 4.2×45 size, with a countersunk head and cross recess, identified by the code a4-7982-04.2×045.

What material is this self-tapping screw made of?

The screw is made of AISI 316 stainless steel, a material commonly used in technical applications and nautical environments.

What type of head and recess does it have?

This version is indicated as countersunk and features a cross recess, useful for practical screwing with common tools.

To which references does the family of this screw belong?

The product belongs to the family of self-tapping screws with UNI 6955 / DIN 7982 references.

For what uses is it suitable in the nautical field?

It is suitable for assembly and maintenance of hardware and onboard accessories, as well as uses in systems engineering, when the support is compatible with self-tapping screws and stainless steel screws are desired.