Aisi 316 bolts 8×30 – code: a4-933-08×030 – Osculati

Hex head bolts in AISI 316 stainless steel (Osculati)

I hex head bolts/screws in AISI 316 stainless steel Osculati are a practical solution for fastenings and assemblies where stainless steel bolts are desired, particularly in contexts such as nautics shape and the’onboard systems. This item is identified by supplier code a4-933-08×030 and is offered in the size 8×30, useful as a replacement or for new installations when the required sizes match.

The hexagonal head is designed to facilitate tightening with common tools, while the fully threaded threading offers flexibility in assemblies with nuts and washers or in brackets and fastenings on prepared components. As with any technical hardware intervention, it is advisable to always check dimensional compatibility and the correct pairing of materials according to the application.

Product features and details

Material: stainless steel AISI 316

The bolt is made of AISI 316 stainless steel, a frequent choice when stainless steel bolts are preferred for use in technical environments and, in general, for applications where a material suitable for demanding contexts is sought. In the nautical field, stainless steel is often selected for components exposed or subject to periodic maintenance, thanks to its corrosion-resistant nature compared to non-stainless steels (final performance always depends on usage conditions, pairings, and maintenance).

Geometry: hex head

The hexagonal head allows orderly and repeatable tightening with standard wrenches and sockets, being convenient both during installation and disassembly for maintenance. It is a very common shape in technical hardware because it facilitates access and allows working with common tools even in not perfectly accessible spaces.

Threading: fully threaded

This item belongs to the family of fully threaded hex head screws/bolts (reference indicated: UNI 5739 / DIN 933). Full threading is appreciated when maximum versatility in nut positioning is desired, in use with washers or tightening on variable thicknesses, compatible with the fastening design.

Format and identification

• Format: 8×30
• Supplier product code: a4-933-08×030
• Supplier: Osculati S.r.l.

To avoid errors during ordering or replacement, it is good practice to always compare the required format with the existing component or with the plant's drawing/technical note, also checking the type of nut/washer and the possible presence of inserts or female threads already present on the support.

Typical applications (nautical and plant engineering)

These stainless steel bolts can be used in many situations of fixing and assembly where the hex head and full threading are functional.

Examples of use

• Bracket and support fastenings on structures or panels, when the use of nuts and washers is planned.
• Component assemblies in onboard plant engineering, where stainless steel bolts are preferred for material uniformity.
• Spare parts for replacement of existing bolts with the same format, in maintenance interventions.
• Installations of accessories and technical small parts, compatible with thicknesses and tightening configuration.

The choice of the correct bolt always depends on the type of joint, the paired materials, and operating conditions. In case of doubt, it is advisable to check the fastening configuration (through or threaded hole, presence of washers, space for the tool) before purchase.

Usage and operational notes

Dimensional check and compatibility

Before installation or replacement, check:

• Format required (in this case 8×30) and correspondence with the component to be replaced.
• Thickness of the materials to be joined and space available for nut/washers.
• Accessibility to the hex head for the tightening tool.
• Material pairing (bolt, nut, washers and fixed parts), depending on the environment and use.

General installation instructions

For a neat assembly, use washers and nuts suitable for the application and proceed with progressive and controlled tightening. In nautical and plant engineering fields, it is good practice to periodically inspect fastenings subject to vibrations or maintenance cycles, intervening if necessary according to the procedures provided by the installation.

Osculati Spare Parts: quick identification

The reference Osculati and the code a4-933-08×030 help to quickly identify the item when managing spare parts or when you want to maintain continuity with already installed components. When ordering, always provide the code and size to reduce the risk of incompatibility.

FAQ – Frequently Asked Questions

What is the material of these Osculati bolts?

They are made of AISI 316 stainless steel, a common choice when stainless bolts are preferred for technical uses, including nautical applications.

What type of head do the bolts have?

They have a hexagonal head, practical for tightening with standard wrenches and sockets.

Is the threading partial or complete?

The item is indicated as a fully threaded hex head screw/bolt (family UNI 5739 / DIN 933).

What is the format and product code?

The size is 8×30 and the supplier product code is a4-933-08×030 (Osculati).

What uses are they indicated for?

They are suitable for fastening and assembly in the nautical field and onboard plant engineering, as replacements or for new installations, always checking dimensional compatibility and material pairings.