Hydraulic Fittings
Verified by Mel Sykes, Industrial Supply Chain Specialist - April 2026
valves stored in an organized workshop environment." width="800" height="533" loading="lazy" style="width:100%;height:auto;border-radius:8px">| Specification | Details |
|---|---|
| Types | BSP parallel, BSP taper, JIC 37 degree, metric DIN 2353, ORFS |
| Materials | Carbon steel zinc plated, stainless steel 316 |
| Pressures | Up to 500 bar |
| Standards | BS 5200 (BSP), SAE J514 (JIC), ISO 8434 (metric) |
What are Hydraulic Fittings?
Hydraulic fittings are components used to connect and manage fluid flow in hydraulic systems. They come in various types, such as BSP parallel, JIC 37-degree, and metric DIN 2353, each designed for specific applications based on pressure requirements and environmental conditions.
Types and variants
Hydraulic Fittings include several common types:
- BSP Parallel (BS 5200): These fittings feature a parallel thread design for secure connections. Common dimensions range from 1/8" to 3".
- BSP Taper: Also known as British Standard Pipe Tapered, these are used in high-pressure systems up to 500 bar.
- JIC 37-degree (SAE J514): These fittings have a flare angle of 37 degrees and are suitable for pressures up to 6000 psi. They typically range from 1/8" to 2".
- Metric DIN 2353: Designed according to the ISO standard, these metric fittings range in size from M6 to G3/4".
- ORFS (O-Ring Face Seal): These are high-pressure fittings used up to 700 bar and often feature a recessed or protruding O-ring groove.
Materials and specifications
Hydraulic Fittings can be made of carbon steel, stainless steel, brass, or aluminium.
- Carbon Steel: Commonly zinc plated for corrosion resistance in environments with moderate temperatures (-25°C to +160°C).
- Stainless Steel 316 (EN 1.4401): Suitable for high-pressure applications and harsh conditions due to its higher tensile strength and better chemical resistance.
Selection criteria
Choosing the right fitting depends on several factors:
- Pressure requirements
- Temperature range of the application
- Material compatibility with hydraulic fluids
- Size and type of hose or pipe being connected
For instance, if you're working in a high-pressure system up to 500 bar, a stainless steel 316 fitting would be ideal. Conversely, carbon steel zinc plated is better suited for lower pressure applications and cost-sensitive projects.
UK suppliers
MLC lists verified suppliers from Companies House that adhere to stringent quality standards set by trade bodies like the British Industrial Fasteners Association (BIAFD) and the British Pump Manufacturers' Association (BPMA). These suppliers offer a wide range of hydraulic fittings, ensuring reliability and durability in industrial applications.
Common applications
Hydraulic Fittings are used across various industries:
- Manufacturing: For machinery that requires precise fluid control.
- Construction: In equipment like excavators and cranes where high pressures and rugged environments are common.
- Automotive: In power steering systems and hydraulic brakes for vehicles.
- Marine: On ships and boats, where saltwater corrosion is a significant concern.
For example, the automotive industry often uses JIC 37-degree fittings due to their reliability under extreme conditions. In construction, metric DIN 2353 fittings are preferred because they offer flexibility in size and pressure ratings, making them suitable for a wide range of equipment.
References
Verified UK Suppliers
| Company | Company No. | Location |
|---|---|---|
| Sharpe Hydraulic Services Ltd | 07686672 | 78 Helme Lane, Meltham, Holmfirth, West Yorkshire, |
| Yiheng Dexuan Co., Limited | 14892771 | 69 Aberdeen Avenue, Cambridge, CB2 8DL |
| Mist-Air Dust Suppression Limited | 01228824 | Hillcrest, Penybont, Oswestry, SY10 9JF |
| Thermal Engineering International Uk Limited | 14356464 | C/O Tmf Group, 13th Floor, One Angel Court, London |
| Gravloc Uk Limited | 06456336 | Unit E Sir Alfred Owen Way, Pontygwindy Industrial |
Frequently Asked Questions
What are Hydraulic Fittings?
Hydraulic Fittings are engineering components used in industrial applications. Browse verified UK suppliers on MLC.
Where can I buy Hydraulic Fittings in the UK?
MLC lists verified UK hydraulic fittings suppliers with Companies House data. Browse by product category or search by location.
What are Hydraulic Fittings and why are they important in hydraulic systems?
Hydraulic fittings are components used to connect and manage fluid flow in hydraulic systems. They ensure secure connections and efficient transfer of pressure, making them important for the proper functioning of machinery.
Which types of Hydraulic Fittings are commonly available on mlc.org.uk?
Common types include BSP parallel (BS 5200), BSP taper, JIC 37-degree (SAE J514), metric DIN 2353, and ORFS fittings, each designed for specific pressure requirements and applications.
How do you choose the right type of Hydraulic Fitting for a high-pressure system?
For high-pressure systems up to 500 bar, BSP taper or metric DIN 2353 fittings are suitable options. These types provide reliable connections under extreme conditions.
What standards should UK engineers consider when selecting Hydraulic Fittings?
Engineers should consider BS 5200 for BSP parallel and taper fittings, SAE J514 for JIC 37-degree fittings, and ISO 8434 for metric DIN 2353 fittings to ensure compliance with industry standards.
Where can UK engineers find reliable suppliers of Hydraulic Fittings?
Engineers in the UK can visit mlc.org.uk or contact industrial supply chain specialists like Mel Sykes to find verified suppliers offering a range of hydraulic fitting types and materials.
What are the typical materials used in manufacturing Hydraulic Fittings, and what are their benefits?
Common materials include carbon steel zinc plated for durability and stainless steel 316 for corrosion resistance. Stainless steel is preferred in environments with high humidity or exposure to chemicals.
How do the costs of different types of Hydraulic Fittings compare in terms of availability on mlc.org.uk?
Costs vary depending on material quality, pressure rating, and type. For example, stainless steel 316 fittings tend to be more expensive but offer better longevity compared to carbon steel zinc plated versions.
What is the maximum pressure capability of Hydraulic Fittings listed on mlc.org.uk?
The hydraulic fittings available can handle pressures up to 500 bar, suitable for a wide range of industrial applications requiring strong and reliable connections.