Hydraulic Fittings

Hydraulic fittings form part of a hydraulic system which connects hoses, pipes and tubes. There are various fittings which are used to connect the system together and help the hydraulic fluid to flow through. Hydraulic fittings, or hose fittings, are used to connect hydraulic hoses and pipes to other components such as valves and pumps.

Hydraulic fittings will usually have a male and/or female connection which join to other components. The connections are usually threaded and there are several thread standards available, such as JIC, BSP and BSPP. BSP male threads will seal with BSP female threads, for example. Popular materials include plastic, brass and stainless steel fittings.

Types of hydraulic fittings:

  • Plugs
  • Adapters
  • Couplings
  • Unions
  • Reducers
  • Elbows

How are hydraulic fittings attached?

There are several methods used to attach a hydraulic fitting. Examples include:

  • Compression fittings provide water tight connections by using pressure to seal the connection. They usually use a compression nut which, when tightened, removes space between the ferrule and the pipe.
  • Threaded fittings have screw threads on both sides of the connection. They accept connections with compatible threads and screw together for a secure connection. Not all threads provide a tight seal and may benefit from additional coatings or seals.
  • Crimped fittings require crimping of the hose to the fitting. You may require a crimping tool to achieve this.

Thread Types

Hydraulics machines are used all across the world and there are many components used in each system. Thread types are used to help make parts easily identifiable and easy to maintain and replace. Some examples of thread standards include:

  • NPT stands for National Pipe Thread where the threads are at a 60° angle. There is also NPT (National Pipe Taper) and NPS (National Pipe Straight).
  • BSP fittings stands for British Standard Pipe where the angle of the threads is 55°. This standard includes BSPT (British Standard Pipe Taper) and BSPP (British Standard Parallel Pipe).
  • Metric threads are specified by their diameter and pitch in millimetres (mm).

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Description Price Connector A Hydraulic Fitting Type Connector B Material Finish Connector A - Thread Size Connector A - Thread Standard Connector A - Gender Connector B - Thread Size Connector B - Gender Connector B - Thread Standard Maximum Operating Pressure Maximum Operating Temperature Minimum Operating Temperature
RS Stock No. 367-5893
Mfr. Part No.0912 00 17
BrandLegris
TWD138.00
Each (In a Pack of 3)
units
G 3/8 Female Hydraulic Elbow Threaded Adaptor G 3/8 Female Brass Nickel Plated 3/8in G Female 3/8in Female G 60 bar +80°C -10°C
RS Stock No. 367-5900
Mfr. Part No.0912 00 21
BrandLegris
TWD217.00
Each (In a Pack of 3)
units
G 1/2 Female Hydraulic Elbow Threaded Adaptor G 1/2 Female Brass Nickel Plated 1/2in G Female 1/2in Female G 60 bar +80°C -10°C
RS Stock No. 367-5871
Mfr. Part No.0912 00 10
BrandLegris
TWD74.70
Each (In a Pack of 3)
units
G 1/8 Female Hydraulic Elbow Threaded Adaptor G 1/8 Female Brass Nickel Plated 1/8in G Female 1/8in Female G 60 bar +80°C -10°C
RS Stock No. 367-5821
Mfr. Part No.0913 00 10
BrandLegris
TWD69.00
Each (In a Pack of 3)
units
R 1/8 Male Hydraulic Elbow Threaded Adaptor G 1/8 Female Brass Nickel Plated 1/8in R Male 1/8in Female G 60 bar +80°C -10°C
RS Stock No. 326-8940
Mfr. Part No.3118 04 10
BrandLegris
TWD114.20
Each (In a Pack of 5)
units
G 1/8 Hydraulic Banjo Compression Tube Fitting - Nickel Plated Brass, Nitrile Rubber, Polymer, Stainless Steel Nickel Plated (Sub Base) 1/8in G - - - - 20 bar +80°C -20°C
New
RS Stock No. 215-0210
Mfr. Part No.3618 08 10
BrandLegris
TWD465.20
Each (In a Pack of 10)
units
- - - Nickel Plated Brass Nickel Plated (Sub Base) - - - - - - 30 bar - -
RS Stock No. 367-5916
Mfr. Part No.0915 00 10
BrandLegris
TWD80.30
Each (In a Pack of 3)
units
G 1/8 Female Hydraulic Tee Threaded Adaptor G 1/8 Female Brass Nickel Plated 1/8in G Female 1/8in Female G 20 bar +120°C -20°C
RS Stock No. 367-5865
Mfr. Part No.0913 00 21
BrandLegris
TWD183.30
Each (In a Pack of 3)
units
R 1/2 Male Hydraulic Elbow Threaded Adaptor G 1/2 Female Brass Nickel Plated 1/2in R Male 1/2in Female G 60 bar +80°C -10°C
New
RS Stock No. 215-0212
Mfr. Part No.3618 10 17
BrandLegris
TWD661.40
Each (In a Pack of 10)
units
- - - Nickel Plated Brass Nickel Plated (Sub Base) - - - - - - 30 bar - -
RS Stock No. 326-8956
Mfr. Part No.3118 04 19
BrandLegris
TWD143.00
Each (In a Pack of 5)
units
M5 x 0.8 Hydraulic Banjo Compression Tube Fitting - Nickel Plated Brass, Nitrile Rubber, Polymer, Stainless Steel Nickel Plated (Sub Base) - Metric - - - - 20 bar +80°C -20°C
New
RS Stock No. 215-0205
Mfr. Part No.3618 04 19
BrandLegris
TWD244.80
Each (In a Pack of 10)
units
- - - Nickel Plated Brass Nickel Plated (Sub Base) - - - - - - 30 bar - -
New
RS Stock No. 215-0147
Mfr. Part No.3118 08 17
BrandLegris
TWD261.10
Each (In a Pack of 10)
units
- - - Polymer Nickel Plated (Sub Base) - - - - - - 20 bar - -
New
RS Stock No. 215-0209
Mfr. Part No.3618 06 19
BrandLegris
TWD316.90
Each (In a Pack of 10)
units
- - - Nickel Plated Brass Nickel Plated (Sub Base) - - - - - - 30 bar - -
RS Stock No. 326-8984
Mfr. Part No.3118 08 10
BrandLegris
TWD149.40
Each (In a Pack of 5)
units
G 1/8 Hydraulic Banjo Compression Tube Fitting - Nickel Plated Brass, Nitrile Rubber, Polymer, Stainless Steel Nickel Plated (Sub Base) 1/8in G - - - - 20 bar +80°C -20°C
New
RS Stock No. 215-0211
Mfr. Part No.3618 08 13
BrandLegris
TWD447.70
Each (In a Pack of 10)
units
- - - Nickel Plated Brass Nickel Plated (Sub Base) - - - - - - 30 bar - -
RS Stock No. 367-5944
Mfr. Part No.0915 00 21
BrandLegris
TWD275.70
Each (In a Pack of 3)
units
G 1/2 Female Hydraulic Tee Threaded Adaptor G 1/2 Female Brass Nickel Plated 1/2in G Female 1/2in Female G 60 bar +120°C -20°C
RS Stock No. 367-5887
Mfr. Part No.0912 00 13
BrandLegris
TWD103.70
Each (In a Pack of 3)
units
G 1/4 Female Hydraulic Elbow Threaded Adaptor G 1/4 Female Brass Nickel Plated 1/4in G Female 1/4in Female G 60 bar +80°C -10°C
RS Stock No. 326-8978
Mfr. Part No.3118 06 13
BrandLegris
TWD142.60
Each (In a Pack of 5)
units
G 1/4 Hydraulic Banjo Compression Tube Fitting - Nickel Plated Brass, Nitrile Rubber, Polymer, Stainless Steel Nickel Plated (Sub Base) 1/4in G - - - - 20 bar +80°C -20°C
RS Stock No. 367-5859
Mfr. Part No.0913 00 17
BrandLegris
TWD123.30
Each (In a Pack of 3)
units
R 3/8 Male Hydraulic Elbow Threaded Adaptor G 3/8 Female Brass Nickel Plated 3/8in R Male 3/8in Female G 60 bar +80°C -10°C
RS Stock No. 367-5843
Mfr. Part No.0913 00 13
BrandLegris
TWD87.00
Each (In a Pack of 3)
units
R 1/4 Male Hydraulic Elbow Threaded Adaptor G 1/4 Female Brass Nickel Plated 1/4in R Male 1/4in Female G 60 bar +80°C -10°C