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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Omschrijving Prijs 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-stocknr. 727-749
FabrikantnummerVSTI3/8EDCF
FabrikantParker
3,03 €
Each (In a Pack of 5)
Aantal stuks
- Hydraulic Blanking Plug - Steel Zinc Plated 3/8in G - - - - 400bar +100°C -30°C
RS-stocknr. 367-5821
Fabrikantnummer0913 00 10
FabrikantLegris
1,81 €
Each (In a Pack of 3)
Aantal stuks
R 1/8 Male Hydraulic Elbow Threaded Adaptor G 1/8 Female Brass Nickel Plated 1/8in R Male 1/8in Female G 60bar +80°C -10°C
RS-stocknr. 120-867
FabrikantnummerHF17
FabrikantHi-Force
25,94 €
Each
Aantal stuks
NPT 3/8-18 Male Hydraulic Straight Threaded Adaptor NPT 3/8-18 Male Steel - 3/8-18 NPT Male 3/8-18 Male NPT 700bar - -
RS-stocknr. 367-5922
Fabrikantnummer0915 00 13
FabrikantLegris
3,147 €
Each (In a Pack of 3)
Aantal stuks
G 1/4 Female Hydraulic Tee Threaded Adaptor G 1/4 Female Brass Nickel Plated 1/4in G Female 1/4in Female G 20bar +120°C -20°C
RS-stocknr. 797-2078
Fabrikantnummer6HMK4S
FabrikantParker
2,775 €
Each (In a Pack of 2)
Aantal stuks
G 3/8 Male Hydraulic Straight Threaded Adaptor G 3/8 Male Steel Zinc Plated - G Male - Male G 350bar - -
RS-stocknr. 807-435
FabrikantnummerR11/2EDX1/4
FabrikantParker
3,18 €
Each (In a Pack of 2)
Aantal stuks
G 1/2 Male Hydraulic Straight Threaded Reducer G 1/4 Female Steel Zinc Plated 1/2in G Male 1/4in Female G 630bar +100°C -30°C
RS-stocknr. 120-873
FabrikantnummerHF14
FabrikantHi-Force
24,50 €
Each
Aantal stuks
NPT 3/8-18 Female Hydraulic Straight Threaded Adaptor NPT 3/8-18 Female Steel - 3/8-18 NPT Female 3/8-18 Female NPT 700bar - -
RS-stocknr. 497-971
Fabrikantnummer4H6K4S
FabrikantParker
2,245 €
Each (In a Pack of 2)
Aantal stuks
G 1/4 Female Hydraulic Straight Threaded Adaptor G 1/4 Female Steel Yellow Chromated, Zinc Plated 1/4in G Female 1/4in Female G 450bar +120°C -40°C
RS-stocknr. 871-2247
FabrikantnummerGE10LMEDCF
FabrikantParker
4,54 €
Each
Aantal stuks
- Hydraulic Straight Threaded Adaptor M14 x 1.5 Male Steel Zinc Chromium 6 - - - - Male Metric 500bar - -
RS-stocknr. 183-6248
Fabrikantnummer6-6F3MK4S
FabrikantParker
1,79 €
Each (In a Pack of 2)
Aantal stuks
G 3/8 Male Hydraulic Straight Threaded Adaptor R 3/8 Male Steel Yellow Chromated, Zinc Plated 3/8in G Male 3/8in Male R 380bar +120°C -40°C
RS-stocknr. 283-1367
FabrikantnummerFZ1616
FabrikantEnerpac
36,13 €
Each
Aantal stuks
NPT 3/8 Female Hydraulic Elbow Threaded Adaptor NPT 3/8 Male - - 3/8in NPT Female 3/8in Male NPT 700bar - -
RS-stocknr. 367-5944
Fabrikantnummer0915 00 21
FabrikantLegris
7,693 €
Each (In a Pack of 3)
Aantal stuks
G 1/2 Female Hydraulic Tee Threaded Adaptor G 1/2 Female Brass Nickel Plated 1/2in G Female 1/2in Female G 60bar +120°C -20°C
RS-stocknr. 183-6260
Fabrikantnummer8F3MK4S
FabrikantParker
2,84 €
Each (In a Pack of 2)
Aantal stuks
G 1/2 Male Hydraulic Straight Threaded Adaptor R 3/8 Male Steel Yellow Chromated, Zinc Plated 1/2in G Male 3/8in Male R 310bar +120°C -40°C
RS-stocknr. 807-463
FabrikantnummerRI1EDX1/2CF
FabrikantParker
8,63 €
Each (In a Pack of 2)
Aantal stuks
G 1 Male Hydraulic Straight Threaded Reducer G 1/2 Female Steel Zinc Plated 1in G Male 1/2in Female G 315bar +100°C -30°C
RS-stocknr. 367-5900
Fabrikantnummer0912 00 21
FabrikantLegris
6,187 €
Each (In a Pack of 3)
Aantal stuks
G 1/2 Female Hydraulic Elbow Threaded Adaptor G 1/2 Female Brass Nickel Plated 1/2in G Female 1/2in Female G 60bar +80°C -10°C
RS-stocknr. 183-6204
Fabrikantnummer4-4F3MK4S
FabrikantParker
1,375 €
Each (In a Pack of 2)
Aantal stuks
G 1/4 Male Hydraulic Straight Threaded Adaptor R 1/4 Male Steel Yellow Chromated, Zinc Plated 1/4in G Male 1/4in Male R 450bar +120°C -40°C
RS-stocknr. 498-312
Fabrikantnummer6PNK4S
FabrikantParker
1,928 €
Each (In a Pack of 5)
Aantal stuks
- Hydraulic Blanking Plug - Steel Yellow Chromated, Zinc Plated 3/8in G - - - - 380bar +120°C -40°C
RS-stocknr. 871-2278
FabrikantnummerVSTI18x1.5EDCF
FabrikantParker
5,51 €
Each
Aantal stuks
- Hydraulic Blanking Plug - Steel Zinc Plated - Metric - - - - 400bar - -
RS-stocknr. 914-9511
Fabrikantnummer59972
FabrikantElesa
1,60 €
Each
Aantal stuks
- Hydraulic Filling & Drain Plug - Polyamide Based Technopolymer Matte 1/8in G - - - - - +100°C -30°C
RS-stocknr. 807-514
FabrikantnummerWH12LRCF
FabrikantParker
18,78 €
Each
Aantal stuks
G 3/8 Hydraulic Banjo Compression Tube Fitting - Mild Steel Zinc Plated 3/8in G - - - - 315bar +120°C -40°C