Gas Spring End Fittings

End fittings connect a gas spring or traction gas spring to the mounting points of a flap, lid or machine cover. They screw onto the thread of the gas spring and give a rigid, pivoting or angle-compensating connection. Seven types for mounting threads M4, M6, M8 and M10: ball joints, ball sockets, clevis ends, eye ends, end bearings, extension rods and axial joints, in zinc plated steel, stainless steel, plastic, aluminium and zinc diecast. Also release systems for lockable gas springs (M10): lever release and Bowden cable release. Click a type to filter the table, and remember that the length R of the fittings at both ends adds to the installed length.

Fitting type
Mounting thread M
Length R (mm)
Thickness T (mm)
Hole Ø H (mm)
Material
Ball/pin Ø b (mm)
1-9Type: design of the end fitting, Type 1 to Type 7.
MMounting thread: screws onto the thread of the gas spring. Size and pitch must match.
RLength from the gas spring connection to the pivot point (centre of ball or hole). It adds to the installed length at each end.
OverallOverall length: total length of the end fitting. Use it to check the available space.
TThickness of the fitting at the mounting point, for example on eye ends. Relevant for the space between brackets or lugs.
bDiameter of the matching ball or pin. Must match the mating part.
HDiameter of the through-hole in eye ends, clevis ends and bearing ends. Sets the pin diameter.
M22nd thread: thread on the mounting side, for example on ball joints, axial joints and extensions.
LLever length: effective length of the release lever. Affects operating travel, space and mechanical advantage.
SBowden cable length: overall length of the cable. Must suit the distance and routing to the operating point.
MaterialMaterial or surface: zinc plated steel, stainless steel, plastic, aluminium or zinc diecast.

Not every dimension applies to every type. A dash means the value does not apply.

Showing 110 of 110 fittings
Part No. Type Mounting threadM · mm LengthR · mm Overall lengthmm ThicknessT · mm Hole ØH · mm L / Smm Material Stock Price Ex. VAT
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How to choose a gas spring end fitting

1
Thread

Check the thread on the piston rod and the cylinder. The mounting thread M of the fitting must match in size and pitch.

2
Movement

Decide if the connection can be rigid, should pivot around one axis (eye or clevis) or must follow a changing angle during the stroke (ball joint, ball socket, end bearing or axial joint).

3
Mating part

Compare the ball/pin diameter b or the hole diameter H with the existing mounting point, and check the 2nd thread M2 where there is one.

4
Length and space

End fittings change the distance between the mounting points. Add the length R at both ends, and check that thickness T, ball size and joint movement do not collide with brackets.

The seven types
1Ball Joint
Complete articulated joint made of a ball socket and a ball stud. Allows angular movement in several directions, for moving flaps, lids and hatches.
2Ball Socket
Snaps onto a matching ball stud. Compensates for small angular misalignment and is quick to fit. The ball diameter b must match the mating part.
3Clevis End
U-shaped fitting connected with a pin. Allows a defined pivoting movement around one axis and suits lug-shaped mounting points.
4Eye End
Compact fitting with a through-hole for mounting on a pin. Leave enough radial clearance so that no side load acts on the gas spring.
5End Bearing
Articulated fitting with a spherical bearing around the mounting hole. Compensates for angular misalignment and suits changing mounting angles.
6Extension Rod
Rigid intermediate piece that extends the connection or adjusts the installed length. It does not allow any articulated movement.
7Axial Joint
Movable joint with a 2nd thread M2 for the mounting point. Compensates for angles between the gas spring and the mounting point.
8Lever release
Release system for lockable gas springs, mounted directly on the release connection. Operating the lever presses the release pin and unlocks the gas spring. For gas springs that are easy to reach.
9Bowden cable release
Release system for lockable gas springs, operated remotely. The Bowden cable transfers the movement from a hand or foot lever to the release pin. For concealed gas springs or an operating point away from the spring.
Installed length

Centre distance = gas spring length + R + R

The centre distance between the mounting points is the gas spring length plus the length R of the fitting at each end. A replacement must match not only thread and shape, but also length, pin or ball diameter and freedom of movement.

Load and alignment

Gas springs should only be loaded axially. Ball joints and end bearings can take up small angular errors, but cannot correct mounting points in the wrong position. Eye and clevis ends need enough clearance so that they do not twist or jam.

Material

Choose zinc plated steel for dry, indoor use and stainless steel for humid environments, outdoor use or where cleanliness matters. Plastic, aluminium and zinc diecast fittings save weight in light applications.

Choosing a complete gas spring? The configurator matches springs and end fittings for you. Open the configurator →