RS PRO range of spring kits manufactured from stainless steel. These spring kits are supplied in a handy and convenient storage box with individual compartments for easy identification of the springs. Spring kits are ideal for people regularly working with springs of different types and sizes, these RS PRO kits are particularly handy if you are unsure what size spring you will need for future applications.

Options include:
684-406 - 225 piece Spring Kit containing Compression Springs, Extension Springs and Torsion Springs
684-412 - 180 piece Spring Kit containing Compression Springs
684-428 - 128 piece Spring Kit containing Extension Springs

Compression springs also referred to as coil springs are very popular as they can store a large amount of energy in a small space making them ideal for a great range of uses. Coiled springs are designed so they can push back to the springs original height when they are compressed. These springs have varying degrees of stiffness which is also known as spring rate and are used to keep components from meeting.

Extension springs are similar to compression springs but have hooks or loops at either end and the springs expand or stretch when the load is applied to each end.

A torsion spring is designed to be twisted, unlike a compression spring which is designed to be compressed and an extension spring which is designed to be extended.

Kits of high quality stainless steel wire springs to DIN17224 No. 14310 or BS2056 EN58A - good resistance to corrosion and rust
Supplied in plastic compartment box with spring sizes and box layout information - easy viewing and selection of springs

684-406 Spring Kit Contents:
Compression -
Length: 14 mm to 66 mm
Depth: 2.32 mm to 13.75 mm
Extension -
Length: 18.3 mm to 76.2 mm
Depth: 3.5 mm to 12 mm
Torsion -
Length: 31.75 mm to 45 mm
Depth: 7.5 mm to 11.05 mm

684-412 Spring Kit Contents:
Compression Springs -
Length: 12.7 mm to 71 mm
Depth: 2.41 mm to 14.5 mm

684-428 Spring Kit Contents:
Extension Springs -
Length: 22.1 mm to 105 mm
Depth: 3.2 mm to 15 mm

Spring kits are ideal as they contain popular springs which can be used in a wide range of applications.

Compression springs are a very popular spring and can be used in a number of different industries. This type of spring can be used in
ball point pens, vehicles, mobile phones and values.

Extension spring applications include garage doors, trampolines, white goods and tools.

Torsion springs have a tightening or twisting force and applications for these springs include counterbalance weights in garage doors, digital cameras, mouse traps and vehicle suspension.

Why RS PRO?
RS PRO is our own brand range and brings you a wide range of high-quality, great value products offering you more choice. Trusted by engineers all over the world, every part of every RS PRO product has been rigorously tested against demanding industry standards; they’re only given the RS PRO seal of approval if we’re confident of their exceptional quality, which means you can be confident too.

Compression and extension springs right-hand helix, torsion springs left-hand helix.