Mechanical Springs | McMaster-Carr

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Spring Type

System of Measurement

Length

Wire Diameter

Material

End Type

Straight Wire with Double Loop

Spring Rate

Shaft Diameter

Extended Length @ Maximum Load

Compressed Length @ Maximum Load

Load

Hole Diameter

RoHS

Compliant with Exemptions

Not Compliant

DFARS Specialty Metals

REACH

Export Control Classification Number (ECCN)

Minimum Load

Thickness

Deflection Angle

Extended Length

Finish

Zinc Yellow-Chromate Plated

Screw Size

Wire Thickness

Height

12,016 Products

Power Transmission

Compression Springs

When squeezed, springs push back to their original length

2,872 products

Extension Springs

As stretched, springs become increasingly harder to pull

4,746 products

Torsion Springs

Wrap around a shaft or rod to maintain pressure on objects as they rotate

560 products

Strip Springs

Wrap around a shaft and extend to pull objects in a linear direction

77 products

Disc Springs

Maintain tension and separate components on shafts, under bolt heads, and at the ends of valves

1,680 products

Spring Assortments

Keep extension, compression, and torsion spring types of various sizes on hand

7 products

Rotor Springs

Wind to store power, then release to create rotary motion—similar to winding a wristwatch

10 products

Linear Wave Springs

Absorb vibration and fill in gaps along the length of an object

22 products

Die Springs

Withstand heavy loads with minimal compression in high-impact jobs such as punching and stamping

484 products

Garter Springs

Exert radial force from all directions to maintain pressure on shafts or in seals

74 products

Gas Springs

Support the weight of doors, hatches, and lids to assist opening and closing

812 products

Bearing Lock Washers

Lock bearing nuts in place to prevent loosening due to vibration

103 products

Building and Machinery Hardware

Door Holders

Mount to doors, walls, or floors to keep doors open

1 product

Door Springs

Extend and snap back to pull storm doors and gates closed

18 products

Door Chains

Keep free-swinging doors from opening too far and prevent damage to hinges, doors, and walls

7 products

Measuring and Inspecting

Force Gauges

Test objects to see how much tension and compression force they can bear

11 products

Fastening and Joining

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

30 products

Lock Washers

Resist vibration to prevent fasteners from loosening

468 products