Tensioner Springs | McMaster-Carr

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System of Measurement

Length

OD

Spring Type

End Type

Wire Diameter

Extended Length @ Maximum Load

Spring Rate

Material

Stainless Steel

Load

Less than 50 lb.

50 lb. to 99.9 lb.

100 lb. to 199.9 lb.

200 lb. to 249.9 lb.

250 lb. or greater

Minimum Load

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Hook Type

RoHS

REACH

Export Control Classification Number (ECCN)

DFARS Specialty Metals

Loop Type

Performance

Constant Tension

Corrosion Resistant

Overload Prevention

ID

Finish

Shaft Diameter

Deflection Angle

Roller Chain Trade Number

Thread Size

Diameter

How can we improve?

4,782 Products

Extension Springs

Extension Springs

Extension Springs

When stretched, springs pull their ends back together

Overload-Prevention Extension Springs

Overload-Prevention Extension Springs

Drawbars stop overstretching before it starts to prevent breaking

Cut-to-Length Extension Springs

Cut-to-Length Extension Springs

Cut a custom length whenever you need it

Mil. Spec. Extension Springs

Mil. Spec. Extension Springs

Meet strict U.S. military standards for material and construction

Extension Springs with Swivel-Hook Ends

Extension Springs with Swivel-Hook Ends

Ends rotate freely to handle stress and twisting without snapping

Extra-Stretch Extension Springs

Extra-Stretch Extension Springs

Stretch up to three times their original length with lasting elasticity

Extension Spring Assortments

Extension Spring Assortments

Keep springs in different lengths, ODs, and wire diameters on hand

Other Products

Spring Installation and Removal Tools

Spring Installation and Removal Tools

Grip and compress springs when assembling and replacing

Chain and Belt Tensioners

Chain and Belt Tensioners

Control tension on your roller chain or belt for smooth operation and a long service life

Springs for Locking Pliers

Springs for Locking Pliers

Change out worn or broken springs in the handle of your locking pliers

Overhead Door Spring Winding Rods

Overhead Door Spring Winding Rods

Keep your overhead door balanced on both tracks for smooth, even opening and closing

V-Belt Drive Pulleys

V-Belt Drive Pulleys

Pair with a V-belt to transfer motion from a rotating shaft

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)