Piano Wire Extension Springs | McMaster-Carr

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System of Measurement

Length

Spring Type

OD

Wire Diameter

End Type

Closed and Ground

Extended Length @ Maximum Load

Spring Rate

Load

Less than 10 lb.

10 lb. to 24.9 lb.

25 lb. to 49.9 lb.

50 lb. to 99.9 lb.

100 lb. or greater

Material

18-8 Stainless Steel

Minimum Load

ID

REACH

RoHS

Compliant with Exemptions

DFARS Specialty Metals

Export Control Classification Number (ECCN)

Loop Type

Finish

Compressed Length @ Maximum Load

Hook Type

Thread Size

Hole Diameter

Diameter

Maximum Temperature

Thread Type

Military Specification

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2,373 Products

Extension Springs

Extension Springs

Extension Springs

When stretched, springs pull their ends back together

Mil. Spec. Extension Springs

Mil. Spec. Extension Springs

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

Extension Spring Assortments

Extension Spring Assortments

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

Extension Springs with Swivel-Hook Ends

Extension Springs with Swivel-Hook Ends

Ends rotate freely to handle stress and twisting without snapping

Cut-to-Length Extension Springs

Cut-to-Length Extension Springs

Cut a custom length whenever you need it

Other Products

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

Compression Springs

Compression Springs

When squeezed, springs push back to their original length

Spring Assortments

Spring Assortments

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

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