McMaster-Carr logo
    Filter by
    System of Measurement
    Length
    Attribute Image
    Compression Spring Type
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    Extended Length @ Maximum Load
    Attribute Image
    Specifications Met
    Minimum Load
    Steel Grade
    Loop Type
    Hook Type
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    26 Products

    Compression Springs

    Image of Product. Front orientation. Compression Springs.
    Squeeze these springs and they’ll push right back to their original length. When compressed, they apply steady pressure to keep components securely in place. Release the pressure and they snap back instantly, just like the tip of a ballpoint pen.
    Spring Steel—Strong and resilient, but best suited for dry environments since moisture will cause these springs to rust.
    Corrosion-Resistant 302 Stainless Steel—Won’t corrode from exposure to moisture and mild chemicals, including ammonia often found in cleaning solutions. These springs are easier to compress than steel, but can’t handle as high a load.
    Highly Corrosion-Resistant 316 Stainless Steel—Our most corrosion-resistant stainless steel springs won't degrade when exposed to salt water and harsh chemicals. They're easier to compress than steel, but can’t handle as high a load.
    Lg.,
    mm
    OD,
    mm
    ID,
    mm
    Wire Dia.,
    mm
    Compressed Lg. @
    Max. Load, mm
    Max. Load,
    lb.
    Spring Rate,
    lbf/mm
    End Type
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Spring Steel
    176.935.670.637.62.10.26ClosedDIN 2095, DIN 2098, DIN 17223500000000000000
     
    Corrosion-Resistant 302 Stainless Steel
    1764112.68.11.8Closed and GroundDIN 209550000000000000
    176.935.670.636.22.30.22ClosedDIN 209550000000000000
    177.555.051.259.8243.4Closed and GroundDIN 209550000000000000
     
    Highly Corrosion-Resistant 316 Stainless Steel
    172.251.750.2510.50.30.05Closed—1000000000000
    1731.980.5112.820.48Closed and Ground—1000000000000
    173.712.490.6112.22.80.58Closed and Ground—100000000000
    174.63.380.6111.62.30.42Closed and Ground—1000000000000
    174.63.880.369.50.40.06Closed and Ground—1000000000000
    175.993.811.0913.89.53Closed and Ground—1000000000000
    175.994.370.81124.10.82Closed and Ground—1000000000000
    175.994.770.619.21.80.23Closed and Ground—1000000000000
    175.994.970.518.510.12Closed and Ground—1000000000000
    17641137.21.8Closed and Ground—1000000000000
    176.935.670.6391.70.22Closed and Ground—1000000000000
    177.495.610.97125.51Closed and Ground—1000000000000
    177.495.870.8110.83.30.54Closed and Ground—1000000000000
    177.496.170.66101.80.26Closed and Ground—1000000000000
    177.555.051.2713.5113.4Closed and Ground—1000000000000
    178.996.811.09126.61.3Closed and Ground—1000000000000
    178.997.110.9710.84.60.74Closed and Ground—1000000000000
    178.997.670.669.41.50.2Closed and Ground—1000000000000
    1710.88.21.311.691.7Closed and Ground—100000000000
    1710.89.020.899.630.41Closed and Ground—1000000000000
     

    Extension Springs

    The farther you stretch these springs, the harder they pull to bring the two ends back together. They're commonly used to tension cable, return an air cylinder to its starting point, or hold a door closed.
    Loop End—The most secure attachment method. With fully closed loops, there's no risk of slipping off.
    Hook End—Hook into closed holes, such as hanger bolt eyes. These springs work best when kept under tension, as they're more likely to slip off than loop-end springs when tension is released. Also known as machine hook ends.
    Spring Steel—Strong and resilient, but best suited for dry environments since moisture will cause these springs to rust.
    Corrosion-Resistant 302 Stainless Steel—Won’t corrode from exposure to moisture and mild chemicals, including ammonia often found in cleaning solutions. These springs are easier to extend than steel, but can’t handle as high a load.
    Minimum Load—The amount of force required to start extending the spring.
    Maximum Load—The amount of force required to fully extend the spring.
    Load,
    lb.
    Lg.,
    mm
    OD,
    mm
    Wire Dia.,
    mm
    Extended Lg.
    @ Max. Load, mm
    Min.
    Max.
    Spring Rate,
    lbf/mm
    Pkg.
    Qty.
    Pkg.
    Loop End
    Image of Product. Front orientation. Extension Springs. Loop End.
     
    Spring Steel
    173.50.527.80.462.70.21200000000000000
     
    Hook End
    Image of Product. Front orientation. Extension Springs. Hook End.
     
    Corrosion-Resistant 302 Stainless Steel
    173.50.527.80.452.250.1820000000000000
     
    back to top