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    20 Products

    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.
    OD
    Wire
    Dia.
    Extended Lg.
    @ Max. Load
    Min.
    Max.
    Spring Rate,
    lbf/in
    Pkg.
    Qty.
    Pkg.
    Loop End
    Image of Product. Front orientation. Extension Springs. Loop End.
     
    Spring Steel
    7.5"1.25"0.095"24.04"2.3325.861.415108N856000000
    7.5"1.25"0.115"17.92"3.9644.033.815108N86500000
    7.5"1.25"0.135"14.5"6.1868.628.915108N87400000
    7.5"1.25"0.148"13.04"7.9588.3814.515108N88300000
    7.5"1.5"0.125"19.13"4.246.643.615108N88900000
    7.5"1.5"0.148"15.22"6.774.498.815108N89500000
    7.5"1.5"0.177"12.44"10.97121.922.515108N89900000
    7.5"2"0.207"12.73"12.88143.122215108N92700000
     
    Corrosion-Resistant 302 Stainless Steel
    7.5"1"0.105"12.04"7.5224.643.77194135K83800000
    7.5"1.125"0.091"17.06"3.1614.951.23194135K89100000
     
    Hook End
    Image of Product. Side1 orientation. Extension Springs. Hook End.
     
    Spring Steel
    7.5"1.25"0.148"13.04"7.9588.3814.515667N36300000
    7.5"1.5"0.177"12.44"10.97121.922.515667N38600000
    7.5"2"0.177"15.1"8.3792.9511.115667N41600000
     
    Corrosion-Resistant 302 Stainless Steel
    7.5"1.25"0.095"24.04"1.9421.541.1718897N10600000
    7.5"1.25"0.135"14.5"5.1557.167.4118897N12400000
    7.5"1.25"0.148"13.04"6.6273.6212.0818897N13300000
    7.5"1.5"0.148"15.22"5.5862.057.3318897N14800000
     

    Linear Wave Springs

    Image of Product. Front orientation. Linear Wave Springs.
    Image of Attribute. Side1 orientation. Contains Annotated. Linear Wave Springs.
    Similar to disc springs, these linear springs are good for absorbing vibration and filling in gaps along the length of an object. Their thin profile allows them to fit in tight spots.
    Wd.
    Lg.
    Ht.
    Compressed Ht.
    @ Working Load
    Working
    Load, lb.
    Material
    Each
    0.02" Thick
    0.25"7.5"0.25"0.15"44High-Carbon Steel
    		1844N1600000
    0.375"7.5"0.25"0.15"74High-Carbon Steel
    		1844N170000
     

    Overload-Prevention Extension Springs

    Image of Product. Front orientation. Extension Springs. Overload-Prevention Extension Springs.
    Stop overstretching before it starts—drawbars limit how far these springs extend to prevent breaking. They’re best for tensioning tasks, such as pulling and keeping fences and gates closed.
    Loop End—The most secure attachment method. With fully closed loops, there's no risk of slipping off.
    Spring Steel—Strong and resilient, but best suited for dry environments since moisture will cause these springs to rust.
    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
    Lg.
    OD
    Wire
    Dia.
    Extended Lg.
    @ Max. Load
    Min.
    Max.,
    lb.
    Spring Rate,
    lbf/in
    Each
    Loop End
     
    Spring Steel
    7.5"1.375"0.148"9.6"Not Rated160759630K93000000
     
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