McMaster-Carr logo
    Filter by
    System of Measurement
    Length
    Compressed Length @ Maximum Load
    Attribute Image
    Compression Spring Type
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Loop Type
    Hook Type
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    20 Products

    Tight-Space Compression Springs

    Image of Product. Front orientation. Contains Annotated. Compression Springs.
    Fit into the tightest spots with full compression. These conical springs nest their coils inside each other as they compress, shrinking to about two wire widths. You'll often find them in battery holders and push-button switches.
    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.
    OD
    ID
    Lg.
    (A)
    (B)
    (A)
    (B)
    Wire
    Dia.
    Compressed Lg.
    @ Max. Load
    Max. Load,
    lb.
    Spring Rate,
    lbf/in
    End
    Type
    Pkg.
    Qty.
    Pkg.
    Corrosion-Resistant 302 Stainless Steel
    0.313"0.42"0.156"0.356"0.092"0.032"Not Rated23Closed10000000000000
    0.313"0.42"0.187"0.362"0.129"0.029"Not Rated14Closed1000000000000
    0.313"0.48"0.187"0.404"0.111"0.038"Not Rated32Closed1000000000000
    0.313"0.48"0.218"0.41"0.148"0.035"Not Rated22Closed1000000000000
    0.313"0.48"0.25"0.416"0.186"0.032"Not Rated15Closed1000000000000
    0.313"0.48"0.281"0.422"0.223"0.029"0.06"2.59.8Closed300000000000
     

    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.
    Ultra-Corrosion-Resistant Cobalt Nickel—The best choice when you need both corrosion resistance and strength. These springs resist stress corrosion and pitting from salt water and harsh chemicals. Plus, they’re 10% stronger than 316 stainless steel.
    Lg.
    OD
    ID
    Wire
    Dia.
    Compressed Lg.
    @ Max. Load
    Max. Load,
    lb.
    Spring Rate,
    lbf/in
    End
    Type
    Pkg.
    Qty.
    Pkg.
    Ultra-Corrosion-Resistant Cobalt Nickel
    0.313"0.057"0.045"0.006"0.132"0.140.81Closed500000000000000
    0.313"0.057"0.048"0.005"0.109"0.080.4Closed50000000000000
     

    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.
    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.
    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 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.
     
    Corrosion-Resistant 302 Stainless Steel
    0.313"0.063"0.007"0.73"0.020.270.58300000000000000
    0.313"0.063"0.008"0.6"0.030.371.1730000000000000
    0.313"0.063"0.009"0.52"0.050.522.2530000000000000
    0.313"0.063"0.011"0.44"0.080.916.5830000000000000
     
    Highly Corrosion-Resistant 316 Stainless Steel
    0.313"0.063"0.007"0.47"0.020.120.5820000000000000
    0.313"0.063"0.009"0.387"0.050.212.71000000000000
    0.313"0.078"0.009"0.439"0.040.191.461000000000000
    0.313"0.078"0.011"0.394"0.070.364.211000000000000
     
    Hook End
    Image of Product. Front orientation. Extension Springs. Hook End.
     
    Highly Corrosion-Resistant 316 Stainless Steel
    0.313"0.063"0.008"0.603"0.040.451.45000000000000
    0.313"0.063"0.011"0.445"0.11.147.95000000000000
    0.313"0.078"0.008"0.759"0.040.390.795000000000000
    0.313"0.078"0.011"0.536"0.091.034.215000000000000
     
    back to top