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    56 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.
    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.
    Corrosion-Resistant 302 Stainless Steel
    102.391.580.4171.50.5Closed—500000000000000
    102.491.880.35.40.690.15Closed—50000000000000
    102.822.180.324.40.880.16ClosedDIN 209550000000000000
    104.53.50.55.11.70.34ClosedDIN 209550000000000000
    107.35.317.36.32.2Closed and GroundDIN 209550000000000000
     
    Highly Corrosion-Resistant 316 Stainless Steel
    101.410.26.90.20.09Closed—1000000000000
    1021.40.37.10.60.23Closed—1000000000000
    1021.50.256.40.30.1Closed—1000000000000
    1021.60.25.50.20.04Closed—1000000000000
    102.41.60.47.31.30.49Closed—1000000000000
    102.51.90.36.30.50.14Closed—1000000000000
    102.520.255.60.30.07Closed—1000000000000
    102.822.180.325.90.60.15Closed—1000000000000
    1032.40.35.60.40.1Closed—1000000000000
    1032.50.2550.20.05Closed—1000000000000
    104.53.50.55.91.40.33Closed and Ground—1000000000000
    107.35.317.262.2Closed and Ground—100000000000
     

    Extension Springs

    Image of Product. Front orientation. Extension Springs. Hook End.

    Hook End

    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.
    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.
    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.,
    mm
    OD,
    mm
    Wire Dia.,
    mm
    Extended Lg.
    @ Max. Load, mm
    Min.
    Max.
    Spring Rate,
    lbf/mm
    Pkg.
    Qty.
    Pkg.
    Hook End
     
    Highly Corrosion-Resistant 316 Stainless Steel
    1020.2519.50.060.760.0750000000000000
    1030.320.50.080.840.075000000000000
    1040.323.40.060.610.045000000000000
     

    Slotted Spring Pins

    Image of Product. Front orientation. Spring Pins. Slotted Spring Pins.
    Image of Product. End View. Side1 orientation. Spring Pins. Slotted Spring Pins.

    End View

    Squeeze these pins into holes and they expand slightly, creating tension to hold parts in place. They are often used as hinge pins and as fasteners for springs and power transmission components. An alternative to dowel pins, they're lighter in weight with a hollow center and don’t need a precise hole. Also known as roll pins.
    Spring Steel—These pins won't deform from stress and vibration. Although they're stronger than stainless steel, they're best for dry environments since moisture will cause them to rust.
    Corrosion-Resistant 18-8 Stainless Steel—The choice for wet and outdoor environments, these pins resist rusting. They are strong enough to join most components but won't withstand extreme stress and vibration as well as steel.
    Lg.,
    mm
    For Hole
    Dia., mm
    Wall Thk.,
    mm
    Double Shear Breaking
    Strength, lbf
    Min.
    Hardness
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Spring Steel
     
    1.5 mm Diameter
    101.5 to 1.60.3350Rockwell C42ISO 8752100000000000000000
     
    2 mm Diameter
    1020.2330Rockwell C42DIN 7346, ISO 1333710000000000000000
    102 to 2.10.4600Rockwell C42ISO 875220000000000000000
     
    2.5 mm Diameter
    102.50.25530Rockwell C42DIN 7346, ISO 133371000000000000000
    102.5 to 2.60.5950Rockwell C42DIN 1481, ISO 87521000000000000000
     
    3 mm Diameter
    1030.3780Rockwell C42DIN 7346, ISO 1333710000000000000000
    103 to 3.10.61,400Rockwell C42ISO 875220000000000000000
     
    3.5 mm Diameter
    103.5 to 3.650.82,000Rockwell C42ISO 87521000000000000000
     
    4 mm Diameter
    1040.51,700Rockwell C42DIN 7346, ISO 13337500000000000000
    104 to 4.20.82,500Rockwell C42ISO 875210000000000000000
     
    5 mm Diameter
    105 to 5.213,900Rockwell C42DIN 1481, ISO 875210000000000000000
     
    6 mm Diameter
    1060.754,000Rockwell C42DIN 7346, ISO 13337250000000000000
     
    8 mm Diameter
    1080.755,300Rockwell C42DIN 7346, ISO 133372500000000000000
     
    10 mm Diameter
    101015,300Rockwell C42DIN 7346, ISO 133371000000000000000
     
    12 mm Diameter
    1012110,700Rockwell C42DIN 7346, ISO 13337100000000000000
     
    13 mm Diameter
    10131.214,800Rockwell C42DIN 7346, ISO 13337500000000000000
     
    16 mm Diameter
    10161.522,000Rockwell C42DIN 7346, ISO 133371000000000000000
     
    Corrosion-Resistant 18-8 Stainless Steel
     
    1.5 mm Diameter
    101.5 to 1.60.3Not RatedNot RatedISO 8752250000000000000
     
    2 mm Diameter
    102 to 2.10.4Not RatedNot RatedDIN 1481, ISO 8752250000000000000
     
    2.5 mm Diameter
    102.5 to 2.60.5Not RatedNot RatedISO 8752250000000000000
     
    3 mm Diameter
    103 to 3.10.6Not RatedNot RatedDIN 1481, ISO 8752250000000000000
     
    3.5 mm Diameter
    103.5 to 3.650.75Not RatedNot RatedDIN 1481, ISO 87525000000000000000
     
    4 mm Diameter
    104 to 4.20.8Not RatedNot RatedDIN 1481, ISO 8752100000000000000
     
    5 mm Diameter
    105 to 5.21Not RatedNot RatedDIN 1481, ISO 8752100000000000000
     

    Coiled Spring Pins

    Image of Product. Front orientation. Spring Pins. Coiled Spring Pins.
    Image of Product. End View. Side1 orientation. Spring Pins. Coiled Spring Pins.

    End View

    The best spring pins for joining parts exposed to vibration and shock. They're often used in power transmission, automation, and other assemblies with constant motion and sudden starts and stops. Because of their spiral shape, they flex to conform to holes that aren’t perfectly round.
    Spring Steel—These pins won't deform from stress and vibration. Although they're stronger than stainless steel, they're best for dry environments since moisture will cause them to rust.
    Corrosion-Resistant 18-8 Stainless Steel—The choice for wet and outdoor environments, these pins resist rusting. They are strong enough to join most components but won't withstand extreme stress and vibration as well as steel.
    Lg.,
    mm
    For Hole
    Dia., mm
    Double Shear Breaking
    Strength, lbf
    Min.
    Hardness
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Spring Steel
     
    1.5 mm Diameter
    101.600 to 1.700175Rockwell C43ASME B18.8.3M, DIN 7343, ISO 87505000000000000000
     
    2 mm Diameter
    102.000 to 2.100550Rockwell C43ISO 87505000000000000000
     
    2.5 mm Diameter
    102.500 to 2.600850Rockwell C43ASME B18.8.3M, DIN 7343, ISO 8750500000000000000
     
    3 mm Diameter
    103.000 to 3.1001,200Rockwell C43DIN 7343, ISO 87505000000000000000
     
    3.5 mm Diameter
    103.500 to 3.6001,600Rockwell C43ASME B18.8.3M, DIN 7343, ISO 87502500000000000000
     
    4 mm Diameter
    104.000 to 4.1002,100Rockwell C41DIN 7343, ISO 8750250000000000000
     
    5 mm Diameter
    105.000 to 5.1003,300Rockwell C43ASME B18.8.3M, DIN 7343, ISO 87502500000000000000
     
    Corrosion-Resistant 18-8 Stainless Steel
     
    1 mm Diameter
    101.000 to 1.040100Not RatedDIN 7343, ISO 87505000000000000000
     
    1.5 mm Diameter
    101.500 to 1.600200Not RatedASME B18.8.3M, DIN 7343, ISO 8750250000000000000
     
    2 mm Diameter
    102.000 to 2.100400Not RatedDIN 7343, ISO 87502500000000000000
     
    2.5 mm Diameter
    102.500 to 2.600650Not RatedASME B18.8.3M, DIN 7343, ISO 8750250000000000000
     
    3 mm Diameter
    103.000 to 3.100900Not RatedDIN 7343, ISO 87502500000000000000
     
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