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    21 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.
    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.,
    mm
    OD,
    mm
    ID,
    mm
    Wire Dia.,
    mm
    Compressed Lg. @
    Max. Load, mm
    Max. Load,
    lb.
    Spring Rate,
    lbf/mm
    End
    Type
    Pkg.
    Qty.
    Pkg.
    Corrosion-Resistant 302 Stainless Steel
    52.391.580.413.71.41.1Closed500000000000000
    52.491.880.32.90.680.33Closed50000000000000
     
    Highly Corrosion-Resistant 316 Stainless Steel
    51.40.90.2540.50.55Closed1000000000000
    51.410.23.50.20.19Closed100000000000
    521.40.33.70.60.52Closed1000000000000
    521.50.253.30.30.23Closed1000000000000
    521.60.22.90.20.09Closed1000000000000
    52.51.90.33.30.50.33Closed1000000000000
    52.520.2530.30.15Closed1000000000000
     
    Ultra-Corrosion-Resistant Cobalt Nickel
    51.321.040.142.40.160.06Closed50000000000000
    51.321.10.1120.080.03Closed50000000000000
    51.651.370.1420.120.04Closed50000000000000
    51.651.430.111.70.070.02Closed50000000000000
     

    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
    51.5 to 1.60.3350Rockwell C42DIN 1481, ISO 875210000000000000000
     
    2 mm Diameter
    520.2330Rockwell C42DIN 7346, ISO 133375000000000000000
    52 to 2.10.4600Rockwell C42ISO 875220000000000000000
     
    2.5 mm Diameter
    52.50.25530Rockwell C42DIN 7346, ISO 13337500000000000000
     
    3 mm Diameter
    530.3780Rockwell C42DIN 7346, ISO 13337500000000000000
     
    5 mm Diameter
    550.52,300Rockwell C42DIN 7346, ISO 133375000000000000000
     
    Corrosion-Resistant 18-8 Stainless Steel
     
    1.5 mm Diameter
    51.5 to 1.60.3Not RatedNot RatedISO 87521000000000000000
     
    2 mm Diameter
    52 to 2.10.4Not RatedNot RatedISO 87521000000000000000
     
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