McMaster-Carr logo
    Filter by
    System of Measurement
    Diameter
    Attribute Image
    End Shape
    Fastener Head Type
    Industrial Info Compare
    Head Diameter
    End Type
    Wall Thickness
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    Industrial Info Compare
    Head Height
    Double Shear Breaking Strength
    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)
    19 Products

    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
     
    3.5 mm Diameter
    103.5 to 3.650.82,000Rockwell C42ISO 875210091611A18500000
    203.5 to 3.650.82,000Rockwell C42ISO 875210091611A18700000
    303.5 to 3.650.82,000Rockwell C42ISO 875210091611A18900000
     
    Corrosion-Resistant 18-8 Stainless Steel
     
    3.5 mm Diameter
    103.5 to 3.650.75Not RatedNot RatedDIN 1481, ISO 87525091610A45000000
    203.5 to 3.60.7Not RatedNot RatedISO 87525091610A4520000
    303.5 to 3.60.7Not RatedNot RatedISO 87525091610A4540000
     

    Core Pins

    Image of Product. Front orientation. Core Pins. Core Pins.
    Mold plastic around these pins to form small holes, or use them to perforate parts. They have a flat head to fit into a counterbored hole. Pins can be machined to fit your application. They're precision-ground to tight tolerances.
    M2 High-Speed Tool SteelAbout M2 High-Speed Tool Steel
    M2 high-speed tool steel pins resist wear and stay sharp at high temperatures.
    Head,
    mm
    Each
    Dia.,
    mm
    Dia. Tolerance,
    mm
    Dia.
    Ht.
    Min.
    Hardness
    1-9
    10-99
    100-Up
    63 mm Long
    3.5000 to 0.00865Rockwell C6098378A172000000000000000000
     

    Ejector Pins

    Image of Product. Front orientation. Ejector Pins. Ejector Pins.
    Also known as knockout and forged pins, use these pins to push parts out of molds. Pins are precision-ground to tight tolerances and hardened for strength and wear resistance. Machining is not recommended. Metric pins meet DIN 1530 specifications.
    M2 High-Speed Tool Steel
    M2 high-speed tool steel pins withstand high temperatures.
    Head,
    mm
    Dia.,
    mm
    Dia. Tolerance,
    mm
    Dia.
    Ht.
    Min.
    Hardness
    Each
     
    100 mm Long
    3.5000-0.012 to -0.00473Rockwell C6090224A13300000
     
    125 mm Long
    3.5000-0.012 to -0.00473Rockwell C6090224A1340000
     
    160 mm Long
    3.5000-0.012 to -0.00473Rockwell C6090224A13500000
     
    200 mm Long
    3.5000-0.012 to -0.00473Rockwell C6090224A13600000
     
    250 mm Long
    3.5000-0.012 to -0.00473Rockwell C6090224A13700000
     
    Nitride-Coated H13 Tool Steel
    H13 tool steel pins resist rapid changes in temperature.
    Head,
    mm
    Dia.,
    mm
    Dia. Tolerance,
    mm
    Dia.
    Ht.
    Min.
    Hardness
    Each
     
    160 mm Long
    3.5000-0.008 to -0.00273Rockwell C4193217A23000000
     
    250 mm Long
    3.5000-0.008 to -0.00273Rockwell C4193217A2400000
     
    315 mm Long
    3.5000-0.008 to -0.00273Rockwell C4193217A2500000
     
    500 mm Long
    3.5000-0.008 to -0.00273Rockwell C4193217A27000000
     

    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.
    Lg.,
    mm
    For Hole
    Dia., mm
    Double Shear Breaking
    Strength, lbf
    Min.
    Hardness
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Spring Steel
     
    3.5 mm Diameter
    103.500 to 3.6001,600Rockwell C43ASME B18.8.3M, DIN 7343, ISO 87502591612A308000000
    203.500 to 3.6001,600Rockwell C43ASME B18.8.3M, DIN 7343, ISO 87502591612A30900000
    303.500 to 3.6001,600Rockwell C43ASME B18.8.3M, DIN 7343, ISO 87502591612A31000000
     
    back to top