McMaster-Carr logo
    Filter by
    System of Measurement
    Diameter
    Attribute Image
    End Type
    Fastener Head Type
    Industrial Info Compare
    Tolerance Rating
    Double Shear Breaking Strength
    DFARS Specialty Metals
    Industrial Info Compare
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Specifications Met
    Shoulder Length
    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)
    80 Products

    Dowel Pins

    Image of Product. Front orientation. Dowel Pins. Standard Tolerance, Plain Head.
    Precisely align machine parts and prevent movement during assembly. These dowel pins are machined to tight tolerances and have a uniform diameter for a snug fit. They can also be used as a pivot, shaft, or hinge to join moving components. Since dowel pins can be hard to remove, they are best suited for permanent fixtures that don't require frequent adjustments or disassembly.
    Steel
    High-Strength Alloy Steel—Our strongest, most wear-resistant pins, these won't bend or break from vibration. Use them for high-stress applications, such as mounting and aligning hydraulic cylinders and injection molds. They perform best in dry environments since moisture will cause them to rust.
    Lg.
    Dia. Tolerance
    Double Shear Breaking
    Strength
    Min.
    Hardness
    Pkg.
    Qty.
    Pkg.
    High-Strength Alloy Steel
     
    7/64" Diameter
    3/16"0.0001" to 0.0003"Not RatedRockwell C505000000000000000
    7/32"0.0001" to 0.0003"Not RatedRockwell C50500000000000000
    1/4"0.0001" to 0.0003"Not RatedRockwell C50500000000000000
    5/16"0.0001" to 0.0003"Not RatedRockwell C50500000000000000
    3/8"0.0001" to 0.0003"Not RatedRockwell C5010000000000000
    7/16"0.0001" to 0.0003"Not RatedRockwell C50500000000000000
    1/2"0.0001" to 0.0003"Not RatedRockwell C5010000000000000
    5/8"0.0001" to 0.0003"Not RatedRockwell C5010000000000000
    3/4"0.0001" to 0.0003"Not RatedRockwell C5010000000000000
    7/8"0.0001" to 0.0003"Not RatedRockwell C50500000000000000
    1"0.0001" to 0.0003"Not RatedRockwell C5010000000000000
    1 1/2"0.0001" to 0.0003"Not RatedRockwell C5010000000000000
     
    Corrosion-Resistant Stainless Steel
    18-8 Stainless Steel—The choice for wet and outdoor environments. In addition to resisting rust, these pins also withstand mild chemicals such as cleaners and degreasers. They are strong enough to join most components but won't withstand extreme stress and vibration as well as steel.
    Highly Corrosion-Resistant 316 Stainless Steel—Our most corrosion-resistant pins, these hold up in just about any environment. They won't degrade from exposure to weather, salt water, and most chemicals. Like 18-8 stainless steel, they're strong enough to join most components but won't withstand stress and vibration as well as steel.
    High-Strength Machinable 416 Stainless Steel—These pins hold their shape under stress and friction from moving parts. In addition to being the strongest stainless steel alloy, 416 is also the most machinable, so you can shape these pins to fit your hole. However, they are the least corrosion-resistant stainless steel option.
    Lg.
    Dia. Tolerance
    Double Shear Breaking
    Strength
    Min.
    Hardness
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
     
    7/64" Diameter
    1/8"0" to 0.0002"Not RatedNot Rated5000000000000000
    5/32"0" to 0.0002"Not RatedNot Rated500000000000000
    3/16"0" to 0.0002"Not RatedNot Rated500000000000000
    7/32"0" to 0.0002"Not RatedNot Rated500000000000000
    1/4"0" to 0.0002"Not RatedNot Rated500000000000000
    5/16"0" to 0.0002"Not RatedNot Rated500000000000000
    3/8"0" to 0.0002"Not RatedNot Rated500000000000000
    7/16"0" to 0.0002"Not RatedNot Rated500000000000000
    1/2"0" to 0.0002"Not RatedNot Rated500000000000000
    5/8"0" to 0.0002"Not RatedNot Rated500000000000000
    3/4"0" to 0.0002"Not RatedNot Rated500000000000000
    7/8"0" to 0.0002"Not RatedNot Rated500000000000000
    1"0" to 0.0002"Not RatedNot Rated500000000000000
     
    Highly Corrosion-Resistant 316 Stainless Steel
     
    7/64" Diameter
    1/8"0" to 0.0002"Not RatedNot Rated500000000000000
    5/32"0" to 0.0002"Not RatedNot Rated500000000000000
    3/16"0" to 0.0002"Not RatedNot Rated500000000000000
    7/32"0" to 0.0002"Not RatedNot Rated500000000000000
    1/4"0" to 0.0002"Not RatedNot Rated500000000000000
    5/16"0" to 0.0002"Not RatedNot Rated500000000000000
    3/8"0" to 0.0002"Not RatedNot Rated500000000000000
    7/16"0" to 0.0002"Not RatedNot Rated500000000000000
    1/2"0" to 0.0002"Not RatedNot Rated500000000000000
    5/8"0" to 0.0002"Not RatedNot Rated500000000000000
    3/4"0" to 0.0002"Not RatedNot Rated500000000000000
    7/8"0" to 0.0002"Not RatedNot Rated500000000000000
    1"0" to 0.0002"Not RatedNot Rated500000000000000
    1 1/2"0" to 0.0002"Not RatedNot Rated10000000000000
     
    High-Strength Machinable 416 Stainless Steel
     
    7/64" Diameter
    5/32"0.0001" to 0.0003"Not RatedRockwell C36500000000000000
    1/4"0.0001" to 0.0003"Not RatedRockwell C36500000000000000
    5/16"0.0001" to 0.0003"Not RatedRockwell C36500000000000000
    3/8"0.0001" to 0.0003"Not RatedRockwell C36500000000000000
    7/16"0.0001" to 0.0003"Not RatedRockwell C36500000000000000
    1/2"0.0001" to 0.0003"Not RatedRockwell C36500000000000000
    5/8"0.0001" to 0.0003"Not RatedRockwell C36500000000000000
    3/4"0.0001" to 0.0003"Not RatedRockwell C36500000000000000
    7/8"0.0001" to 0.0003"Not RatedRockwell C36500000000000000
    1"0.0001" to 0.0003"Not RatedRockwell C36500000000000000
    1 1/2"0.0001" to 0.0003"Not RatedRockwell C36500000000000000
     
    Corrosion-Resistant Stainless Steel with Material Certificate
    Pins include a report with a traceable lot number and a description of their chemical, physical, and mechanical properties.
    18-8 Stainless Steel—The choice for wet and outdoor environments. In addition to resisting rust, these pins also withstand mild chemicals such as cleaners and degreasers. They are strong enough to join most components but won't withstand extreme stress and vibration as well as steel.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Lg.
    Dia.
    Tolerance
    Double Shear Breaking
    Strength
    Min.
    Hardness
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
     
    7/64" Diameter
    1 1/2"0" to 0.0002"Not RatedNot Rated100000000000000
     

    Barbed Dowel Pins with Rounded Head

    Image of Product. Front orientation. Dowel Pins. Rounded Head, Barbed Shaft, Standard Tolerance.
    Often used in place of rivets, these pins create a finished look while securing plastics and soft metals such as aluminum. The sharp points bite into parts for a permanent hold. Also known as Barb-Lok™ pins.
    Steel
    Zinc-Plated Carbon Steel—These pins withstand occasional exposure to moisture. However, since friction from moving parts can wear away the finish, they're not ideal for wet environments. While not nearly as corrosion resistant as stainless steel, they are stronger and won’t deform under stress.
    Head
    Lg.
    Double Shear Breaking
    Strength
    Min.
    Hardness
    Dia.
    Ht.
    Each
    Zinc-Plated Carbon Steel
     
    7/64" Diameter
    5/16"Not RatedNot Rated0.211"0.087"00000000000000
    3/8"Not RatedNot Rated0.211"0.087"0000000000000
    1/2"Not RatedNot Rated0.211"0.087"0000000000000
     

    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.
    Wear-Resistant 400 Series Stainless Steel—Our most wear-resistant stainless steel pins, these are good for pivoting parts that create a lot of friction. They hold up in environments that experience occasional moisture, but they're not as corrosion resistant as 18-8 and 316 stainless steel.
    Lg.
    For Hole Dia.
    Double Shear Breaking
    Strength, lbf
    Min.
    Hardness
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    Spring Steel
     
    7/64" Diameter
    1/4"0.108" to 0.112"1,000Rockwell C42ASME B18.8.250000000000000000
    1/2"0.108" to 0.112"1,000Rockwell C42ASME B18.8.25000000000000000
    3/4"0.108" to 0.112"1,000Rockwell C42ASME B18.8.25000000000000000
    1"0.108" to 0.112"1,000Rockwell C42ASME B18.8.25000000000000000
    1 1/2"0.108" to 0.112"1,000Rockwell C42ASME B18.8.22500000000000000
     
    Corrosion-Resistant 18-8 Stainless Steel
     
    7/64" Diameter
    1/4"0.108" to 0.112"800Not RatedASME B18.8.22500000000000000
    1/2"0.108" to 0.112"800Not RatedASME B18.8.2250000000000000
    3/4"0.109" to 0.112"800Not RatedASME B18.8.22500000000000000
    1"0.109" to 0.112"800Not RatedASME B18.8.22500000000000000
     
    Wear-Resistant 400 Series Stainless Steel
     
    7/64" Diameter
    1/2"0.108" to 0.112"1,000Rockwell C46ASME B18.8.22500000000000000
    3/4"0.108" to 0.112"1,000Rockwell C46ASME B18.8.2100000000000000
    1"0.108" to 0.112"1,000Rockwell C46ASME B18.8.2100000000000000
     

    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
    Image of Product. Front orientation. Core Pins. Core Pins.
    M2 high-speed tool steel pins resist wear and stay sharp at high temperatures.
    Head
    Each
    Dia.
    Dia.
    Tolerance
    Dia.
    Ht.
    Min.
    Hardness
    1-9
    10-99
    100-Up
    2 1/2" Long
    7/64"0" to 0.0002"11/64"3/32"Rockwell C60000000000000000000000000
     
    4" Long
    7/64"0" to 0.0003"11/64"3/32"Rockwell C60000000000000000000000000
     
    6" Long
    7/64"0" to 0.0003"11/64"3/32"Rockwell C60000000000000000000000000
     

    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.
    Nitride-Coated H13 Tool Steel
    H13 tool steel pins resist rapid changes in temperature.
    Head
    Dia.
    Dia. Tolerance
    Dia.
    Ht.
    Min.
    Hardness
    Each
     
    6" Long
    7/64"-0.0008" to -0.0005"1/4"1/8"Rockwell C4100000000000000
     
    10" Long
    7/64"-0.0008" to -0.0005"1/4"1/8"Rockwell C410000000000000
     

    Shoulder-Style Ejector Pins

    Image of Product. Front orientation. Ejector Pins. Shoulder-Style Ejector Pins.
    A thick shoulder underneath the head makes these pins more rigid than standard ejector pins. Also known as knockout and forged pins, use them to push parts out of molds. They're precision-ground to tight tolerances and hardened for strength and wear resistance. Machining is not recommended.
    Pins are made of H13 tool steel to resist rapid changes in temperature.
    Nitride-Coated H13 Tool Steel
    Head
    Dia.
    Dia. Tolerance
    Shoulder
    Dia.
    Dia.
    Ht.
    Min.
    Hardness
    Each
    1/2" Long Shoulder
     
    6" Long
    7/64"-0.0008" to -0.0005"1/8"1/4"1/8"Rockwell C4100000000000000
     
    10" Long
    7/64"-0.0008" to -0.0005"1/8"1/4"1/8"Rockwell C410000000000000
     
    2" Long Shoulder
     
    6" Long
    7/64"-0.0008" to -0.0005"1/8"1/4"1/8"Rockwell C410000000000000
     
    10" Long
    7/64"-0.0008" to -0.0005"1/8"1/4"1/8"Rockwell C410000000000000
     
    3" Long Shoulder
     
    10" Long
    7/64"-0.0008" to -0.0005"1/8"1/4"1/8"Rockwell C410000000000000
     
    4" Long Shoulder
     
    10" Long
    7/64"-0.0008" to -0.0005"1/8"1/4"1/8"Rockwell C410000000000000
     

    Flush Mount-Head Core Pins

    Image of Product. Front orientation. Core Pins. Flush Mount-Head Core Pins.
    A 60° beveled head fits into a countersunk hole. Mold plastic around these pins to form small holes, or use them to perforate parts. Also known as perforator, mold, forged, quill, and pilot pins, they can be machined to fit your application. Pins are 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
    Dia.
    Dia.
    Tolerance
    Dia.
    Ht.
    Min.
    Hardness
    Countersink
    Angle
    Each
    2 1/2" Long
    7/64"0" to 0.0003"0.197"0.077"Rockwell C6060°
    		00000000000000
     
    6" Long
    7/64"0" to 0.0003"0.197"0.077"Rockwell C6060°
    		00000000000000
     

    Through-Hardened Ejector Pins

    Image of Product. Front orientation. Ejector Pins. Through-Hardened Ejector Pins.
    Compared to standard ejector pins, these pins are less likely to chip and crack when used to push steel parts out of molds because they've been hardened through their core. However, they cannot be drilled or tapped and are more brittle than standard ejector pins. They're also known as knockout and forged pins. Made of H13 tool steel, they resist rapid changes in temperature. They’re precision ground to tight tolerances.
    Nitride-Coated H13 Tool Steel
    Head
    Dia.
    Dia. Tolerance
    Dia.
    Ht.
    Min.
    Hardness
    Each
     
    6" Long
    7/64"-0.0008" to -0.0005"1/4"1/8"Rockwell C500000000000000
     
    back to top