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    9 Products

    Trailer Kingpins

    Image of Product. Front orientation. Kingpins. Weld On.
    Image of Product. Front orientation. Kingpins. Bolt On.
    Image of Specification. Front orientation. Contains Annotated.

    Weld On

    Bolt On

    Use these kingpins as the primary connection and pivot point between your semi-trailer and semi-tractor. They help the trailer turn and move with the tractor to remain stable and balanced during towing. Made of 8630 alloy steel, these kingpins are strong and hard. Plus, the addition of chromium in the steel protects them from corrosion in wet conditions. Install them on the underside of your trailer.
    Overall
    Mounting Hole
    Ht.
    Dia.
    Plate
    Thk.
    Kingpin
    Dia.
    Material
    No.
    of
    Dia.
    Ctr.-to-Ctr.
    Each
    Weld On
    4 1/2"8"1/4"2"8630 Alloy Steel———9218N13000000
    4 9/16"8"5/16"2"8630 Alloy Steel———9218N1400000
    4 5/8"8"3/8"2"8630 Alloy Steel———9218N1500000
    4 3/4"8"1/2"2"8630 Alloy Steel———9218N1600000
     
    Bolt On
    4 5/8"8"3/8"2"8630 Alloy Steel81/2"6 3/4"9218N11000000
    4 3/4"8"1/2"2"8630 Alloy Steel81/2"6 3/4"9218N12000000
     

    Kingpin Locks

    Image of Product. Front orientation. Kingpin Locks. Collar Lock.

    Collar Lock

    Image of Product. Front orientation. Kingpin Locks. Cap Lock.

    Cap Lock

    Block access to connect to your trailer, so someone can't drive away with it. These locks are useful when storing a trailer or making sure it can’t be moved while it’s being loaded and unloaded. They come with two keys that only the manufacturer can duplicate.
    Collar Lock—Collar locks wrap around the kingpin before locking in place. They’re easy to install and bright yellow for high visibility.
    Cap Lock—Cap locks are made from a solid block of iron and cover the entire pin, so they are hard to twist or pry off. Their locking bolt slides into place like a drawer, butting up against the kingpin to secure it. To make them tough to pick, the lock itself is recessed and uses rotating discs—like tumblers in a safe—instead of traditional springs and pins.
    Keyed Differently—Choose keyed differently locks if you need locks that each open with a different key.
    Keyed Alike—Choose keyed alike locks if you need several locks that open with the same key.
    Overall
    Keyed
    Differently
    Keyed Alike
    For Max. Kingpin
    Size
    Lg.
    Wd.
    Ht.
    Material
    Color
    No. of Keys
    Included
    Each
    Each
    Collar Lock
    2"3 5/8"5 7/8"1 3/8"Powder-Coated AluminumYellow21757A111000000———0
     
    Cap Lock
    2 1/2"6"4 1/2"3"Iron—21757A390000001757A430000000
     
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