Wallace Forge has been manufacturing quality King Pins for tractor trailers since 1980. All our King Pins are 100% American made and individually checked to insure the highest quality. Forged out of an AISI 8630 or 4320 material, depending on the model, Wallace Forge’s Kin Pins conform to all SAE and AAR standards. Every one of our King Pins is 100% Brinell hardness checked, magnetic particle inspected and weldable.
Forged out of AISI 8630 material the “A” Style kingpin is otherwise known as a Mushroom Style King Pin.
Forged out of AISI 4320 material the Cruciform kingpin is available in a variety of welding configurations.
Double Spool or “B” Style King pins are primarily forged out of AISI 8630 material, unless customer specifications require AISI 4320.
Our solid one piece Kingpin Gooseneck Adapter is designed for short term adaption with Fifth Wheel, and Gooseneck configurations.
The forged kingpin and retention plate is designed for quick and easy service repair.
The “L” Style kingpin is forged out of AISI 4320 material.