The stainless steel 303 undersized dowel pin has a slightly smaller diameter to fit imprecise or inconsistent hole sizes.
Tolerance is + 0.0000" to - 0.0002”. Both ends are chamfered for easy insertion. Stainless steel 303 provides corrosion resistance. Stainless steels are used for their corrosion resistance, high-temperature strength, scaling resistance, and low-temperature toughness. These properties account for their wide use in practically every industry.
The dowel pin, also known as a parallel pin, is commonly used to retain parts in a fixed position or to preserve alignment. They are often used as precise locating devices in machinery and may have a smaller or larger diameter than their designation hole, which allows them to fit freely or tightly.
