255393 - Miller .500-13 x 2.500 Steel Carriage Bolt Replacement

Maintain Your Miller Equipment with OEM Parts

Keep your welding operations running smoothly with the Miller 255393 Carriage Bolt. This authentic replacement part is essential for welders and maintenance technicians who demand the best for their equipment. Welding machines are complex assemblies of electrical and mechanical components held together by precision hardware. Over time, bolts can become lost during service, stripped due to over-tightening, or corroded from exposure to harsh shop environments. The Miller 255393 provides a factory-perfect solution, ensuring that your machine remains as solid as the day it left the assembly line.

Specifications and Fitment

The Miller 255393 is a 1/2-13 x 2.500 steel carriage bolt. The "1/2-13" designation indicates a half-inch diameter with a coarse thread count of 13 threads per inch, a standard for substantial holding power in industrial machinery. The 2.500-inch length is critical for passing through specific frame sections or mounting points designed by Miller engineers. The "carriage" style head is specifically chosen for applications where security and a flush finish are desired. Because the head has no drive slot or hex, it cannot be easily removed from the outside, adding a layer of tamper resistance to external panels.

Why Choose OEM Hardware?

Substituting generic fasteners in high-performance welding equipment can lead to unforeseen issues. A bolt that is slightly too soft may shear under the weight of internal components, while one that is too hard might be brittle and snap under vibration. The Miller 255393 is manufactured to Miller's strict quality control standards, ensuring consistent material properties. Furthermore, the square neck dimension is precise; a generic bolt with a slightly oversized neck could damage the chassis mounting point, while an undersized one would spin freely, making tightening impossible. Sticking with OEM parts eliminates these variables.

Installation and Maintenance

When installing the Miller 255393, ensure that the square neck is properly aligned with the square cutout in the mounting surface before tightening the nut. This prevents damage to the bolt and the machine frame. It is always recommended to inspect all chassis hardware during routine machine blow-outs or service intervals. Loose hardware can lead to rattling, increased vibration noise, and eventually, mechanical failure. having a few of these specific carriage bolts on hand is a smart move for any shop maintaining a fleet of Miller power sources.