61351087 - ESAB Replacement Screw 1/4-20 x 1/2 Inch Steel Zinc Plated

Technical Overview of the ESAB 61351087 Screw

The ESAB 61351087 is a specialized hardware component identified by the designation SCR 19021 STLZPC 0.250-20X0.50. This alphanumeric code delineates the precise physical specifications of the fastener, indicating it is a steel (STL) screw with a Zinc Plated Clear (ZPC) finish. The dimensional attributes include a nominal diameter of 0.250 inches (1/4 inch) featuring a Unified National Coarse (UNC) thread pitch of 20 threads per inch. The total length of the screw is 0.50 inches (1/2 inch), a standard size utilized frequently within the chassis and internal assemblies of ESAB welding power sources and wire feeders.

Material selection is paramount in industrial MRO (Maintenance, Repair, and Operations). The steel construction of this screw ensures high tensile and shear strength, necessary to withstand the mechanical vibrations inherent in heavy-duty welding operations. The application of a zinc plating serves a dual purpose: it provides a clean, professional aesthetic and, more importantly, acts as a sacrificial anode. This coating protects the underlying steel substrate from oxidation and corrosion caused by exposure to atmospheric moisture and industrial fumes, thereby preventing the fastener from seizing over time.

As an OEM (Original Equipment Manufacturer) part, the ESAB 61351087 guarantees strict adherence to tolerance standards. Unlike generic hardware store fasteners which may have variable thread quality or inferior plating thickness, this component is engineered to match the specific tapped holes and mating surfaces of ESAB equipment. This ensures a secure mechanical connection that maintains the structural rigidity and electrical grounding continuity of the machine.

Installation of this screw requires standard imperial tooling compatible with 1/4-20 fasteners. It is recommended for use in all designated repair procedures where the original bill of materials calls for part number 61351087. Proper torque application should be observed to prevent stripping, although the steel construction offers significant resistance to thread deformation compared to softer alloys.