223040 - Miller .250-28 x 0.87 Hex Head Screw, Grade 5 Zinc Plated (Pack of 10)

Genuine Miller Replacement Hardware

The Miller 223040 Screw is a specialized fastening component designed to meet the rigorous standards of industrial welding equipment. When maintaining or repairing high-performance machinery, every component matters, down to the smallest bolt. This specific screw features a .250-28 thread pitch, also known as 1/4-28 UNF (Unified National Fine). Unlike standard coarse threads, fine threads provide greater tensile stress area and are less likely to loosen under the high-frequency vibrations often generated by welding power sources and industrial generators. This makes the Miller 223040 an essential part for securing critical panels, internal assemblies, and structural components within your Miller equipment.

Constructed from Grade 5 steel, this hex head screw offers a significant upgrade over standard hardware-store Grade 2 fasteners. Grade 5 steel is a medium carbon steel that has been quenched and tempered to achieve higher yield and tensile strength. This ensures that the fastener can withstand significant torque during installation and maintain its hold under load without stretching or shearing. For professional technicians and maintenance personnel, using the correct grade of hardware is non-negotiable for safety and equipment longevity.

Corrosion is a constant enemy in industrial environments, where humidity, fumes, and temperature fluctuations are common. To combat this, the Miller 223040 screw is finished with a clear zinc plating. This plating acts as a sacrificial barrier, preventing the underlying steel from oxidizing and rusting. This ensures that the screw remains removable for future service and maintains the aesthetic and structural integrity of the machine. Sold in a convenient package of 10, this product ensures you have the necessary quantity to complete a repair or stock your maintenance bin for future needs.

Whether you are replacing a lost fastener during a routine service or performing a comprehensive overhaul of a Miller welder, using genuine OEM parts guarantees fitment and performance. Generic replacements may not match the precise dimensional tolerances or material specifications required by the manufacturer. By choosing the Miller 223040, you are ensuring that your equipment remains within factory specifications.

Key Features at a Glance:

• Precise Fitment: .250-28 fine thread pitch for vibration resistance.
• High Strength: Grade 5 steel construction for durability.
• Corrosion Protection: Zinc plated finish prevents rust.
• Convenient Quantity: Sold in packs of 10 for complete repairs.