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The Miller 203071 is a Grade 5 steel hex head screw designed for Miller Electric welding systems. This 5/16-18 x 3.50-inch fastener is engineered for heavy-duty industrial, panel, and chassis applications, providing high tensile strength and resistance to vibration and thermal stress. It serves as an OEM replacement part to maintain equipment integrity and factory specifications.
Features
Grade 5 steel construction for high tensile strength
Full thread configuration for maximum grip range and consistent engagement
Hex head drive style for high-torque applications
Rust-resistant plating to prevent corrosion and seizing
Engineered to maintain clamping force under high vibration
Designed for thermal stress resistance
OEM fitment for Miller Electric equipment
Specifications
Brand: Miller Electric
Part Number: 203071
Thread Size: 5/16-18 UNC
Length: 3.5 inches
Head Type: Hex Head
Grade: Grade 5
Grade Identification: Three radial lines on head
Thread Style: Full Thread
Material: Steel
Drive Style: Hex
Wrench/Socket Size: 1/2-inch
Packaging: 1-per-ea
Coating: Rust-resistant plating
Alternate MPN: 411-3MP (per AI Mode Text)
Applications
Securing internal components in Miller welding power sources
