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The Miller 604612 is an OEM alloy steel set screw featuring a #8-32 thread, 0.120-inch length, and a cup point profile with a socket head drive and plain finish, specifically engineered for internal sub-assemblies in industrial arc welding equipment.
Features
OEM replacement component for industrial arc welding equipment
Cup point geometry creates a concentric circular cutting edge for semi-permanent grip
Internal hex drive maximizes tool surface engagement to prevent cam-out
Plain finish eliminates zinc vaporization risks in welding environments
High-tensile alloy steel construction with Chromium, Manganese, and Molybdenum
Quenched and tempered for optimal hardness-to-toughness parity
Torsional capacity designed for industrial tightening torques without fracturing
Specifications
Manufacturer: Miller Electric Mfg. LLC (ITW)
Part Number: 604612
Airgas Part Number: MIL604612
Fastener Type: Blind Set Screw / Grub Screw
Thread Size: #8
Thread Pitch: 32 TPI (UNC)
Thread Class: 3A Fit
Nominal Diameter: 0.1640 in (4.166 mm)
Length: 0.120 in (3.048 mm)
Drive Style: Internal Hex Socket (SCH)
Hex Drive Size: 5/64 in (0.0781 in)
Point Style: Cup Point (CUP PT)
Material: Alloy Steel (STL)
Surface Finish: Plain / Oil-Quenched (PLN)
Hardness Rating: Rockwell C (HRC) 45 - 53
Thermal Tolerance: Up to 300°C (572°F)
Thread OD Tolerance: Max 0.1640 in / Min 0.1573 in
Cup Point Diameter: 0.076 in - 0.084 in
Hex Socket Depth: 0.050 in minimum
Axial Alignment: 0.005 in TIR maximum
UPC: 715959030595
UNSPSC: 31161500
Packaging: 4-pack
Applications
Spoolmatic 30 Aluminum Arc Welding Guns
Spoolmatic 30A Aluminum Arc Welding Guns
MIG/GMAW torch head internal sub-assemblies
Securing gas diffusers and drive roll mounts
Internal electrical contact positioning
Wire feeder drive systems (gears, drive roll adapters, pulleys)
