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279718 - Miller 1/2-20 x 0.87 Hex Head Screw Grade 5

Packaging: 1 PER EA
$5.67/EA $3.99/1 PER EA only $3.99/EASave 30%

Usually ships within 3-5 business days

OVERVIEW

Keep Your Miller Machine Secure with OEM Parts

When you are repairing your Miller welder, every bolt matters. The Miller 279718 Screw is a genuine OEM replacement part designed to get your machine back together exactly the way the factory intended. While it might be tempting to grab a random bolt from the bin, welding machines require specific hardware to handle the vibration, heat, and stress of daily operation. This particular screw is a Grade 5 fastener, meaning it is hardened to withstand significantly more force than standard hardware store bolts. It features a 1/2-20 fine thread, which holds tighter and resists vibrating loose better than coarse threads—a crucial feature for equipment that gets moved around jobsites or runs with heavy transformers.

This screw is 0.87 inches long and features a standard hex head, making it easy to install with your existing toolset. The "Plated Clear" finish isn't just for looks; it provides a layer of protection against rust and corrosion. Inside a welder, moisture and atmospheric contaminants can attack bare metal, leading to seized bolts that make future repairs a nightmare. By using this genuine Miller screw, you ensure that the threads will remain clean and the bolt will hold fast until the next time you need to remove it.

Don't compromise the integrity of your expensive equipment with mismatched hardware. Whether you are securing a panel, mounting a component, or fixing a chassis part, the Miller 279718 provides the correct length, thread pitch, and strength rating. Check your machine's parts manual to verify the location and quantity needed. This part is sold individually, so you can grab exactly what you need to finish the job right.

Why Choose Genuine Miller Hardware?

  • Perfect Fit: No guessing if the threads will match or if the bolt is too long.
  • Correct Grade: Grade 5 steel ensures the bolt won't shear or stretch under load.
  • Corrosion Protection: Plating prevents rust that can damage your machine's chassis.
  • Peace of Mind: Maintain your equipment's warranty and resale value by using authentic parts.
Additional Information
Brand:Miller
Packaging Description:1-per-ea
Thread Size:1/2-20 UNF
Length:0.87 in
Head Type:Hex Head
Grade:Grade 5
Finish:Plated Clear (Zinc)
Material:Steel

INCLUDED

  • (1) Screw, 1/2-20 x 0.87 Hex Head Grade 5

APPLICATIONS

  • Securing chassis components in Miller welding machines
  • Mounting internal transformers or heavy assemblies
  • General repair of Miller industrial equipment
  • Replacement of stripped, sheared, or lost 1/2-20 hardware

FAQ

The Miller 279718 screw has a 1/2-20 UNF (Unified National Fine) thread size.

This is a Grade 5 steel screw, offering higher tensile strength than standard Grade 2 hardware.

No, the Miller 279718 is sold as a single screw. Washers and nuts must be purchased separately if needed.

You should check the parts breakdown manual for your specific Miller machine serial number to verify the part number 279718 is required.

Yes, it features a clear plating (typically zinc) that provides corrosion resistance suitable for standard industrial environments.

Since it is a 1/2-inch diameter hex head screw, you will typically need a 3/4-inch wrench or socket for installation.

No, a standard coarse thread (1/2-13) will not fit into the 1/2-20 fine thread hole and will damage the mating threads.

The screw has a length of 0.87 inches (approximately 7/8 of an inch).