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Miller 035080 Screw, 5/16-18 x 1.00 Socket Head Cap - Grade 8

$8.12/EA $5.72/1 PER EA only $5.72/EASave 30%

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OVERVIEW

Miller 035080 Socket Head Cap Screw - Grade 8

Keep your Miller welding equipment in top operating condition with the Miller 035080 Screw. This is a specific replacement fastener identified by the manufacturer for use in securing critical components within their welding power sources and wire feeders. Often, during routine maintenance or field repairs, hardware can be dropped, lost, or stripped. Replacing these items with the correct OEM part is essential to ensure your machine goes back together exactly as the engineers intended. This screw is a 5/16-18 (listed as .312-18) thread with a 1-inch length, a common size for chassis assembly and component mounting in heavy-duty industrial welders.

The strength of your hardware matters. This Miller 035080 screw is manufactured to Grade 8 specifications. In the world of fasteners, Grade 8 represents a high level of strength and durability, typically constructed from medium carbon alloy steel that has been quenched and tempered. This makes it significantly stronger than the standard bolts found in most hardware bins. Welding machines are heavy and often subjected to rough handling, transport vibration, and thermal cycles. A Grade 8 fastener provides the necessary clamping force to keep internal transformers, rectifiers, or fan assemblies securely in place, preventing rattling or component movement that could lead to electrical shorts or mechanical failure.

The socket head design is a favorite among technicians for its accessibility and clean appearance. Because the drive is internal (hex), you can use a T-handle or L-key to tighten this screw in recessed pockets or right up against other components where a socket or open-end wrench wouldn't fit. This makes the Miller 035080 ideal for tight internal layouts found in compact inverters or complex wire drive systems. The plain finish is standard for high-strength alloy steel parts used internally, ensuring precise thread engagement without the buildup of thick plating layers.

Don't compromise your equipment's reliability with mismatched bolts. Using the correct Miller 035080 screw guarantees that the thread pitch, length, and material hardness are perfectly suited for the mating part on your welder. Whether you are a professional repair technician or a welder performing your own maintenance, having the right hardware on hand saves time and frustration. Verify your machine's parts manual to confirm this part number is required for your specific model and serial number range.

Additional Information
Brand:Miller
Packaging Description:1 Per Ea
Thread Size:5/16-18 (0.312-18)
Length:1 in
Head Type:Socket Head Cap
Material Grade:Grade 8
Drive Type:Hex Socket
Finish:Plain

INCLUDED

  • (1) Screw, .312-18 x 1.00 Socket Head Hex Grade 8

APPLICATIONS

  • Securing internal components in Miller welding power sources.
  • Fastening chassis panels and protective covers.
  • Mounting heavy-duty transformers or fan assemblies.
  • Replacement of stripped or lost socket head cap screws during maintenance.
  • General high-strength fastening applications requiring 5/16-18 threads.

FAQ

The Miller 035080 screw has a thread size of .312-18, which corresponds to a standard 5/16-18 UNC (Coarse) thread.

Since this is a socket head cap screw, you will need a hex key (Allen wrench) or a hex bit socket. For a 5/16" socket cap screw, the standard hex key size is typically 1/4".

Yes, the Miller 035080 is rated as Grade 8, which indicates it is made from high-strength alloy steel, suitable for high-stress applications.

It is not recommended. If the original specification calls for Grade 8, using a weaker Grade 5 bolt could lead to failure under load or vibration. Always use the OEM specified grade.

'PLN' stands for Plain finish. This means the screw does not have a coating like zinc or galvanization, which is common for high-strength internal engine or machine parts.

You should check the parts breakdown manual for your specific Miller machine model and serial number. Look for part number 035080 in the hardware list.

The total length of the screw is listed as 1.00 inch. For socket head cap screws, length is measured from under the head to the end of the threads.

This item is typically sold individually (1 per each), but you should verify the quantity needed for your repair.
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