Multiquip 0038403000 Hex Nut M4

The Multiquip 0038403000 Hex Nut M4 is a genuine OEM fastener designed for Multiquip GA-series gasoline powered generators and GAW-series arc welders, including models GA-9.7HEA, GA2.5HR, GA3.6HR, GA6HR/GA6HRS/GA6HRSNC2, GAC6HR, GAC6HRS.7HEA, GA2.5HR, GA3.6HR, GA6HR, GA6HRS, GA6HRSNC2, GAC6HR, GAC6HRS, GAW135H, GAW180HE, GAW180HE1, and GAW180HEA. As a direct OEM replacement, this hex nut is manufactured to the same specification as the original hardware installed at the factory, ensuring a correct, secure fit every time. Sourced direct from Multiquip, part number 0038403000 is the exact fastener called out in the manufacturer's parts documentation for these machines. When you need a dependable hardware replacement to get your generator or welder back in service, this is the correct part to order.

Key Features

• Genuine OEM Hardware Grade — Manufactured to the same thread specification and material grade as the original M4 hex nut, ensuring correct torque retention across generator and welder assemblies.
• Direct-Fit Replacement — Threads directly onto M4 fastening points with no reworking or sizing adjustments needed, maintaining the integrity of the original assembly.
• Broad GA and GAW Series Fitment — Confirmed for GA-9.7HEA, GA2.5HR, GA3.6HR, GA6HR, GA6HRS, GAC6HR, GAC6HRS, GAW135H, GAW180HE, GAW180HE1, and GAW180HEA models.
• Structural Fastening Integrity — A correctly torqued hex nut keeps covers, panels, and internal components securely seated during operation; a missing or stripped nut can allow vibration-induced loosening and component damage over time.
• Electrical Safety Relevance — On generator and welder equipment, loose or incorrect fasteners on housings and terminal areas can compromise grounding and containment — using the specified OEM nut maintains the designed safety envelope of the machine.

A hex nut is a standard six-sided threaded fastener that pairs with a bolt or stud to clamp components securely together. On gasoline-powered generators and arc welders, hex nuts are used throughout the machine to secure panels, guards, brackets, electrical terminals, and engine-mounted components. When a hex nut is lost, stripped, or corrodes beyond use, the joint it was holding can loosen under vibration, leading to misalignment, rattling, or in critical locations, compromised electrical connections or structural failures. Using the correct M4 specification ensures the nut seats fully and holds the designed clamping load without cross-threading or backing out prematurely.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.