Multiquip 0021806016 Machine Screw

The Multiquip 0021806016 Machine Screw is a genuine OEM fastener designed for DCA series diesel generators, DAW series welders, and BLW series welders. As an authorized Multiquip OEM part, it is manufactured to the exact specifications required for proper assembly and secure component retention across the full range of compatible equipment. This screw is confirmed to fit an extensive lineup of DCA ultra-silent and super-silent generator models, including the DCA25, DCA45, DCA70, DCA125, DCA150, DCA180, DCA220, DCA300, DCA400, DCA500, DCA600, and DCA800 series, as well as DAW-500S and BLW-400SSW units. Sourcing the correct OEM fastener ensures the hardware meets the torque, thread, and material requirements called for in the original equipment design.

Key Features

• OEM Thread and Material Specification — Manufactured to the exact thread pitch, head profile, and material grade specified for Multiquip generator and welder assemblies, ensuring correct clamping force and retention.
• Direct Drop-In Installation — Matches the original mounting hole pattern and drive type, allowing straightforward installation without reworking mounting points or using thread adapters.
• Broad Fitment Across DCA, DAW, and BLW Series — Compatible with a wide range of DCA ultra-silent and super-silent diesel generators, DAW-500S welders, and BLW-400SSW welders in the Multiquip portfolio.
• Structural Integrity Under Vibration — A correctly specified machine screw maintains secure panel, bracket, and component connections on generator sets that produce sustained vibration during operation; a missing or mismatched fastener can lead to loosening and component damage over time.
• Electrical Safety Compliance — In generator and welder enclosures, properly rated fasteners are essential to maintaining grounding paths, panel alignment, and enclosure integrity, all of which affect safe electrical operation.

A machine screw is a precision-threaded fastener used to secure panels, brackets, covers, and internal components within generator and welder enclosures. Unlike a standard bolt, a machine screw threads into a tapped hole or mates with a nut to create a controlled, repeatable clamping force that keeps critical assemblies aligned and vibration-resistant during operation. When a machine screw is missing, stripped, or substituted with an incorrect size, it can compromise enclosure integrity, loosen electrical grounding connections, or allow components to shift under load — issues that are especially consequential in high-output diesel generator sets running at continuous duty.

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.