Husqvarna 542020312 Hex Head Cap Screw .3125-18 X .5 Grade 5 Zinc

The Husqvarna 542020312 Hex Head Cap Screw.3125-18 X.5 Grade 5 Zinc is a genuine OEM fastener designed for the MS510 and MS510G tile and masonry saws. This screw is manufactured to the exact thread pitch, length, and grade specification required by Husqvarna, ensuring a secure, correctly torqued connection at every installation point. As a genuine OEM component, it matches the original hardware used at the factory — so there is no guesswork about grade rating or finish compatibility. DHS Equipment supplies this part to help keep your equipment running with the right hardware in every position.

Key Features

• Grade 5 Zinc Construction — Built to the same tensile strength and corrosion-resistance rating as the original fastener, ensuring the joint holds under the vibration and load demands of masonry cutting.
• Exact Thread and Length Match — Specified at .3125-18 (5/16"-18 UNC coarse thread) by .5" length, this screw threads directly into existing hardware points without chasing or reworking.
• Genuine OEM Part — Sourced directly from Husqvarna, cross-reference part number 542020312 against your parts diagram to confirm the correct position before ordering.
• Confirmed MS510 and MS510G Fitment — Compatible with both the MS510 and MS510G tile and masonry saws, covering the full production range of this saw family.
• Structural Integrity Restored — A stripped, corroded, or missing cap screw can allow panels, guards, or assemblies to shift during operation; replacing it with the correct-grade OEM fastener restores the rigidity the design depends on.

A hex head cap screw is a structural fastener used to clamp assemblies, secure housings, and anchor components to the saw's frame or table. On a tile and masonry saw like the MS510 and MS510G, these fasteners are subject to constant vibration from blade contact with hard materials, making the correct grade and thread engagement critical. A fastener of the wrong grade or thread specification can back out under load, strip the receiving thread, or fail to hold clamping force — any of which can compromise the alignment or safety of the assembly it secures.

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.