Multiquip 915315 HHC Screw 5/8-11 x 3 GR8

The Multiquip 915315 is a genuine OEM HHC Screw 5/8-11 x 3 GR8 designed for SP, PS, and CS series pavement saws and flat saws. As a direct Multiquip replacement fastener, 915315 meets the original torque and clamping specifications required by these machines. Compatible models include SP, PS, and CS series saws such as SP303516, SP605730, PS403016, PS706036, CS403016, CS706036, and many more within the SP, PS, and CS families. Sourcing the correct grade-8 fastener matters — using an undersized or lower-grade screw in a high-vibration cutting application can lead to joint loosening, structural misalignment, or blade guard failure.

Key Features

• Grade 8 Tensile Strength: — Rated at the highest common SAE fastener grade, this screw delivers the clamping force needed to hold critical structural joints tight under the sustained vibration of pavement sawing operations.
• Correct Thread Form for Direct Installation: — The 5/8-11 UNC thread spec matches the tapped bores used across SP, PS, and CS saw frames, so the fastener seats and torques properly without thread chasing or modification.
• Broad Saw Family Coverage: — A single part number covers SP3035, SP4034, SP6057, SP7060, PS4030, PS7060, CS4030, and CS7060 series models, making 915315 a practical stock item for saw fleets.
• Vibration-Resistant Clamping: — The 3-inch grip length and GR8 proof load rating maintain joint preload during blade engagement, reducing the risk of fastener backing out during a cut.
• Structural Safety Compliance: — Blade guards, depth-adjustment brackets, and frame covers on pavement saws rely on correctly rated fasteners to stay in position. Substituting a lower-grade bolt in these locations creates a safety risk during operation.
• Genuine Multiquip OEM Part: — Supplied to the exact material and dimensional specification used in original saw assembly, so the replacement matches what came off the machine.

A hex head cap screw (HHC) is a structural fastener used to clamp two or more machine components together with a specified clamping force set by tightening to a target torque value. On pavement and flat saws, grade-8 cap screws are specified for joints that must resist both the static weight of the machine and the dynamic vibration generated during cutting. When a fastener of this type stretches, strips, or is replaced with a lower grade, the clamped joint can shift or separate — leading to misaligned blade guards, loose depth stops, or frame movement that directly affects cut quality and operator safety.

DHS Equipment is an authorized Multiquip parts dealer. If you need help confirming that this part is the correct fastener for your specific saw model, contact our parts team before ordering.

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.