Multiquip EE43525 Cap Screw Hex Head Grade 8 5/8-18 1 3/4 Lg.

The Multiquip EE43525 is a genuine OEM Cap Screw Hex Head Grade 8 5/8-18 1 3/4 Lg. designed for Multiquip trailer models including TRLR45H, TRLR45E, TRLR502XFH, TRLR502XFE, TRLRSG1600XFH, and TRLRSG1600XFE. As a Grade 8 fastener, this cap screw meets the high-strength torque and clamping requirements demanded by trailer structural connections. Sourced directly from Multiquip, part EE43525 ensures correct thread specification, head geometry, and tensile rating for a direct, no-compromise installation. Keeping critical fastener positions filled with the correct OEM hardware helps maintain the structural integrity and safety performance of your trailer equipment.

Key Features

• Grade 8 Tensile Strength — High-strength classification delivers the clamping force and shear resistance required for load-bearing trailer connections.
• Exact Thread Specification — 5/8-18 fine-thread pitch matches OEM-specified threaded positions for a flush, full-engagement installation without rethreading.
• Correct Bolt Length — 1 3/4 in. length is sized to achieve proper fastener protrusion and thread engagement as originally engineered.
• Broad Trailer Fitment — Compatible with Multiquip trailer models TRLR45H, TRLR45E, TRLR502XFH, TRLR502XFE, TRLRSG1600XFH, TRLRSG1600XFE, and TRAILER series equipment.
• Structural Safety Compliance — Replacing worn or incorrect-grade fasteners on trailer frames and hitching points with OEM-spec hardware is essential to safe towing and load security.
• Genuine OEM Part — Supplied by Multiquip to the same specification as the original, ensuring consistent hardness rating, hex head dimensions, and surface treatment.

A hex head cap screw is a structural fastener used to clamp two or more components together at a fixed, torqued connection point. On trailer equipment, cap screws like the part are commonly used at frame joints, axle mounts, coupler assemblies, and other high-stress locations where a precise clamping load must be maintained. Grade 8 designates the highest standard SAE strength classification for inch-series fasteners, meaning the bolt is engineered to resist both tensile pull-out and shear forces without yielding. Using an incorrect grade or non-matching thread pitch in these positions can result in fastener failure, loosening under load, or structural damage to the trailer — making correct part selection critical wherever this screw is specified.

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.