Multiquip 8151 Flat Washer SAE 3/4

The Multiquip 8151 Flat Washer SAE 3/4 is a genuine OEM flat washer designed for a wide range of Multiquip and Whiteman equipment, including ride-on power trowels, roller screeds, mortar mixers, and flat saws. As a direct OEM replacement, part 8151 meets the original dimensional and material standards specified for these machines. Confirmed fitment spans models including JWN24HTCSL, HTN28K, HTN27K, HHNG5, HHN34TVD, HHN31V, WRS5200, WRS5200DFPU, WRSPUDF, WM120SH, WM120PH, SP2S20H, SP1E16A, and additional series across the Multiquip portfolio. When replacing hardware during scheduled maintenance or repairs, using the correct OEM-spec washer ensures fasteners seat properly and load is distributed as originally engineered.

Key Features

• OEM-Spec Material and Dimensions — Manufactured to the original SAE 3/4 standard, ensuring correct outer diameter, inner bore, and thickness for proper load distribution across fastened joints.
• Drop-In Hardware Replacement — Slots directly onto 3/4-inch fasteners without modification, maintaining original bolt clamp-force and surface contact area.
• Broad Multiquip Fleet Coverage — Fits ride-on trowels (JWN24HTCSL, HTN28K, HTN27K, HHNG5, HHN31V, HHN34TVD), roller screeds (WRS5200, WRSPUDF), Whiteman and Essick mixers (WM120SH, WM120PH, EM120S, EM120P), flat saws (SP2S20H, SP1E16A, SP1CE13H18), and light towers (MLT25DCA).
• Prevents Fastener Pull-Through and Surface Damage — A correctly sized washer spreads clamping load evenly, protecting mating surfaces from deformation and preventing fasteners from loosening under vibration.
• Genuine OEM Confidence — Sourced directly from Multiquip, part number 8151 is the same hardware used in original equipment assembly — no guesswork on sizing or grade.

A flat washer serves as a load-distributing interface between a fastener head or nut and the surface it clamps. By spreading the clamping force over a wider area, it prevents the fastener from pulling through softer materials, reduces surface marring, and helps maintain consistent bolt tension — particularly important on equipment subject to continuous vibration, such as trowels, screeds, and compaction machinery. When a washer is missing, undersized, or worn flat, fasteners can work loose over time, leading to component misalignment or structural joint failure during operation.

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.