Multiquip 13339-001 External SHKP 5/16 Washer

The Multiquip 13339-001 is a genuine OEM External SHKP 5/16 Washer designed for a wide range of Multiquip equipment including LT6K and MLT25DCA light towers, HTN27K and HTN28K mechanical ride-on trowels, and MP200-Series masonry saws. As a direct OEM replacement, this washer is produced to the same specifications as the original hardware, ensuring a correct and secure fit at every fastener location it serves. Sourced directly through authorized Multiquip supply channels, 13339-001 is the part number to use when replacing worn, damaged, or missing washers during scheduled service or repair work. DHS Equipment stocks this genuine OEM component so you can complete your repair with confidence using the correct hardware.

Key Features

• Genuine OEM Hardware Integrity — Manufactured to exact Multiquip specifications, ensuring the correct material hardness and dimensional tolerance for a 5/16 external shake-proof washer application.
• Direct Drop-In Replacement — Matches the original fastener assembly point-for-point, seating flush without rework or additional hardware.
• Broad Equipment Compatibility — Fits LT6K and MLT25DCA towable light towers, HTN27K and HTN28K mechanical ride-on trowels, and MP200-Series masonry saws.
• Vibration and Loosening Resistance — The external shake-proof tooth profile grips mounting surfaces under continuous vibration, helping maintain fastener clamp load during operation.
• Critical Fastener Safety — In vibration-intensive equipment such as trowels and light towers, a properly rated shake-proof washer is essential to prevent fastener backing out during operation.

An external shake-proof washer — sometimes called an external tooth lock washer — functions by biting into both the fastener face and the mating surface when torqued down, creating mechanical resistance against rotational loosening caused by vibration and dynamic loading. On equipment like ride-on trowels, light towers, and masonry saws, drivetrain and engine vibration place constant stress on fastened joints, making the use of the correct washer grade and profile critical to maintaining assembly integrity. When this washer is worn flat, missing, or substituted with an incorrect type, fasteners can back out progressively, leading to loose assemblies, accelerated wear on surrounding components, and potential structural or operational failures.

For questions about fitment or to confirm this is the right part for your machine, contact the DHS Equipment 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.