Wacker Neuson 5100015521 Fitting Zerk 1/4-28 Self Tap

The Wacker Neuson Fitting Zerk 1/4-28 Self Tap is a genuine OEM component designed for the 60", 72", and 84" Vacuum Ready Sweeper series, including the Heavy-Duty Pick-Up Broom and Heavy-Duty VRS Pick-Up Broom models. As a direct factory part, is manufactured to Wacker Neuson's exact specifications, ensuring it seats and seals correctly in the grease port without the guesswork of adaptation. This self-tapping design threads directly into the base material, making installation straightforward during scheduled maintenance or component rebuild. Keeping a correct-spec zerk fitting in place is essential to protecting pivot points and broom shaft bearings from premature wear.

Key Features

• Self-Tapping Thread Engagement — The 1/4-28 self-tapping thread cuts its own seat on installation, eliminating the need for a pre-tapped hole and simplifying field repairs.
• OEM Grease Passage Integrity — Manufactured to Wacker Neuson's original specification, this fitting delivers the correct internal orifice geometry for consistent grease flow to lubricated joints.
• Direct-Fit for Vacuum Ready Sweeper Series — Confirmed fitment across the 60", 72", and 84" Vacuum Ready Sweeper models, including Heavy-Duty Pick-Up Broom and Heavy-Duty VRS Pick-Up Broom variants.
• Protects Bearings and Pivot Points — A properly seated zerk fitting maintains full lubrication at critical wear points; a damaged or missing fitting starves bearings of grease and accelerates component failure.
• Genuine Wacker Neuson Part — Sourced directly from Wacker Neuson, part 5100015521 carries full OEM traceability and is the authorized replacement for this application.

A zerk fitting — also called a grease nipple — is the entry point through which grease is injected into a bearing, pivot, or shaft housing during routine lubrication service. It contains a small spring-loaded ball that opens under pressure from a grease gun and reseals when the gun is removed, preventing contaminants from entering the lubrication cavity. When a zerk fitting is damaged, cross-threaded, or missing entirely, grease cannot reach the intended surface, causing metal-to-metal contact, accelerated wear, and eventual component seizure on broom shafts and pivot assemblies.

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.

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