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Graco 15C980 Jam Nut

$27.50
In Stock
Part #: 15C980

The Graco 15C980 Jam Nut is an OEM locking nut that secures critical connections in Graco sprayers, preventing loosening under vibration and pressure. Key points:

  • Genuine Graco part for pump and hose assemblies
  • Durable, precision-machined metal
  • Keeps connections tight and leak-free
  • Easy to install and replace
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Graco 15C980 Jam Nut Overview

The Graco 15C980 Jam Nut is a genuine OEM locking nut designed to secure critical pump or hose‑connection parts in Graco sprayers. It prevents loosening under vibration and high‑pressure operation.

Key Features

  • OEM‑specified jam nut for reliable locking in Graco assemblies
  • Threaded design to maintain a secure mechanical joint
  • Precision-machined for tight tolerances and correct torque retention
  • Resists loosening under repeated use, vibration, or pressure cycling
  • Compact size fits within tight pump housing or suction assemblies

Technical Specifications

Specification Detail
Part Number 15C980
Type Jam Nut
Material Metal alloy (durable for pressure‑joint locking)
Weight ~ 0.10 lb (per seller data) 
Typical Use Securing connections in pump, suction, or fluid‑delivery assemblies

Applications & Benefits

Using the 15C980 Jam Nut offers important advantages:

  • Prevents critical pump or hose connections from loosening during operation.
  • Improves system reliability by maintaining tight mechanical joints.
  • Helps to maintain consistent fluid flow and pressure by eliminating unwanted movement.
  • OEM-grade part ensures compatibility and performance integrity.

Installation & Maintenance

  • Ensure the mating threads are clean before installation.
  • Thread the 15C980 nut onto the male fitting and hand-tighten first.
  • Use proper torque (if specified in your sprayer’s manual) to lock it without damaging the threads.
  • Inspect periodically for looseness, especially after high‑vibration use.
  • Replace the nut if threads are stripped or if it fails to maintain tightness.

Frequently Asked Questions

A jam nut is used to lock another threaded component in place, preventing it from loosening under vibration or pressure.

Yes, the 15C980 is an OEM Graco jam nut, listed in Graco parts diagrams for pump and suction assemblies. 

Replace the nut if its threads are damaged, stripped, or if it no longer stays tight under vibration or pressure.

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