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Graco 557374 Fitting, Fill Stud, 1/4 Npt

1/4 in. NPT fill stud fitting designed to provide a secure lubricant filling connection for compatible Graco lubrication systems.

  • Graco Part Number: 557374
  • 1/4 in. NPT male thread
  • Trabon-style fill stud design
  • Compatible with select Graco lubrication equipment
  • Genuine Graco OEM replacement part

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Reliable Lubricant Fill Connection for Graco Systems

Compatible Machines

Machine / System Compatibility
Graco LubriSystem® Equipment Compatible with LubriSystem® lubrication equipment using a 1/4 NPT fill stud.
Trabon Style Lubrication Systems Designed as a Trabon Style Fill Stud with a 1/4 in. NPT male connection.
Pneumatic & Hand Grease Pumps Suitable for compatible grease pumps that utilize the specified fill stud connection.

Product Overview

The Graco 557374 Fitting, Fill Stud, 1/4 NPT is a genuine OEM replacement fitting that provides a secure lubricant filling connection for compatible Graco lubrication systems. Manufactured with a 1/4 in. NPT male thread, it allows grease guns and filling equipment to connect efficiently while helping maintain clean, reliable servicing of centralized lubrication systems.

Key Features

  • Genuine Graco OEM replacement part.
  • 1/4 in. NPT male threaded connection.
  • Trabon Style Fill Stud design.
  • Provides a reliable lubricant filling point.
  • Supports clean, efficient lubrication system maintenance.

Frequently Asked Questions

It provides a dedicated filling connection for adding lubricant to compatible Graco centralized lubrication systems.

The fitting uses a 1/4 in. NPT male thread for secure installation.

It is intended for compatible Graco LubriSystem®, Trabon-style lubrication systems, and grease pumps that specify part number 557374. Always verify your equipment's parts manual before ordering.

Yes. Graco 557374 is a genuine OEM replacement fill stud designed for approved Graco lubrication equipment.

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