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Graco 158874 Hex Nut

The Graco 158874 Hex Nut is a durable jam nut designed to secure fittings and prevent loosening in high-pressure pump systems.

  • Thread size: 11/16-16 UNC
  • Used in Graco 306-560 Series E & B pumps
  • Locks fittings or rods in place
  • Essential for reliable fluid handling

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Graco 158874 Hex Nut – Compatibility & Details

The Graco 158874 Hex Nut is a durable 11/16-16 jam nut designed for industrial fluid-handling equipment. It is essential for securing fittings and ensuring reliable operation in high-pressure systems. Use only genuine or equivalent quality nuts for safe performance.

Compatible Machines

Machine Model Series Description
Graco 306-560 Series E & B 2:1 Standard Circulating Supply Pump (55-gallon drum)

Key Features

  • Genuine Graco 158874 hex jam nut
  • Thread size: 11/16-16 UNC
  • Used to lock fittings or rods in place to prevent loosening
  • Essential for high-pressure fluid handling systems
  • Compatible with multiple Graco pump assemblies

Frequently Asked Questions

The thread size is 11/16-16 UNC, suitable for multiple Graco pump fittings.

Yes, this nut is commonly used in Graco pump assemblies that require an 11/16-16 jam nut. Always verify compatibility with the specific model and series.

A jam nut is used to lock another nut or fitting in place, preventing loosening under vibration or pressure cycles, ensuring safe and reliable operation.

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