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Graco 165599 Stud

The Graco 165599 Stud is a 3/8" NPT male threaded OEM component designed for secure fluid connections in valve and manifold assemblies.

  • Thread size: 3/8" NPT (male)
  • Used in valve/manifold assemblies
  • Ensures leak-free, precise fit
  • OEM-grade replacement part

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OEM Valve Stud 3/8" NPT(M) – Precision Fit for Graco Assemblies

Compatible Machines

This part is used in select Graco manifold/valve assemblies. Compatibility depends on the assembly that specifies a 3/8" NPT (male) stud. Please confirm using your sprayer or system’s parts manual before ordering.

Part Number Graco 165599 Stud
Description Threaded stud used in valve/manifold assemblies; provides a secure, leak-resistant NPT connection.
Thread / Size 3/8" NPT (male)
Typical Location Ball-valve or manifold connection points within fluid handling assemblies.
Use Case Replacement during service/rebuilds when the original stud is worn, damaged, or leaking.
Related Notes If your assembly specifies a different thread (e.g., 1/4" NPT), this part will not fit—verify the exact thread in the manual.

Features & Benefits

  • OEM geometry for proper alignment and sealing in Graco valve/manifold assemblies.
  • 3/8" NPT(M) thread for common high-flow connection points.
  • Designed for durability in professional coating and fluid transfer environments.

How to Confirm Fitment

  1. Check your unit’s exploded parts diagram and confirm the stud call-out is 165599.
  2. Verify the required thread is 3/8" NPT (male) at the intended connection.
  3. Match the assembly (valve/manifold) model number referenced in your documentation.

What’s Included

  • 1 × 165599 Stud

Frequently Asked Questions

Confirm in your machine’s parts manual that the stud call-out is 165599 and that the assembly specifies a 3/8" NPT (male) stud for that position.

No. This part is 3/8" NPT (male). If your assembly requires 1/4" NPT, this will not fit. Always match the thread size in your documentation.

Yes, it’s specified as an OEM-grade replacement for assemblies that call out 165599 in the parts list.

Inspect mating threads, use appropriate thread sealant per your manual, and torque to the specification provided for your valve/manifold assembly.

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