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Graco 105326 Hex Head Cap Screw

The Graco 105326 Screw Cap Hex HD is a heavy-duty OEM fastener built for high-stress applications, ensuring secure assembly and lasting performance in Graco equipment.

  • OEM Part #105326 – genuine Graco heavy-duty component
  • Designed for high-load and vibration resistance
  • Precision threads for consistent torque retention
  • Ideal for pumps, manifolds, and spray assemblies

$12.26
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Detailed Overview – Graco 105326 Screw Cap Hex HD

The Graco Screw Cap Hex HD (Part # 105326) is a heavy-duty, precisely engineered fastening component designed for secure and lasting clamping within high-performance fluid-handling and spray equipment. Built to endure elevated loads, vibration and demanding operating conditions, this hex-cap screw maintains joint integrity in assemblies subject to dynamic stresses and pressure variations.

Key Features

AttributeDetails
OEM Part Number105326
Design StyleHex-cap screw, heavy-duty (“HD”) specification for high-stress applications
FunctionProvides robust fastening and reliable preload retention to maintain mechanical integrity under vibration and cyclic loading
Material & ConstructionManufactured from high-strength alloy with precision-machined threads and head to ensure fit, durability and torque retention
ApplicationIdeal for heavy-duty sprayers, pump assemblies and other equipment where secure, long-term fastening is essential

Installation & Maintenance Tips

To ensure optimal performance and longevity of this critical fastener:

  • Shut down the system and relieve pressure before servicing bolted joints.
  • Clean mating surfaces and threads thoroughly—remove any old sealant, debris or corrosion to ensure proper seating.
  • Select the correct socket or wrench size for the hex head to avoid rounding or damage.
  • Tighten to the specified torque for your equipment; avoid over-tightening which can damage threads or deform the fastener.
  • During routine inspections, confirm the fastener remains secure and free of repeat loosening, thread wear, corrosion or deformation—replace immediately if any issues are observed.

Frequently Asked Questions

The “HD” designation indicates that the screw has been designed for higher load, vibration and pressure conditions compared to standard versions—using tougher material, greater head mass and tighter dimension controls.

While this fastener is engineered to factory specifications, verifying your machine’s parts breakdown or service manual ensures correct fitment for your specific model.

Replace the screw if you notice repeated loosening, visible wear to the hex head or threads, corrosion or inability to maintain preload—these conditions can compromise joint integrity.

Choosing the genuine Graco 105326 Screw Cap Hex HD and installing it following proper procedures helps ensure your equipment remains mechanically secure, operationally reliable and less prone to downtime.

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