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Graco 117638 Socket Head Cap Screw

The Graco 117638 Screw Cap Socket Head is a durable, high-strength fastener designed for secure connections in high-pressure sprayers.

  • Part Number: 117638
  • Head Type: Hex Socket
  • Material: Alloy Steel with Black Oxide Coating
  • Compatible Machines: RTX 1500, RTX 2000, ST Max II, Ultra Max II 495
  • Max Torque: 85 in-lb

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Compatible Machines & Graco 117638 Screw Cap Socket Head Details

The Graco 117638 Screw Cap Socket Head is a high-quality fastener designed for reliable performance in airless sprayer systems. It ensures secure sealing, consistent flow, and long-lasting durability.

Compatible Machines

  • Graco RTX 1500
  • Graco RTX 2000
  • Graco ST Max II
  • Graco Ultra Max II 495

Key Features

  • High-strength alloy construction for long-lasting seal integrity
  • Socket head design for easy maintenance in tight spaces
  • Precision thread engagement to maximize pump efficiency
  • Compact dimensions: 0.1337″ × 0.1337″ × 0.1337″
  • Temperature range: -30°C to 150°C

Design Specifications

Material Alloy Steel with Black Oxide Coating
Thread Type ISO Standard
Head Type Hex Socket
Torque Up to 85 in-lb
Hardness Rockwell C 38–42

Frequently Asked Questions

It is compatible with Graco RTX 1500, RTX 2000, ST Max II, and Ultra Max II 495 machines.

Yes, it maintains secure seal engagement under pressures exceeding 5,000 PSI.

Inspect every 6,000 operating hours or during routine pump overhauls to ensure proper torque and seal integrity.

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