Graco 120405 Hexagonal Head Washer Machined Screw

Graco 120405 Screw – High-Performance Fastener

The Graco 120405 Hexagonal Head Washer Machined Screw is engineered for precision, durability, and optimal performance in high-pressure fluid systems and airless sprayer assemblies.

Compatible Machines

• Graco Ultra Max II 490
• Graco Ultra Max II 695
• Graco Ultra Max II 1095
• Graco Mark V ProContractor

Key Features

• Material: 17-4 PH stainless steel, hardness ≥ Rockwell C28
• Thread: 1/4"-20 UNC, 20 TPI rolled thread for fatigue resistance
• Corrosion-resistant: Passivated stainless steel for long-term reliability
• Washer Head: 12 mm bearing surface for even load distribution
• Applications: Spray-pump manifolds, filter housing lids, pressure regulator assemblies

Operational Benefits

• Enhances pump efficiency by maintaining rigid assembly integrity
• Reduces fluid leaks with optimized thread and washer-head interface
• Supports high-viscosity materials like epoxies, urethanes, and industrial coatings
• Facilitates fast assembly and maintenance with standard 10 mm socket tools

Frequently Asked Questions