Graco 120405 Hexagonal Head Washer Machined Screw

The Graco 120405 Hexagonal Head Washer Machined Screw is a durable, corrosion-resistant fastener designed for high-pressure sprayer systems. Perfect for maintaining secure and leak-free assemblies.

Material: 17-4 PH Stainless Steel
Thread: 1/4"-20 UNC, 20 TPI
Washer Head: 12 mm bearing surface
Compatible Machines: Graco Ultra Max II 490, 695, 1095, Mark V ProContractor

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Description

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