Graco 120834 Screw Set Sch Flat Point

The genuine Graco 120834 Screw Set SCH Flat Point is a durable OEM replacement designed for secure, precision fastening in high-pressure spray systems.

High-grade stainless steel construction
Flat-point design for stable seating
Reliable fit for selected Graco sprayers
Ideal for pump and gun assembly maintenance

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Description

Part # 120834 – Screw Set SCH Flat Point by Graco

The OEM flat point set screw (Part Number 120834) is a precision-engineered component crafted by Graco. Built from durable stainless steel, this screw set is designed for high-performance coatings systems and airless spray assemblies. It provides strong sealing and consistent flow control, ensuring long-term reliability even under demanding conditions. It is particularly well-suited for integration within pump modules and gun assemblies where tight tolerances and robust performance are required.

Key features:

High-grade stainless steel construction for corrosion resistance.
Flat-point geometry to maximize contact area and reduce micro-slip between mating surfaces.
Precision machined thread and flat point for secure fit in professional spray equipment.
Compact dimensions: approx. 0.3″ × 0.15″ × 0.1″ (nominal) as specified. :contentReference[oaicite:1]{index=1}

Compatible Machines

The following Graco machines are known to accept the 120834 screw set (or its equivalent OEM variant). Please verify your model’s parts diagram to confirm compatibility.

Machine Model	Notes
Graco Ultra Max II 695	Standard professional airless sprayer machine.
Graco Ultra Max II 795	Designed for heavy-duty coatings; shares many internal components with 695 series.
Graco LineLazer 3900	Line-marking system; uses many Graco fluid-handling internals compatible with this screw set. :contentReference[oaicite:2]{index=2}

Installation & Maintenance Tips

Before installation, clean the seating area of any residue or corrosion to ensure proper fit and sealing.
Tighten the screw to the manufacturer’s recommended torque value (refer to your machine’s service manual) to avoid shear or deformation of the flat point tip.
Check adjacent seals and components—since this screw interfaces with fluid systems, any wear or leak here can impact filter life, flow consistency, and finish quality.
For machines operating at elevated pressures (e.g., above 3500 psi), inspect the screw and mating surfaces every ~2000 operational hours or during every major pump rebuild cycle. :contentReference[oaicite:3]{index=3}

Why Choose This OEM Screw?

Using the genuine 120834 set screw ensures tight dimensional tolerances, material quality (heat-treated stainless steel with passivation), and consistent mechanical performance — features often simplified or compromised in non-OEM alternatives. As described in the product specification, Graco’s OEM part undergoes rigorous testing (fatigue life, torque retention, anti-relief performance) to maintain spray system reliability. :contentReference[oaicite:4]{index=4}

Frequently Asked Questions

Possibly — if the older machine uses the same thread size, flat-point geometry and seating area as the 120834 part. Always check the parts diagram to confirm exact fit and dimensions. Using an incorrect screw may lead to improper sealing or component failure.

This is sold as a standalone replacement screw set (OEM part number 120834). It may also be included in some pump rebuild kits depending on the machine’s model and service manual, but you can purchase it separately for targeted maintenance.

While the part itself is engineered for high-pressure systems, you must ensure that the surrounding assembly (valves, seals, manifold) is rated for your machine’s working pressure. If your machine operates above 5,000 psi or with abrasive coatings, inspect seating surfaces more frequently and replace the screw as part of your maintenance cycle.

Need help? If you’re unsure whether this part fits your exact machine configuration, please contact your local Graco distributor or reference the service manual for your model. Using the correct part helps maintain finish quality, equipment reliability and minimises downtime.