Graco 111839 Mach Screw Pnh Sems

The Graco 111839 Screw, Mach PNH SEMS is a genuine OEM screw with a pre-assembled washer, ensuring secure and easy installation across multiple Graco systems.

Part Type: Machine Screw (Pan Head with SEMS Washer)
Use: Mounting control boards, panels, and housings
Compatible Models: LineLazer IV 253920 & 253921, Model 311021
OEM Quality: Durable, corrosion-resistant Graco original

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Description

Graco 111839 Screw, Mach PNH SEMS – Details and Compatibility

The Graco 111839 Screw, Mach PNH SEMS is a precision-engineered fastening component used in several Graco machines. It’s designed with a pan-head (PNH) and a SEMS washer, making it a reliable and easy-to-install screw for securing control boards, panels, and other mechanical assemblies.

Compatible Machines

Graco LineLazer IV Automatic Layout System – Models 253920 & 253921
Graco Model 311021 – Various Spray and Layout System Components
Additional Graco equipment featuring control panels or electronic housings (check your model’s parts list)

Part Description

Part Number	Description	Head Type	Features
111839	Screw, Mach (Machine Screw)	Pan Head (PNH)	Pre-assembled washer (SEMS) for quick installation

This Graco machine screw is primarily used for mounting control boards, electronic panels, and small housings. The integrated SEMS washer reduces assembly time and ensures consistent fastening pressure.

Key Features

Original Graco OEM part for guaranteed fit and performance
SEMS washer reduces slippage and improves assembly reliability
Corrosion-resistant material suited for long-term industrial use
Used in LineLazer IV and other Graco spray system assemblies

Frequently Asked Questions

“SEMS” refers to a pre-assembled washer attached to the screw. This design simplifies installation and ensures consistent fastening without needing a separate washer.

To ensure compatibility, check your machine’s repair or parts manual. Look for part number 111839 in the screw or fastener list. You can also compare the specifications and screw type listed here.

Yes, this is an original Graco OEM part, ensuring perfect fit, durability, and manufacturer-backed quality assurance.