Graco 119791 Torx Hex Washer Head Machine Screw
$19.20
In Stock
The Graco 119791 Screw Mach Torx Hex Wash Hd is a high-strength OEM fastener designed for precision assembly and reliable sealing in Graco sprayers.
- Part #: 119791
- Head Type: Torx Hex Washer
- Material: 17-4 PH Stainless Steel
- Surface: Nitrided for added hardness
- Fits: GH Series, GMAX II, Ultra Max II, LineLazer
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Genuine OEM Part
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Graco 119791 Torx Hex Washer Head Screw Specifications
Compatible Machines
- Graco GH Series
- Graco GMAX II Series
- Graco Ultra Max II
- Graco LineLazer Series
Product Overview
The Graco 119791 Screw Mach Torx Hex Wash Hd is a high-strength fastener engineered for Graco airless sprayers and coating systems. Made from 17-4 PH stainless steel with a precision Torx hex washer head, it provides excellent corrosion resistance, superior torque transfer, and consistent sealing under pressure.
Key Features
- OEM Part Number: 119791
- Material: 17-4 PH Stainless Steel
- Head Type: Torx Hex Washer Head
- Surface Treatment: Nitrided for enhanced hardness
- Provides 25% higher torque capacity with six-lobe design
Technical Specifications
| Specification | Details |
|---|---|
| Part Number | 119791 |
| Thread Class | 6g Precision Tolerance |
| Material | 17-4 PH Stainless Steel |
| Drive Type | Torx Hex (Six-Lobe) |
| Surface Hardness | Rc 55 (Nitrided Finish) |
| Tensile Strength | 1500 MPa |
| Torque Capacity | Up to 12 N·m |
| Applications | Airless sprayers, pump manifolds, valve blocks, and sealing assemblies |
Performance Benefits
- Ensures consistent clamp force under high-pressure conditions
- Improves uptime with simplified maintenance and high wear resistance
- Reduces torque loss and prevents cam-out in high-vibration setups
- Designed for reliability in professional coatings and fluid systems
Frequently Asked Questions
The Graco 119791 is made from 17-4 PH stainless steel, chosen for its superior strength and corrosion resistance, and is nitrided for increased surface hardness.
Yes, the screw can be used in compatible systems that require the same Torx hex washer head and thread class. Always verify size and torque requirements before installation.
Apply a small amount of molybdenum disulfide paste to the threads, and torque in a cross pattern to the manufacturer’s specification (typically 10–12 N·m) for uniform preload and seal integrity.
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