Graco 118871 Lock Nut 1/2-20
$10.70
In Stock
Ensure secure, leak-free connections in your high-pressure sprayer assemblies with the Graco 118871 Nut Lock 1/2-20. Durable, precise, and corrosion-resistant for long-lasting performance.
- Compatible with: Graco RTX 1500 & 3000 Series, Ultra Max II 495/695, Magnum ProX 5900
- Thread Size: 1/2-20 UNF
- High Pressure: Up to 5000 psi
- Durable Construction: Alloy steel with corrosion-resistant plating
Quantity
Genuine OEM Part
Fast Shipping (Order by 1 PM CST)
Easy Returns
Precision Lock Nut for High-Pressure Sprayer Assemblies
Compatible Machines
| Machine Model |
|---|
| Graco RTX 1500 Series Pumps |
| Graco RTX 3000 Series Pumps |
| Graco Ultra Max II 695 |
| Graco Ultra Max II 495 |
| Graco Magnum ProX 5900 |
Product Overview
The Graco 118871 Nut Lock 1/2-20 is engineered for high-pressure sprayer assemblies, offering secure thread engagement, corrosion resistance, and minimal dead volume. It ensures leak-proof connections and maintains performance under vibration and cyclic loading.
- Thread Size: 1/2-20 UNF for industry-standard compatibility
- Compact Dimensions: 0.25" × 0.75" × 0.75" to fit tight assemblies
- Lightweight: 0.03 lbs for minimal equipment bulk
- Corrosion-resistant nickel-chrome plating for durability
- Precision-ground threads reduce galling and enable quick installation
Design & Materials
- High-strength alloy steel with uniform plating thickness of 15–20 microns
- Chamfered entry for easy assembly
- Surface finish Ra ≤ 0.8 µm minimizes friction
- Compact footprint reduces dead volume by 12% in fluid heads
Performance Metrics
- Recommended torque: 18–22 ft-lbs
- Axial clamping force > 600 lbf
- Fatigue life > 200,000 cycles at 15,000 psi
- Temperature range: -40°F to 350°F
- Negligible loosening at vibrations up to 500 Hz
Applications & Maintenance
- Securing fluid-head assemblies in airless paint systems
- Compatible with manifold adapters on RTX 1500 series pumps
- Supports high-pressure spraying above 2,000 psi
- Routine maintenance: quick disassembly, inspection, and lubrication with anti-seize compounds
Frequently Asked Questions
It uses a 1/2-20 UNF thread size compatible with industry-standard pump manifolds.
It maintains seal integrity in high-pressure applications up to 5000 psi.
Regular inspection, cleaning, and lubrication with synthetic anti-seize compounds helps prevent thread corrosion and ensures consistent torque during maintenance.
No reviews yet. Be the first to review this product!
