Description
Product Overview
These 4-pack 1/2-inch NPT female lock nuts are crafted from high-quality brass for superior strength and temperature resistance. Designed with a flange and integrated gasket, they ensure leak-free connections in demanding environments. Perfectly suited for water, gas, and oil applications, these fittings deliver consistent performance across residential and industrial settings. Each set includes four locknuts with washers to simplify installation and maintenance.
Usage
Ideal for outdoor applications such as garden irrigation, air conditioning units, washing machines, and industrial plumbing systems. These locknuts are commonly used in HVAC installations, automotive repair, and home maintenance projects where reliable pipe connections are essential. Their flexible design allows compatibility with various piping materials including copper, steel, and PVC.
Why Choose Us
Manufactured by Qulkws using premium brass for long-lasting durability and corrosion resistance. Each nut is precision-machined to ensure perfect thread alignment, reducing the risk of leaks or loosening over time. The flange design provides added stability during installation. Customer support is available for technical assistance or replacement parts if needed.
Key Features
- Durable brass construction resists corrosion and extreme temperatures, ensuring long-term performance.
- Flange design with integrated gasket provides a secure, leak-free connection for water, gas, or oil systems.
- Flexible application across residential and industrial plumbing tasks including HVAC, washing machines, and garden setups.
- Precision threading ensures tight fit and reliable performance without over-tightening risks.
- Each set includes four locknuts with washers for easy installation, replacement, or emergency repairs.
FAQ
Are these locknuts suitable for outdoor use?
Yes. These brass female locknuts are designed to withstand exposure to moisture and varying temperatures, making them ideal for outdoor applications such as garden irrigation systems or HVAC units.
Can I use these with PVC pipes?
These fittings are primarily designed for metal piping systems like copper or steel. While they may work in some cases with PVC, it’s recommended to verify compatibility with the specific pipe material and pressure rating.
What is the thread size of these locknuts?
The locknuts feature a 1/2-inch NPT female thread, compatible with standard plumbing fittings that match this specification.
Do I need additional tools to install them?
No. These locknuts are designed for straightforward installation using basic hand tools such as wrenches or pliers. The flange design helps prevent over-tightening and ensures even pressure distribution.
What is the warranty or return policy?
Qulkws offers a standard 30-day satisfaction guarantee on all products. If you encounter any issues, contact customer support for assistance with replacements or refunds.








Ignition Coil NIBBI DHXQ-C Motorcycle Bolt-On with Machined Exterior
Tomberlin Crossfire 150R Ignition Coil Kit - GY6 150cc Upgrade
Spark Plug and Ignition Coil 1PZ for Predator Gas Generator HG2-F07
ATV Ignition Coil HIAORS IG078 Universal Fit 110cc-125cc Dirt Bike
ATV Wiring Harness Kit amavoler 8‑Piece System for 150‑250CC Quad
Hipa Ignition Coil for Tractor Male Screw In Fit for Kohler Engines
TRKIMAL Ignition Coil GY6 4‑Stroke 50‑150cc ATV Plug‑In Female
GY6 Ignition Coil Kit GDDGHS 22030 Fit for 50cc‑150cc Scooters & ATVs
CDI BOX Ignition Coil Voltage regulator rectifier Relay Kit For HONDA 1993 FourTrax 300 TRX300 TRX300FW 30410-HC4-770
Windance Wiring Harness for 50-110cc ATVs & Beach Bikes Copper Kit
Ayiddue Polaris Sportsman 500 Ignition Coil Kit with CDI and Relay
binifiMux 20Pcs M8 x 1.25mm Stainless Steel Lock Nuts for Automotive
FVRITO Ignition Coil for Bike and Go Kart - Copper Core Universal Fit
Superior Electric LN5811ML 5/8-11 Inch Thread Quick Change 2 Inch O.D Disc Flange Grinder Lock Nut
PZ20 Carburetor Ignition Coil Starter Motor Relay Voltage Regulator CDI Box Kit Compatible with Tao tao Coolster 125cc 110cc Kazuma Baja 50cc Chinese ATV Quad 4 Wheeler Go Kart Dirt Bike Parts
2Pcs Angle Grinder Flange Nuts with 5/8-11 Inch Thread, Quick Change Grinder Flange Locking Nut Metal Angle Grinder Nut for Replacement/Fixing Cutting Discs
MOTO1988 Ignition Coil for Honda ATV Platinum 30510-HM7-003
LK LEAPING KNIGHT Magneto Stator SC-GY125 All Copper 6 Pole for ATV
Honda Foreman 450 Ignition Coil MOTO1988 Chrome Self Adhesive Kit
145 PCS Nylon Insert Lock Nuts Assortment Kit, Metric M3-M12, 304 (A2-70) Stainless Steel Lock Nuts, Hex Nut Set for Industrial and Home Use
Stainless Steel Bathroom Tap Lock Nut DGBRSM Hex Brass Faucet Nut
MOTO1988 Ignition Coil for Polaris Ranger 4x4 with Cap and Spark Plug
Reviews
There are no reviews yet.