Premium Brass Compression Nuts (8mm - 54mm)

Secure your plumbing joints and guarantee a leak-free seal with our Premium Brass Compression Nuts. Designed to thread seamlessly onto standard compression fittings, these heavy-duty nuts are the essential final step in creating a watertight mechanical joint. As the nut is tightened with a spanner, it compresses the internal olive against the pipe, sealing the connection safely and effectively without the need for heat or solder.

Manufactured from high-quality solid brass, these replacement nuts are built to withstand high pressures and daily wear. Whether you have lost a nut, are replacing a damaged fitting, or are building a complex central heating system, these compression nuts provide the reliability that professional plumbers and DIYers demand.

Plumbing Benefits:

• Solder-Free Security: Creates a highly secure, watertight mechanical joint using just an adjustable spanner—perfect for safe repairs in confined or fire-risk areas.

• Easily Demountable: Allows the joint to be safely loosened, disassembled, and reassembled for future maintenance or pipework alterations.

• High-Pressure Reliability: Engineered to maintain a tight grip under high water pressures in both hot and cold systems.

• Prevents Overtightening Damage: The precision-machined threads allow for smooth turning, reducing the risk of cross-threading or stressing the brass fitting.

Key Features:

• Material: Heavy-duty, corrosion-resistant solid brass.

• Design: Standard hexagonal (hex) shape provides a secure grip for spanners and wrenches.

• Application: Suitable for pressurized hot water, cold water, and central heating pipework.

• Category: Compression Fittings / Nuts.

• Compatibility: Designed to fit flawlessly with all standard metric brass compression fittings and olives.

Available Sizes (Select via Dropdown):

• 8mm 

• 10mm

• 12mm 

• 15mm

• 22mm 

• 28mm 

• 35mm 

• 42mm 

• 54mm