Asc Engineered Solutions 319913489 Lock Nut 3/4 Inch

Product Description

The ASC Engineered Solutions 319913489 is a 3/4-inch galvanized malleable iron lock nut used to secure threaded pipe fittings and conduit connections in mechanical and plumbing systems. Malleable iron construction provides the ductility needed to resist vibration and mechanical stress without cracking. The galvanized finish delivers corrosion resistance suitable for damp or exposed installation environments. This lock nut is installed by licensed plumbers, pipefitters, and mechanical contractors as part of threaded pipe assemblies where a secure, vibration-resistant connection is required.

This lock nut is suited for residential and light commercial plumbing, mechanical piping, and conduit applications where a 3/4-inch threaded connection requires positive locking. It fits standard 3/4-inch NPT threaded pipe and fittings. Typical install scenarios include securing bushings, fittings, and nipples in water supply lines, gas distribution piping, and conduit runs where movement or vibration could otherwise loosen connections over time.

Key Features

• 3/4-inch fitting size for standard NPT threaded pipe and fittings
• Malleable iron construction resists cracking under mechanical stress and vibration
• Galvanized finish provides corrosion resistance in damp or exposed environments
• Lightweight at 0.09 pounds per unit for easy handling and installation
• Threaded design allows fast installation with common hand tools

Compatibility

Designed as an OEM-style replacement and standard fitting for 3/4-inch NPT threaded pipe assemblies in plumbing, mechanical, and conduit applications.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable IPC and IFGC code requirements. Shut off and depressurize the pipe system before working on any threaded connection. Use a pipe wrench or adjustable wrench to tighten the lock nut firmly against the fitting surface. Apply thread sealant or PTFE tape as required by the application before assembly.

Technical Specifications

• Fitting Size: 3/4 inches
• Material: Galvanized Malleable Iron
• Weight: 0.09 pounds

Standard Information

• Brand: ASC Engineered Solutions
• Manufacturer Part Number: 319913489