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The ASC Engineered Solutions 8700162707 is a 1-1/2 inch malleable iron galvanized lock nut used to secure threaded pipe fittings and prevent loosening in piping assemblies. It is manufactured from malleable iron with a hot-dip galvanized finish for corrosion resistance. This fitting meets multiple federal and industry standards, including Fed. Spec. WW-P-521F, ANSI B-16.3 for dimensions, ANSI B-2.1 for pipe threads, ASTM A-197 for chemical and physical properties, ASTM A-153 for galvanizing, and Fed. Spec. WW-P-471-B. Plumbers and pipefitters install this fitting in standard threaded piping systems.
This lock nut is suited for use in residential and commercial plumbing, mechanical piping, and general industrial piping applications where a 1-1/2 inch threaded connection requires positive locking. The galvanized finish makes it appropriate for systems with moderate corrosion exposure. It is sold individually and is compatible with standard tapered pipe threads per ANSI B-2.1.
Designed as an OEM-style replacement or new-installation fitting for standard 1-1/2 inch threaded malleable iron piping systems conforming to ANSI B-16.3 dimensional standards.
Installation is performed by a licensed plumber or pipefitter following applicable IPC and local mechanical code requirements. Shut off and depressurize the piping system fully before disassembly or installation. Use a properly sized pipe wrench and apply thread sealant or PTFE tape to threaded joints as required by the project specification. Do not over-tighten; engage threads fully and hand-snug before applying wrench torque.
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