Value Collection CNFI5150-010BX Castle Lock Nut 1-1/2-12

Product Description

The VALUE COLLECTION CNFI5150-010BX is a castle lock nut used to secure threaded fastener assemblies where a cotter pin or safety wire is required to prevent loosening under vibration or dynamic load. Machined from Grade 5 steel with a bright, uncoated finish, this nut measures 1.5 inches in height and 2.25 inches across the flats. The slotted crown accepts a cotter pin through a drilled shaft, locking the nut in position without relying on friction alone. It is commonly installed by millwrights, machine assemblers, and maintenance mechanics in industrial and mechanical applications.

This castle lock nut is suited for applications involving rotating shafts, wheel hubs, spindles, and bearing retainers where positive locking is critical. The right-hand thread direction and 1-1/2-12 fine thread pitch make it appropriate for high-load assemblies requiring precise preload control. The Grade 5 steel construction provides a balance of strength and machinability for general industrial use. Bright finish indicates no additional corrosion protection is applied, making it appropriate for dry or controlled environments.

Key Features

• Castle-style slotted crown accepts cotter pin or safety wire for positive anti-rotation locking
• 1-1/2-12 fine thread pitch for precise preload adjustment in bearing and spindle applications
• Grade 5 steel construction for solid mechanical strength in industrial assemblies
• Bright, uncoated finish for use in dry or controlled environments
• Right-hand thread direction, conforming to ANSI B18.2.2 fastener standard
• 2.25 inches across flats for standard wrench engagement

Compatibility

Designed as a standard replacement or service nut for threaded shaft assemblies using a 1-1/2-12 fine thread pattern conforming to ANSI B18.2.2.

Installation Notes

Installation typically requires a properly sized open-end or box wrench sized for 2.25 inches across flats. Always ensure the mating shaft is threaded to 1-1/2-12 specification before installation. Power down or de-energize any associated machinery before servicing bearing or spindle assemblies. Insert a correctly sized cotter pin through the shaft hole and the nut slot after torquing to secure the assembly against rotation.