The NESCO LK-40 is a 4-inch rigid conduit locknut engineered for demanding commercial and industrial installations. Designed for professional electricians and contractors, it delivers a secure, vibration-resistant connection between rigid metal conduit (RMC) and enclosures, pull boxes, panelboards, and service entrance equipment. Its robust steel construction and precision threading make it a reliable choice on busy job sites where a tight, code-compliant fit is non-negotiable — whether you're roughing in a large industrial panel or terminating conduit runs in a utility room.

Specifications

Trade Size 4"
Model LK-40
Conduit Type Rigid Metal Conduit (RMC)
Material Steel
Product Type Conduit Locknut
Brand NESCO
Category Conduit Fittings