Vargus 54380 Threading Insert 0.375 in 3XER 28 Tpi Carbide

Product Description

The VARGUS 54380 is a solid carbide threading insert designed for external thread cutting on UN-standard threads. Built in the 3XER style with a 0.375-inch inscribed circle, this insert delivers consistent 28 TPI thread profiles with a 60-degree included angle. The VKX micrograin carbide grade combined with a PVD coating process provides wear resistance and edge stability during threading operations on steel and similar materials. Right-hand cutting geometry makes it a direct fit for standard external threading tool holders. Licensed machinists and toolroom technicians typically select this insert for precision UN thread production on CNC lathes and manual turning centers.

The 54380 is suited for external threading applications where UN thread standards per ANSI B1.1:74 are required. Its 28 TPI pitch covers common fastener and fitting thread sizes in the 3/8-inch range. The PVD-coated micrograin carbide construction supports consistent thread form across production runs in ferrous and non-ferrous materials. This insert is sized for use in compatible 3XER-style threading tool holders and is a single-piece, right-hand configuration.

Key Features

• 3XER insert style with 0.375-inch (3/8-inch) inscribed circle
• 28 TPI external UN thread profile, 60-degree included angle
• VKX micrograin solid carbide grade for edge stability and wear resistance
• PVD coating process for extended tool life in threading operations
• Right-hand cutting geometry, compliant with ANSI B1.1:74
• Coated finish on solid carbide substrate for thermal and abrasion resistance

Compatibility

Designed as an OEM-style threading insert for use in 3XER-style external threading tool holders requiring a 0.375-inch inscribed circle and 28 TPI UN thread geometry.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Power down and lock out the machine before seating or replacing inserts. Use the appropriate torx or insert-clamping wrench specified by the tool holder manufacturer to secure the insert without over-tightening. Verify thread pitch and insert orientation against the job setup sheet before resuming cuts.