Eagle Cutting Tool CHD-1228-I 12-28 Nf Carbon Hex Die

Product Description

The EAGLE CUTTING TOOL CHD-1228-I is a carbon steel hex rethreading die sized for 12-28 NF (National Fine) threads. It is used to restore or clean damaged external threads on fasteners, bolts, and threaded rod. The hexagonal outer profile allows standard open-end wrenches, adjustable wrenches, and die stocks to drive the tool. Designed for use on steel and other ferrous materials, this die is a practical shop or field solution for thread restoration without full thread replacement. Machinists, maintenance mechanics, and general tradespeople are the primary users.

This die is suited for repair work in mechanical maintenance environments where 12-28 NF threaded fasteners have been damaged by corrosion, cross-threading, or impact. The 12-28 NF specification covers a No. 12 nominal diameter with 28 threads per inch, a fine-pitch designation common in automotive, instrumentation, and light mechanical assemblies. It is appropriate for both shop bench work and field repair applications.

Key Features

• 12-28 NF thread specification for fine-pitch external thread restoration
• Hexagonal outer profile accepts standard open-end or adjustable wrenches
• Carbon steel construction suitable for use on ferrous fasteners and threaded rod
• Rethreading geometry designed to chase and restore damaged threads
• Minimum order quantity of 1 unit

Compatibility

Designed as an OEM-style replacement hex rethreading die for 12-28 NF external thread applications in general mechanical maintenance and repair.

Installation Notes

Thread restoration dies should be installed and operated by qualified machinists or maintenance mechanics familiar with threading tools. Ensure the fastener or rod is secured before applying the die. Use appropriate cutting fluid on ferrous materials to extend die life and produce a cleaner thread. Inspect the die for wear or chipping before each use to avoid further thread damage.

Technical Specifications

• Thread Size: 12-28 NF
• Thread Standard: National Fine (NF)
• Drive Style: Hex (hexagonal outer profile)
• Material: Carbon Steel
• Weight: 1.96 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: CHD-1228-I