Irwin Hanson 9427 5/16"-18 NC High Carbon Steel Hexagon Machine Screw Die

The Irwin Hanson 9427 is a 5/16"-18 NC (National Coarse) Hexagon Machine Screw Die made from high carbon steel, designed for cutting and restoring external threads on bolts, studs, and other fasteners by hand. With a 1" across-the-flat hexagon profile, this die is compatible with standard hexagon die stocks and can also be driven with a common wrench or socket — ideal for maintenance and repair work in tight or confined spaces where a round die stock won't fit.

Advanced die geometry delivers faster cutting action and extended tool life, while the hardened high carbon steel construction provides the durability and wear resistance needed for reliable, accurate thread cutting. The die size is etched directly onto the tool for quick, easy identification in the shop or field.

Key Features:

• Thread Size: 5/16"-18 NC (National Coarse), right-hand thread
• Hex Size: 1" across the flats — fits standard hexagon die stocks
• Material: High carbon steel (HCS) for strength, hardness, and long service life
• Advanced Die Geometry: Engineered for faster cutting with reduced wear
• Versatile Drive Options: Use with a hexagon die stock, or with a standard wrench or socket in limited-access areas
• Etched Markings: Die size permanently etched on the tool for easy identification
• Packaging: Sold individually, carded
• Best Suited For: Maintenance, repair, and restoration of external threads

The Irwin Hanson 9427 is a practical, shop-proven threading die that belongs in any mechanic's, machinist's, or maintenance professional's toolbox. UPC: 042526094279.