8139 Fractional Tap, 7/16-14 NC, Plug Tap, HCS

The Irwin 8139 is a 7/16-14 NC fractional plug tap made from high carbon steel (HCS), designed for hand threading applications across a variety of materials. This tap is ideal for routine maintenance, repair work, and rethreading tasks where high accuracy and tight tolerance threads are not critical. It restores damaged or worn threads quickly and efficiently, making it an essential tool for any workshop or tool kit.

The robust carbon steel construction guarantees durability through frequent use and repeated rethreading jobs. Whether you're performing routine maintenance on machinery, repairing worn fastener holes, or restoring threads in various materials, this fractional tap delivers reliable performance for manual threading work.

Features and Benefits

• Four Straight Flutes: Ground to provide rapid chip removal for efficient threading.
• High Carbon Steel (HCS) Body: Durable construction withstands repeated rethreading and manual threading applications without premature wear.
• Class 2B Thread Production: Creates reliable, functional threads suitable for maintenance and repair work where precision is not critical.
• Plug Tap Design: Ideal for hand threading in pre-drilled holes, making it perfect for routine workshop tasks.
• Manual Threading Capability: Designed specifically for hand-operated threading work, eliminating the need for powered equipment.

Specifications

• Brand: Irwin
• Model: 8139
• Thread Size: 7/16-14 NC (National Coarse)
• Tap Type: Plug Tap
• Material: High Carbon Steel (HCS)
• Flutes: 4 straight flutes
• Thread Class: 2B
• Recommended Drill Bit: Letter U or 11/32 inch