#4 X 40 National Coarse Thread Machine Screw Tap – Hand Threading Tool

Presenting the #4 x 40 National Coarse Thread Machine Screw Tap, a rugged carbon steel tool built for hand threading and everyday maintenance. Its simple straight-flute geometry promotes fast chip evacuation, keeping threads clean as you work. This dependable tapping solution is ideal for rethreading worn holes and tackling repair tasks where precision tolerances aren't critical. A versatile addition to any workshop, it delivers consistent results across a range of metals and projects.

Benefits for maintenance and repairs: By providing clean, properly formed threads, this tap minimizes the risk of cross-threads and stripped fasteners. Whether you're a professional technician or a weekend hobbyist, you'll appreciate smoother hand threading and reliable performance on tough jobs.

• Carbon steel construction delivers a durable machine screw tap for repeated hand threading sessions.
• National coarse thread size #4 x 40 aligns with common machine screw tapping needs and rethreading tasks.
• Straight flutes engineered for rapid chip removal, keeping threads clean and speeding up manual threading.
• Class 2B thread production yields a standard fit ideal for repairs and regular maintenance.
• Hand threading compatibility with hole-prep guidance (pilot hole #43 or 5/64 in) to ensure accurate threads.

Final thoughts: This NC-thread machine screw tap stands out for durability, efficiency, and ease of use in manual threading tasks. It supports reliable repairs, accurate rethreading, and long service life across metalworking projects. Whether you're maintaining equipment or rebuilding fastened joints, this tool helps you complete jobs with confidence. Keep it in your toolbox for fast, interference-free threading whenever the moment calls.