Irwin 7/16″ 14 NC HCS Fractional Tap (8139)

Description

The Irwin 7/16″ 14 NC HCS Fractional Tap (8139) is a high-quality hand threading tool designed for general-purpose applications. Constructed from high carbon steel (HCS), this plug tap is ideal for both forming new threads and rethreading existing ones in a variety of materials. Its durable construction ensures strength and a long service life, making it a reliable choice for routine maintenance, repair work, and everyday projects. The tap features a 7/16″-14 NC (National Coarse) thread size, which is commonly used in various industrial and mechanical applications.

KEY FEATURES AND BENEFITS:

• Efficient Threading: The 7/16″-14 NC thread size and 4 straight flutes are designed for efficient chip removal, preventing material buildup and ensuring a clean thread every time.
• High Carbon Steel Construction: Made from high carbon steel, this tap offers a balance of strength and hardness, providing a dependable and long-lasting tool for your threading needs.
• Versatile Use: Ideal for a range of applications, including routine maintenance, repair jobs, and rethreading tasks. It’s a go-to tool for general-purpose projects where a high-tolerance fit is not the primary requirement.
• Easy Tool Identification: The tap is etched with its size and the recommended drill size, saving you time and effort when selecting the right tool for the job.
• Plug Tap Design: The plug tap’s moderate chamfer makes it suitable for threading through holes and for starting new threads, offering flexibility in different work scenarios.

SPECIFICATIONS:

• Model Number: 8139
• Thread Size: 7/16″-14 NC
• Material: High Carbon Steel (HCS)
• Tap Type: Plug Tap
• Thread Class: 2B
• Flutes: 4 Straight Flutes
• Thread Direction: Right-Hand
• System of Measurement: SAE (Imperial)

HOW TO USE:

1. Prepare the Hole: Ensure the hole is drilled to the correct size using the recommended drill bit. This ensures proper thread depth and strength.
2. Align the Tap: Place the tap in a tap wrench and align it perpendicular to the workpiece.
3. Start Threading: Begin turning the tap clockwise, applying gentle downward pressure.
4. Clear Chips: After every couple of turns, turn the tap a quarter turn counter-clockwise to break off and clear the chips. This prevents the tap from binding or breaking.
5. Continue Tapping: Continue the clockwise and counter-clockwise rotation until the desired thread depth is achieved.
6. Remove the Tap: Once the threading is complete, carefully turn the tap counter-clockwise to remove it from the workpiece.

BENEFITS OF USING IRWIN 7/16″ 14 NC HCS FRACTIONAL TAP (8139):

• Cost-Effective Solution: Provides a reliable threading solution for general projects without the premium cost of specialized tools.
• Dependable Performance: The high carbon steel construction ensures the tap maintains its sharpness and durability over time, even with regular use.
• Improved Efficiency: The straight flute design helps to clear chips quickly, leading to a faster and more efficient threading process.
• Wide Application Range: This tap is a versatile tool that can be used on various materials, making it a valuable addition to any toolkit for maintenance or repair tasks.
• User-Friendly Design: The easy-to-read etching and plug tap style make this tool simple to use for both experienced professionals and hobbyists.

FEATURES:

• Right-hand thread direction for standard applications.
• Plug tap design with a moderate 3 to 5 thread chamfer.
• Four-flute design for effective chip removal.
• Made from high carbon steel for longevity and strength.
• 2B thread class for general-purpose fit.
• Clear etching of tap size on the shank for quick reference.