Irwin 8-40 NS Bottom Bulk HCS Machine Screw Tap (1226ZR)

The Irwin 8-40 NS Bottom Bulk HCS Machine Screw Tap (1226ZR) is a specialized tool engineered for precision threading. This tap is made from high-carbon steel and is designed for creating or cleaning internal threads in a variety of materials. Its unique bottoming tap style allows it to cut threads as deep as possible within a blind hole, making it a crucial tool for specific repair and maintenance tasks. The tap's four straight flutes are specifically ground to ensure rapid and efficient chip removal, which results in a cleaner and more precise threading process. The product is suitable for routine maintenance, repair, and rethreading tasks where a high-accuracy, high-tolerance thread is not the primary requirement. This tap produces a general-purpose Class 2B thread.

KEY FEATURES AND BENEFITS:

• High Carbon Steel (HCS) Construction: Crafted from high-carbon steel, this tap offers a balance of hardness and toughness, providing resistance to wear during threading operations.
• Bottoming Tap Style: The bottoming tap design has a minimal chamfer, allowing the tap to create threads very close to the bottom of a blind hole, a task that other tap styles cannot perform effectively.
• Efficient Chip Removal: Equipped with four straight flutes, the tap is engineered to clear chips quickly during the threading process. This prevents clogging and ensures a smoother, more efficient operation.
• Versatile Application: Suitable for hand-threading in a wide variety of materials, including aluminum, steel, and other alloys.
• General-Purpose Threading: Designed to produce a Class 2B thread, perfect for routine maintenance and repair work where a standard, general-purpose fit is acceptable and does not require critical accuracy.

SPECIFICATIONS:

• Product Type: Machine Screw Tap
• Thread Size: #8-40 NS (National Special)
• Thread Class: 2B
• Tap Style: Bottoming
• Material: High Carbon Steel (HCS)
• Cutting Direction: Right-hand
• Flutes: 4

HOW TO USE:

1. Prepare the Hole: Ensure the hole is the correct size for a #8-40 tap. The hole should be clean, free of debris, and have a clear path for the tap to enter. A blind hole should have sufficient depth to accommodate the length of the tap and any chips.
2. Apply Lubricant: Apply a suitable cutting fluid or tapping oil to both the tap and the hole to reduce friction, prevent overheating, and improve thread quality.
3. Position the Tap: Insert the tap into the hole, ensuring it is perfectly straight and aligned with the hole's axis. A tap handle is recommended for accuracy.
4. Begin Threading: Apply light, even pressure and turn the tap clockwise (for right-hand threads), turning a half-turn to one full turn at a time.
5. Clear Chips: After each half or full turn, rotate the tap a quarter-turn counterclockwise to break and clear chips, preventing binding or breakage.
6. Continue and Finish: Repeat the forward and reverse motion until the tap reaches the desired depth. For bottoming taps, this is until the tap bottoms out in the hole. Unscrew carefully after completion.

BENEFITS OF USING IRWIN 8-40 NS BOTTOM BULK HCS MACHINE SCREW TAP (1226ZR):

• Enables the creation of threads as deep as possible in blind holes, where other taps may not reach effectively.
• High-carbon steel composition provides durability and wear resistance.
• Four straight flutes ensure efficient chip removal for smoother threading.
• Produces a Class 2B thread suitable for a variety of general-purpose applications.
• Bulk packaging offers cost efficiency for frequent users.

FEATURES:

• Designed to create precise threads deep within blind holes.
• Four straight flutes promote quick and effective chip clearance.
• Constructed from high-carbon steel for long-lasting performance.
• Ideal for hand-threading operations in multiple material types.
• Provides a consistent general-purpose Class 2B thread fit.
• Right-hand cutting direction for standard threading operations.
• Convenient bulk pack for high-volume use.