Irwin Letter J x 4-1/8″ HSS Letter Size Straight Drill Bit (40110)

Description

The Irwin Letter J x 4-1/8″ HSS Letter Size Straight Drill Bit (40110) is a high-performance tool engineered for superior accuracy and reliability. Crafted from premium high-speed steel, this bit is designed to handle demanding applications in metal, wood, and plastic. Its innovative 135° split-point tip is a standout feature, enabling the bit to start drilling instantly upon contact and completely eliminating bit “walking” for a clean, precise hole every time. With a standard jobber length and a straight shank, this bit is compatible with a wide range of drilling equipment, including portable drills and stationary drill presses. It is particularly well-suited for creating the exact-sized holes required for tapping applications, making it an essential tool for automotive, maintenance, and general repair work. The bright finish and robust construction ensure a long service life, providing consistent performance for all your drilling needs.

KEY FEATURES AND BENEFITS:

• 135° Split-Point Tip: This advanced tip design ensures the bit starts drilling immediately on contact, preventing it from wandering or “walking” across the surface. This results in highly accurate and clean hole placement.
• Premium High-Speed Steel (HSS): Constructed from high-quality M-2 HSS, this bit offers excellent hardness and heat resistance. It maintains a sharp edge longer and can withstand the rigors of drilling tough materials, providing a long-lasting and efficient tool.
• Ideal for Tapping Applications: The bit is specifically designed to drill a precisely sized hole, which is critical for successful tapping. This ensures the correct thread formation and a strong, secure fit for bolts and screws.
• Versatile Straight Shank: The straight shank design allows for universal use in both portable drills for on-the-go jobs and stationary drill presses for more controlled and repetitive work, offering flexibility in how you use the tool.

SPECIFICATIONS:

• Size: Letter J
• Decimal Equivalent: 0.277 inches
• Overall Length: 4-1/8 inches
• Shank Type: Straight
• Point Angle: 135°
• Material: High-Speed Steel (HSS)
• Finish: Bright

HOW TO USE:

1. Prepare Your Equipment: Ensure your drill press or portable drill is in good working condition. Secure the Irwin Letter J drill bit firmly into the chuck.
2. Mark the Drilling Location: Clearly mark the precise spot where you need to drill the hole. The bit’s split-point tip will help prevent it from moving, but a marked spot ensures perfect placement.
3. Secure the Workpiece: Use a clamp or vise to securely hold the material you are drilling. This prevents the workpiece from shifting and ensures a clean, safe drilling operation.
4. Start Drilling: Begin drilling at a moderate speed, applying steady, even pressure. The 135° split-point tip will start the hole on contact without needing a pilot hole.
5. Clear Debris: Periodically pull the bit back from the hole to clear out chips and debris, especially when drilling deep. This prevents the flutes from clogging and keeps the bit from overheating.

BENEFITS OF USING IRWIN LETTER J X 4-1/8″ HSS LETTER SIZE STRAIGHT DRILL BIT (40110):

• Achieves exceptionally clean and precise holes without any preliminary walking.
• Reduces the need for a separate pilot hole, saving time and effort.
• Ensures perfectly sized holes for tapping applications, leading to stronger, more reliable threads.
• Extends the tool’s life through its high-speed steel construction, which resists heat and wear.
• Offers broad compatibility with a variety of drilling tools, from handheld to stationary equipment.
• Provides a straightforward and efficient solution for automotive, repair, and maintenance tasks.

FEATURES:

• Split-point tip at 135° for instant and accurate drilling
• Constructed from durable M-2 high-speed steel
• Bright finish helps prevent corrosion and improves visibility
• Straight shank fits most standard chucks
• Precision design supports accurate tapping operations
• Jobber length (4-1/8″) offers balance for general use
• Compatible with both portable drills and drill presses
• Effective on wood, plastic, and metal surfaces
• No pilot hole needed due to anti-walk tip
• Optimized for automotive, maintenance, and general repair use