Irwin 15pc Cobalt HSS Fractional Straight Shank Jobber Length (316015)

The Irwin 15pc Cobalt HSS Fractional Straight Shank Jobber Length (316015) is a premium collection of bits engineered for professional use in challenging materials. This set is crafted from M-42/M-35 Cobalt High-Speed Steel, a material chosen for its exceptional properties. The cobalt content enhances the bits' resistance to heat and abrasion, which is critical when drilling into tough, high-tensile materials like stainless steel, cast iron, and hardened steel. The 135-degree split point tip is a standout feature, designed to eliminate the need for a pilot hole and prevent the bit from "walking" or slipping on the surface. This ensures clean, accurate starts and reduces the force required for drilling. The bits are jobber length, a standard for general-purpose drilling, and come in a wide range of fractional sizes from 1/16" to 3/8". The entire set is housed in a sturdy, impact-resistant case, ensuring your tools are protected and organized. The clear size markings and secure latch make finding and storing the right bit simple and efficient. This Irwin set is a reliable choice for anyone needing precision and longevity from their drilling tools.

KEY FEATURES AND BENEFITS:

• Material composition: M-42/M-35 Cobalt High-Speed Steel offers superior heat and abrasion resistance.
• Precision tip: 135-degree split point ensures accurate starts without walking or slipping.
• Shank design: Straight shank with some larger bits featuring a three-flatted shank for improved grip.
• Comprehensive size range: Includes common fractional sizes from 1/16" to 3/8".
• Durable storage case: Molded ABS plastic with rubber over-mold protects and organizes the bits.

SPECIFICATIONS:

• Material: M-42/M-35 Cobalt High-Speed Steel
• Point Angle: 135-degree split point
• Shank Type: Straight shank
• Length: Jobber length
• Standards: NAS 907, Type J
• Included in shipment: 15-piece drill bit set in an impact-resistant storage case, including sizes 1/16" (x2), 5/64", 3/32" (x2), 7/64", 1/8" (x2), 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8"

HOW TO USE:

1. Select the correct bit: Identify the size you need from the markings on the storage case and select the corresponding drill bit.
2. Secure the bit: Insert the drill bit into your drill's chuck and tighten it securely. Ensure the three-flatted shank (if applicable) is properly seated to prevent slippage.
3. Prepare the material: Secure your workpiece firmly. Use a center punch if you need to be very precise. The 135-degree tip minimizes walking and often removes the need for a pilot hole.
4. Drill with the right speed: Start at a slow speed and apply steady pressure. Use lubricant or coolant, especially on hardened metals.
5. Maintain and clean: Clean the bit after use and return it to its slot in the case to avoid damage and maintain organization.

BENEFITS OF USING THE IRWIN 15PC COBALT HSS FRACTIONAL STRAIGHT SHANK JOBBER LENGTH (316015):

• Performs exceptionally in materials like stainless steel, titanium, and cast iron.
• Cobalt construction resists heat and wear for longer tool life.
• Split point tip minimizes walking, improving accuracy and reducing effort.
• Fractional size range provides versatility for most drilling tasks.
• Impact-resistant case keeps bits protected and organized for efficiency.
• Reliable, long-lasting set ideal for professionals demanding precision.

FEATURES:

• Made from premium M-42/M-35 Cobalt steel for durability and heat resistance.
• 135-degree tip starts drilling without walking or needing a pilot hole.
• Straight shank fits most standard drill chucks securely.
• Three-flatted shank on larger bits improves grip in keyless chucks.
• Includes 15 fractional sizes from 1/16" to 3/8".
• Conforms to NAS 907, Type J industry standards.
• Durable ABS plastic storage case with secure sliding latch.
• Case includes clear markings for quick bit selection.