Irwin 3018002 29 Piece Cobalt Drill Bit Set M35 Alloy Steel Metal Index 135 Degree Split Point Heavy Duty Industrial Steel Iron Drilling Drill Bits

Irwin 3018002 29 Piece Cobalt Drill Bit Set M35 Alloy Steel Metal Index 135 Degree Split Point Heavy Duty Industrial Steel Iron Drilling Drill BitsMAXIMUM HEAT RESISTANCE Industrial 29 Piece M35 Cobalt Alloy Steel Drill Bit Set with 135 Degree No Walk Split Points Conquer the most challenging metalworking applications and abrasive structural materials with the extreme durability of the Irwin 29 Piece Cobalt Alloy Steel M35 Metal Index Drill Bit Set (3018002). Engineered explicitly for professional aerospace machinists, automotive fabricators, industrial millwrights, and commercial HVAC

MAXIMUM HEAT RESISTANCE – Industrial 29-Piece M35 Cobalt Alloy Steel Drill Bit Set with 135-Degree No-Walk Split Points

Conquer the most challenging metalworking applications and abrasive structural materials with the extreme durability of the Irwin 29-Piece Cobalt Alloy Steel M35 Metal Index Drill Bit Set (3018002). Engineered explicitly for professional aerospace machinists, automotive fabricators, industrial millwrights, and commercial HVAC mechanical technicians, this master-tier drill bit kit is designed to perform where standard high-speed steel (HSS) bits fail. Forged from premium M35 Cobalt Alloy Steel, these bits are highly heat- and wear-resistant, allowing them to maintain structural sharpness under intense thermal stress. This makes them the ultimate field choice for drilling through notoriously hard, abrasive metals such as hardened stainless steel, high-alloy steel titanium sheets, heavy truck frames, and thick cast iron valves.

Every drill bit in this comprehensive industrial tool kit is structurally optimized to maximize productivity and ensure absolute accuracy. Outfitted with precision-ground 135-degree split points, each bit initiates chips immediately upon contact, completely eliminating frustrating surface walking and ensuring clean, rapid starts without center punching. The set contains a full fractional range from 1/16-inch up to 1/2-inch in exact 1/64-inch increments for flawless workshop coverage. To ensure maximum accessory compatibility across your entire tool inventory, bits larger than 3/8-inch feature a 3/8-inch reduced shank, allowing you to run these large bits in standard hand drills and compact drill press chucks. Housed in a heavy-duty metal index storage case armored with a shock-absorbing rubberized outer shell, complete with removable easy-access bit cartridges and an integrated tap and die selection reference chart, this lifetime-warranted set is built to withstand rigorous industrial abuse.

Key Features

• Premium M35 Cobalt Core: Infused with heavy-duty M35 cobalt alloy steel to withstand extreme friction temperatures and maintain a sharp cutting edge in tough metals.
• 135-Degree Precision Split Point: Eliminates drill bit walking across smooth workpieces, starting fast and clean with less downward pressure.
• Complete 29-Piece Fractional Range: Supplies an exhaustive assortment from 1/16 in. up to 1/2 in. in fine 1/64 in. step increments for precise hole dimensioning.
• Universal 3/8-Inch Reduced Shanks: Bits larger than 3/8-inch are engineered with scaled-down shanks to easily fit standard 3/8-inch chuck hand drills and drill presses.
• Armored Metal Storage Index: Heavy-duty metal indexing case features a shock-absorbing protective rubber shell and removable cartridges to protect bits on the jobsite.
• Tap and Die Reference Chart: Integrated sizing graphics are pre-printed inside the storage case for rapid tap-drill pair matching and layout verification.
• Industrial Strength Applications: The ideal drill bit assortment for boring clean holes into high-alloy steel, stainless steel plate, cast iron blocks, and titanium.

What's Included

• 29 × Irwin M35 Cobalt Alloy Steel Drill Bits (1/16 in. to 1/2 in. in 1/64 in. Increments)
• 1 × Heavy-Duty Metal Storage Index Case with Protective Rubber Shell
• 2 × Removable Quick-Access Twist Drill Bit Cartridges
• 1 × Integrated Tap, Die, and Drill Bit Selection Reference Chart

Specifications

💡 PRO-TIP: Unlike standard high-speed steel bits that require high-speed spinning, M35 Cobalt alloy steel tools perform best at lower rotational speeds (RPM) combined with heavy, consistent feed pressure! When boring deep holes into hard alloy metal or thick stainless steel plate, always run your drill on its lower speed gear and deploy a dedicated high-grade cutting fluid or lubrication oil. Keeping the RPM low and the bit constantly cutting—rather than spinning loosely over the metal surface—completely prevents the workpiece from work-hardening, preserves your split-point sharpness, and keeps your industrial bits cutting like new!