Irwin 3016005 5/64" x 2" Cobal...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1.35
Irwin 3016005 5/64" x 2" Cobalt Alloy Steel Jobber Drill Bit

Irwin 3016005 5/64" x 2" Cobalt Alloy Steel Jobber Drill Bit

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Model: 3016005

In Stock (leaves warehouse same day if ordered before 3pm ET)

$1.35
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Irwin 3016132 1/2" Cobalt Alloy Steel Jobber Drill Bit, 135° Split Point

The Irwin 3016132 is a 1/2" Cobalt Alloy Steel jobber length drill bit engineered for drilling into hardened steel, alloys, Titanium Nitride coated materials, and stainless steel. Constructed from 5% cobalt alloy steel with heavy duty web construction, this bit delivers higher heat and abrasion resistance for demanding metalworking applications. A 135° split point minimizes walk for accurate hole starts, and the Gold Oxide coating helps reduce friction during drilling. With a 1/2" shank diameter and 0.5 in bit diameter, this Irwin drill bit is sold as an individual unit, not part of a set.

Key Features

  • Trade Size: 1/2" shank diameter and 0.5 in bit diameter sized for jobber-length drilling applications.
  • Durable Construction: 5% Cobalt Alloy Steel with heavy duty web construction for strength, durability, and higher heat and abrasion resistance.
  • 135° Split Point: Minimizes walk and allows the bit to start cleanly on contact for precise hole placement.
  • Gold Oxide Coating: Helps reduce friction and heat buildup during drilling.
  • Jobber Bit Type: Sold as an individual bit rather than part of a set, suited for general-purpose drilling depth.
  • Metal Construction: Rated for drilling hardened steel, alloys, Titanium Nitride coated materials, and stainless steel.

Technical Specifications

  • Bit Type: Jobber
  • Shank Diameter: 1/2 in
  • Bit Diameter: 0.5 in
  • Size: 1/2 in
  • Individual Vs. Set: Individual
  • Product Material Group: Metal
  • Product Primary Material: Cobalt Alloy Steel
  • Coating: Gold Oxide
  • Power Source: Non-Energy Using
  • Country of Origin: China
  • Warranty: None
  • Claims Needed: No
  • Battery Included: No

Typical Applications

  • Drilling Hardened Steel and Steel Alloys
  • Drilling Titanium Nitride Coated Materials
  • Drilling Stainless Steel
  • Metalworking and Fabrication
  • Industrial Maintenance and Repair

Why Irwin?

Irwin builds this cobalt alloy steel drill bit with heavy duty web construction to stand up to the heat and abrasion generated when drilling hardened steel, alloys, and stainless steel. The 135° split point and Gold Oxide coating work together to reduce walk and friction, helping professionals achieve accurate, clean holes in tough materials. Choose Irwin for dependable cobalt alloy performance in demanding metalworking environments.

Manufacturer Resources

Product Specs

Product Type:
Twist Drill Bit
Product Finish:
Gold Oxide
list_batch:
IRW-20260923
Product Material:
Cobalt Alloy Steel
Department:
Electrical
Product Subgroup:
Drill & Driver Bits
Product Width:
1.9 inches
Product Group:
Power Tools & Accessories
Battery Included:
No
Coating:
Gold Oxide
Product Material Group:
METAL
Individual Vs. Set (Syndigo):
INDIVIDUAL
Claims Needed:
No
Power Source:
NON-ENERGY USING
Product Primary Material:
Cobalt Alloy Steel

Irwin 3016005 – Frequently Asked Questions

1) Will an Irwin 3016 cobalt jobber bit drill hardened and stainless steel?
That is what it is built for. The 3016 series cobalt jobber bit is made from 5% cobalt alloy steel with heavy duty web construction, which raises heat and abrasion resistance for hardened steel, steel alloys, Titanium Nitride coated materials and stainless. For mild steel or wood a standard HSS bit will do the job; the cobalt is worth paying for when the material work-hardens or the bit is running hot.
2) Does a 135 degree split point bit need a center punch first?
Generally no. The 135 degree split point on the Irwin 3016 cobalt bit starts cutting on contact and minimizes walk, so it tracks on flat metal without a punch mark in most cases. On a curved or sloped surface, punch it anyway.
3) Is jobber length the right drill bit for shop metalwork, or do I need a screw machine bit?
Jobber length is the general-purpose choice and that is what the Irwin 3016 is. It gives useful depth for plate, box and bracket work. If you are drilling in tight quarters or want less flex and more accuracy in hard stainless, a shorter screw machine (stub) length bit is the better tool; go jobber when you need the reach.
4) What does the gold oxide coating on this Irwin cobalt bit actually do?
Gold oxide is a friction-reducing surface treatment, not a hardness coating. It helps the chips clear and cuts heat buildup in the flutes. The cutting performance in tough alloys comes from the cobalt steel body underneath, which is why the bit can be resharpened without losing its core properties.
5) Where are Irwin 3016 cobalt drill bits made?
Country of origin is China. Worth knowing if you are filling a government or institutional order with domestic-content requirements on consumable tooling.
How fast can I get the Irwin 3016005 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Irwin 3016005 come with a warranty?
Absolutely. The Irwin 3016005 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Irwin 3016005?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Irwin 3016005 from ZenSupply?
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