Minerallac 91601 High Speed St...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
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Minerallac 91601 High Speed Steel Jobber Drill Bit, 1/16", 118° Point

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Model: 91601

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

$1.79
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Minerallac 91601 High Speed Steel Jobber Drill Bit, 1/16", 118° Point

The Minerallac 91601 is a 1/16" high speed jobber drill bit built from steel with a standard 118° point, designed for electricians and installers who need a dependable bit for panel enclosures, boxes, brackets, and general metal drilling tasks on the job. Its jobber-length profile and high speed steel construction make it a practical addition to any electrical toolkit or truck stock, offering the durability required for repeated drilling in steel and other common jobsite materials.

Key Features

  • Trade Size: 1/16" diameter for precise, small-hole drilling applications.
  • Durable Construction: High speed steel (HS) construction for heat resistance and extended tool life during repeated use.
  • Point Angle: 118° point, a standard general-purpose grind suited for drilling steel, aluminum, and other common electrical enclosure materials.
  • Jobber-Length Profile: Standard jobber drill length provides versatility for a wide range of drilling depths on typical electrical installation tasks.
  • Professional-Grade Steel Bit: Engineered for electricians, panel builders, and installers requiring a reliable drill bit for enclosure and bracket work.

Technical Specifications

  • Drill Bit Diameter: 1/16"
  • Point Angle: 118°
  • Material: High Speed Steel
  • Drill Type: Jobber

Typical Applications

  • Drilling Steel Electrical Enclosures and Panels
  • Fabricating Mounting Holes in Brackets and Hardware
  • General Metal Drilling on Electrical Installation Jobs
  • Panel Builder and Custom Enclosure Fabrication
  • Truck Stock and Toolkit Replenishment for Electricians

Why Minerallac?

Minerallac supplies the steel drill bits and hand tools that electricians rely on to complete precise, repeatable drilling tasks in the field. The 91601's high speed steel construction and 118° point deliver the durability and consistent performance professionals expect for panel, bracket, and enclosure work.

Manufacturer Resources

Product Specs

list_batch:
MIN-20260924
Product Type:
Twist Drill Bit
Angle:
118°
Configuration:
Jobber
Department:
Electrical
Product Subgroup:
Drill & Driver Bits
Product Material:
High Speed Steel
Product Size:
1/16"
Product Group:
Power Tools & Accessories
Country of Origin:
Taiwan
Product Finish:
Two Tone

Minerallac 91601 – Frequently Asked Questions

1) Will a 1/16 inch Minerallac 91601 drill bit cut through a steel electrical enclosure?
Yes. The 91601 is high speed steel with a 118 degree point, which is the general purpose grind for steel and aluminum, and it is sold for drilling panel enclosures, boxes and brackets. At 1/16 inch it is a pilot and small-hole bit, so for anything larger you step up after starting the hole.
2) Will the Minerallac 91601 drill concrete or masonry for anchors?
No - the 91601 is a high speed steel jobber bit with a 118 degree general-purpose grind for steel, aluminum, and similar enclosure materials. Concrete and block call for a rotary hammer bit such as the Milwaukee 48-20-3956, a 1 inch SDS-Max MX4 4-cutter bit, which needs an SDS-Max tool rather than a standard drill chuck. Keep the 91601 for metal work and spec the SDS-Max bit for anchor holes in masonry.
3) What does jobber length mean on the Minerallac 91601, and does it fit a standard drill chuck?
Jobber is the standard-length twist drill, the length most drill sets use, and the 91601 is a jobber configuration in 1/16 inch. The shank is the same 1/16 inch straight shank, so it chucks in any keyless or keyed chuck that closes down that small. It is not an SDS or hex impact bit.
4) What part number do I order for the 1/16 inch Minerallac jobber bit?
Order Minerallac 91601. That number is the 1/16 inch size, and 1/16 inch is the only size offered under it, so there is no size suffix to specify. Country of origin is Taiwan.
5) Is a 1/16 inch bit the right size for pilot holes in sheet metal brackets?
It works well as a pilot. At 1/16 inch the 91601 starts a hole accurately in bracket stock and enclosure sheet, which is what keeps a larger bit from walking. Small-diameter HSS bits snap easily under side load, so run it straight, keep the speed up and the feed light, and buy them a few at a time for truck stock.
6) I need a larger hole than 1/16 inch in a panel enclosure - what should I order instead of the 91601?
The Minerallac 91601 only drills 1/16 inch, which suits pilot holes and small bracket holes. For a bigger hole in sheet steel, the Milwaukee 48-89-2729 is a 23/64 inch black oxide-coated bit in the THUNDERBOLT series. Order the 91601 for the pilot and the 23/64 inch bit when the finished hole has to clear a larger fastener.
7) Is the Minerallac 91601 coated, or is it bare steel?
It carries a two tone finish on the high speed steel body. That is a surface finish only, not a titanium or black oxide coating, so treat cutting speed and lubrication as you would any bare HSS bit in steel. If you specifically want black oxide, the Milwaukee THUNDERBOLT line is black oxide coated.
How fast can I get the Minerallac 91601 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 Minerallac 91601 come with a warranty?
Absolutely. The Minerallac 91601 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 Minerallac 91601?
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 Minerallac 91601 from ZenSupply?
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