Minerallac #7 High Speed Steel...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$55.13
$5.13
Minerallac #7 High Speed Steel Jobber Drill Bit with 118� Point and Black Oxide Finish

Minerallac #7 High Speed Steel Jobber Drill Bit with 118� Point and Black Oxide Finish

(No reviews yet) Write a Review

Model: 91707D

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

$55.13
$5.13
Adding to cart… The item has been added
Free Shipping on orders over $199.99
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Minerallac #7 High Speed Steel Jobber Drill Bit with 118� Point and Black Oxide Finish

Professional All-Purpose Drilling Solution for Multiple Materials

The Minerallac #7 High Speed Steel Jobber Drill Bit delivers reliable performance with its 118� point design and black oxide finish. This wire gauge length drill bit features a straight shank construction and roll forged manufacturing for durability across wood, aluminum, and mild steel applications. With its 0.2010" diameter and 3-5/8" overall length, this general purpose drill bit provides the extended reach characteristic of jobber-style bits.

Professional Features & Benefits

  • High Speed Steel Construction: Provides superior durability and heat resistance for extended tool life in demanding drilling applications.
  • 118� Point Angle: Delivers optimal penetration and chip evacuation for clean, precise holes across multiple material types.
  • Black Oxide Finish: Reduces friction and heat buildup while providing corrosion resistance for consistent performance.
  • Roll Forged Manufacturing: Ensures uniform grain structure and enhanced strength throughout the drill bit body.
  • Wire Gauge #7 Size (0.2010"): Provides precise diameter control for accurate hole sizing in electrical and general applications.
  • Multi-Material Compatibility: Works effectively in wood, aluminum, and mild steel for versatile workshop and jobsite use.
  • Straight Shank Design: Ensures secure chuck grip and reliable power transmission during drilling operations.

Technical Specifications

  • Country Of Origin: United States
  • Features: Wire Gauge Length, 118 Degree Point, General Purpose Drill Bit, Roll Forged, Straight Shank, Black
  • Flute: 2-7/16" in
  • Material Usage: Works Great in Wood, Aluminum, Mild Steel
  • Overall Length: 3-5/8" in
  • Product Finish: Black Oxide Finish
  • Product Size: #7 Wire Gauge (0.2010" in)
  • Product Type: High Speed Steel Jobber Drill Bit

Installation & Operation

  1. Mount the drill bit securely in the chuck, ensuring proper alignment and tight grip on the straight shank.
  2. Select appropriate drilling speed based on material type and drill bit diameter specifications.
  3. Position the workpiece securely and mark the drilling location for accurate hole placement.
  4. Apply steady, controlled pressure while drilling, allowing the 118� point to penetrate smoothly.
  5. Clear chips regularly during deep drilling operations to maintain cutting efficiency and prevent overheating.
  6. Complete the drilling operation and allow the bit to cool before storage or subsequent use.

Professional Applications

  • Electrical Installation and Wiring Projects
  • General Manufacturing and Fabrication
  • Woodworking and Carpentry Operations
  • Automotive and Equipment Maintenance
  • HVAC Installation and Service
  • Metal Fabrication and Assembly
  • Maintenance and Repair Operations

Why Choose Minerallac Quality?

Minerallac delivers professional-grade drilling solutions with American manufacturing quality and roll forged construction. The black oxide finish and high speed steel composition ensure reliable performance and extended tool life, making this jobber drill bit a dependable choice for demanding applications across multiple materials.

Manufacturer Resources

Product Specs

Country Of Origin:
United States
Flute:
2-7/16" in
Material Usage:
Works Great in Wood, Aluminum, Mild Steel
Overall Length:
3-5/8" in
Product Finish:
Black Oxide Finish
Wire Size:
#7 Wire Gauge (0.2010" in)
Product Type:
Twist Drill Bit
Department:
Tools
Product Subgroup:
Drill & Driver Bits
Product Group:
Power Tools & Accessories

Minerallac 91707D – Frequently Asked Questions

1) What size hole does a #7 wire gauge drill bit make, and is it the right bit for tapping 1/4-20 threads?
The Minerallac 91707D drills 0.2010 inches, which is the #7 wire gauge size. That is the standard tap drill diameter for a 1/4-20 UNC thread, so it is the bit you reach for when you are tapping 1/4-20 in mild steel or aluminum. If you want a clearance hole for a 1/4 inch screw rather than a tapped hole, you need a larger bit, not this one.
2) How deep a hole can this jobber drill bit actually cut?
Useful depth is set by the flute length, which is 2-7/16 inches on this #7 Minerallac bit. Overall length is 3-5/8 inches, with the balance taken up by the straight shank in the chuck. Anything deeper than roughly 2-7/16 inches needs an extension or a longer aircraft-length bit, because past the flutes there is nowhere for chips to clear.
3) Will a black oxide HSS bit drill stainless or hardened steel?
No. This bit is rated for wood, aluminum, and mild steel. Stainless, hardened steel, and masonry are outside what it is built for, and a 118 degree HSS point will dull fast or burn in them. For stainless you want a cobalt bit with a 135 degree split point; for concrete or block, a carbide-tipped masonry bit.
4) Is a 118 degree point or a 135 degree split point better for the work I'm doing?
A 118 degree point like the one on this Minerallac #7 bit is the general purpose grind: it cuts cleanly in wood, aluminum, and mild steel and clears chips well. It is not self-centering, so on a flat metal surface you should center punch first or it will walk. A 135 degree split point self-starts and is the choice for harder alloys and unpunched sheet metal.
5) Is this Minerallac drill bit made in the USA for a Buy American job?
Country of origin on the 91707D is the United States. That matters on federally funded and public institutional work where domestic sourcing is part of the spec, and it is one of the few consumable bit lines where the origin is stated.
6) Is the black oxide coating going to keep the bit from rusting in a jobsite drill case?
The black oxide finish gives surface corrosion resistance and cuts friction and heat buildup, which helps in a damp truck box or gang box. It is a thin conversion coating, not plating, so it will wear off the cutting edges with use. Wiping the bit down after drilling steel is still worth doing.
7) What is the exact part number to reorder this #7 jobber bit?
Order Minerallac part number 91707D. That is a single configuration, #7 wire gauge at 0.2010 inches, 118 degree point, black oxide, so there is no finish or length option to specify with it.
How fast can I get the Minerallac 91707D 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 91707D come with a warranty?
Absolutely. The Minerallac 91707D 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 91707D?
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 91707D from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!