Minerallac 91613D 1/4" High Sp...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$10.09
Minerallac 91613D 1/4" High Speed Jobber Drill, 118° Point, Steel

Minerallac 91613D 1/4" High Speed Jobber Drill, 118° Point, Steel

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Model: 91613D

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

$10.09
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Minerallac 5/16" High Speed Steel Jobber Drill Bit with 118� Point and Polished Flute

Professional High Speed Steel Drilling Solution

The Minerallac 5/16" High Speed Steel Jobber Drill delivers reliable drilling performance with its 118� point design and steel construction. This general purpose drill bit features a polished flute for easy chip removal, making it ideal for professional applications requiring precise drilling capabilities.

Professional Features & Benefits

  • 5/16" Diameter: Provides precise hole sizing for standard fastener and hardware applications
  • 118� Point Angle: Delivers optimal cutting geometry for general purpose drilling in various materials
  • High Speed Steel Construction: Ensures durability and heat resistance for extended tool life
  • Polished Flute Design: Facilitates smooth chip removal and reduces binding during drilling operations
  • Jobber Length: Offers versatile reach and stability for most drilling applications
  • Bright Finish: Provides corrosion resistance and easy identification in tool storage

Technical Specifications

  • Country Of Origin: China
  • Drill Point: 118�
  • Flute Length: 3/3/16
  • Fractional Size: 16-May
  • Number Of Pieces: 1
  • Overall Length: 4/1/02
  • Point Type: Standard
  • Product Finish: Bright
  • Product Material: Steel
  • Product Type: Jobber Drill
  • Shank Diameter: 16-May

Installation & Operation

  1. Mount the drill bit securely in a compatible chuck, ensuring proper alignment and tight grip.
  2. Select appropriate drilling speed based on material type and drill bit diameter specifications.
  3. Apply steady, controlled pressure while maintaining perpendicular alignment to the work surface.
  4. Allow the polished flute design to facilitate chip removal during the drilling process.
  5. Withdraw the bit periodically to clear chips and prevent overheating during extended use.
  6. Store properly after use to maintain the bright finish and cutting edge integrity.

Professional Applications

  • General construction and fabrication projects
  • Maintenance and repair operations
  • Metal working and machining applications
  • Electrical and plumbing installations
  • Automotive and mechanical repairs
  • Industrial manufacturing processes

Why Choose Minerallac Quality?

Minerallac delivers dependable drilling solutions with high speed steel construction and professional-grade manufacturing. The bright finish and polished flute design demonstrate attention to quality details that enhance performance and tool longevity in demanding applications.

Manufacturer Resources

Product Specs

Department:
Electrical
Product Type:
Twist Drill Bit
Product Subgroup:
Drill & Driver Bits
Product Group:
Power Tools & Accessories

Minerallac 91613D – Frequently Asked Questions

1) What sizes does the Minerallac high speed steel jobber drill bit come in?
Three diameters: 1/4 inch (part 91613D), 5/16 inch (91617D), and 3/8 inch (91621D). Each is sold as a single bit, not a set, so order the diameter you need by its part number.
2) Will a 3/8 inch Minerallac jobber bit fit a standard 3/8 inch drill chuck?
The shank on a jobber drill matches the bit diameter, so the 3/8 inch size (91621D) needs a chuck that opens to a full 3/8 inch. A 3/8 inch keyless chuck will take it only right at its limit; the 1/4 inch (91613D) and 5/16 inch (91617D) sizes seat with room to spare in the same chuck.
3) Is a 118 degree point drill bit the right choice for drilling steel strut and enclosures?
Yes. The 118 degree standard point is the general purpose geometry for mild steel, aluminum, and wood, which covers most electrical work like drilling strut, panel knockout cleanup, and bracket fabrication. For hardened or stainless stock a 135 degree split point self-centers better and resists walking; the 118 degree point will want a center punch mark to start cleanly.
4) Are these bright finish HSS bits okay for drilling metal, or do I need black oxide or cobalt?
Bright finish high speed steel handles mild steel, aluminum, brass, and wood, which is what most MRO and electrical drilling is. Bright HSS cuts aluminum and other soft metals cleanly because chips do not weld to a polished flute. For repeated drilling in stainless or hardened steel, step up to cobalt instead.
5) Which size Minerallac jobber bit do I need for a 3/8 inch anchor or bolt clearance hole?
Use the 3/8 inch bit (91621D) for a nominal line-to-line hole on a 3/8 inch fastener; if you want clearance for a 5/16 inch bolt, the 3/8 inch bit gives it. The 1/4 inch (91613D) suits 1/4-20 hardware clearance at line-to-line, and 5/16 inch (91617D) sits between the two.
6) What is the difference between a jobber length bit and a shorter screw machine bit?
Jobber length is the common general purpose length, long enough to reach through framing, strut, and boxed assemblies. Screw machine (stub) bits are shorter and stiffer, so they wander less and break less in tight overhead or in-panel work. These Minerallac bits are jobber length, so pick them when reach matters more than rigidity.
How fast can I get the Minerallac 91613D 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 91613D come with a warranty?
Absolutely. The Minerallac 91613D 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 91613D?
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 91613D 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.
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