Authorized Minerallac Company Distributor
Minerallac Company 86708 - This is a 12-stage step drill with a 2-flute split tip design. It is made of high speed steel and has a spiral groove. The drill is intended for steel, copper, brass, aluminum, Plexiglass, sheet metal, PVC, plasterboard, and hole enlarging applications.
Minerallac Company

86708

Alternate Item Number: 12116506

UPC: 085937867087


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Overview

The Minerallac 86708 is a 1/8" to 1/2" High Speed Steel (HSS) step drill bit designed for precise hole sizing in electrical and industrial applications. This 2-flute split tip bit efficiently penetrates materials and evacuates chips, reducing drilling time. The step design eliminates the need for multiple drill bits, allowing users to drill seven hole sizes (1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2") with a single tool. Manufactured in the USA by Minerallac, a trusted name in electrical and industrial hardware since 1923. Ideal for conduit, panels, and sheet metal work where clean, accurate holes are critical.
  • Drills 7 hole sizes (1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2") with a single bit
  • 2-flute split tip for efficient chip evacuation and material penetration
  • High Speed Steel (HSS) construction for durability and heat resistance
  • Manufactured in the USA by Minerallac Company
  • Ideal for electrical conduit, panels, and sheet metal applications

Specifications

Application
aluminum;brass;copper;hole enlarging;plasterboard;Plexiglass;PVC;sheet metal;Steel
Drill Diameter, Maximum
1/2 in
Drill Diameter, Minimum
1/8 in
Exchanging Centering Tip
No
Maximum Drill Diameter
1/2"
Minimum Drill Diameter
1/8"
Number of Blades
1
Number of Drill Stages
12
Special Features
Reduce secondary operations with trailing flute that automatically deburs holes.
Spiral Groove
True
Spiral Groove
Yes
Type
Step Drill
This is a step drill with a 2-flute split tip design. It is made for drilling or enlarging holes in steel, copper, brass, aluminum, Plexiglass, sheet metal, PVC, and plasterboard. The drill has 8 stages and a minimum drill diameter of 1/4" with a maximum drill diameter of 3/4".

86712

This is a step drill with a 2-flute split tip design. It is made for drilling or enlarging holes in steel, copper, brass, aluminum, Plexiglass, sheet metal, PVC, and plasterboard. The drill has 8 stages and a minimum drill diameter of 1/4" with a maximum drill diameter of 3/4".
This is a step drill with a 2-flute split tip design. It is made of high speed steel and is used for enlarging holes in steel, copper, brass, aluminum, Plexiglass, sheet metal, PVC, and plasterboard. The drill has a minimum diameter of 1/4 inch and a maximum diameter of 1-1/2 inch. It includes a spiral groove and a trailing flute that automatically deburs holes.

86724

This is a step drill with a 2-flute split tip design. It is made of high speed steel and is used for enlarging holes in steel, copper, brass, aluminum, Plexiglass, sheet metal, PVC, and plasterboard. The drill has a minimum diameter of 1/4 inch and a maximum diameter of 1-1/2 inch. It includes a spiral groove and a trailing flute that automatically deburs holes.
Multi Step Drill, 13 drill stages, 1/8 in. minimum drill diameter, 1/8 in. maximum sheet metal thickness, 1/2 in. maximum drill diameter, 1 per pack

SD12

Multi Step Drill, 13 drill stages, 1/8 in. minimum drill diameter, 1/8 in. maximum sheet metal thickness, 1/2 in. maximum drill diameter, 1 per pack
Multi Step Drill, 9 drill stages, 1/4 in. minimum drill diameter, 1/8 in. maximum sheet metal thickness, 3/4 in. maximum drill diameter, 1 per pack

SD34

Multi Step Drill, 9 drill stages, 1/4 in. minimum drill diameter, 1/8 in. maximum sheet metal thickness, 3/4 in. maximum drill diameter, 1 per pack
Multi Step Drill, 3 drill stages, 7/8 in. minimum drill diameter, 1/8 in. maximum sheet metal thickness, 1-1/8 in. maximum drill diameter, 1 per pack

SD78

Multi Step Drill, 3 drill stages, 7/8 in. minimum drill diameter, 1/8 in. maximum sheet metal thickness, 1-1/8 in. maximum drill diameter, 1 per pack
Multi Step Drill, 1/2, 3/4, 1-1/8 in. maximum drill diameter, 1/8, 1/4, 7/8 in. minimum drill diameter, 13, 9, 3 number of drill stages, 1 per pack

SDCP3

Multi Step Drill, 1/2, 3/4, 1-1/8 in. maximum drill diameter, 1/8, 1/4, 7/8 in. minimum drill diameter, 13, 9, 3 number of drill stages, 1 per pack
Step Drill, Carbon Steel M2 High Multi Step (2) 7/8" thru 1-1/8"

SD278118

Step Drill, Carbon Steel M2 High Multi Step (2) 7/8" thru 1-1/8"
Step Drill, Carbon Steel M2 High Multi Step (13) 1/8" thru 1/2"

SD131812

Step Drill, Carbon Steel M2 High Multi Step (13) 1/8" thru 1/2"

Frequently Asked Questions

What material is the drill bit made from?

The drill bit is made from High Speed Steel (HSS).

What is the manufacturer of this drill bit?

The drill bit is manufactured by Minerallac Company, a US-based company.

What hole sizes does this step drill bit create?

This bit drills seven sizes: 1/8", 3/16", 1/4", 5/16", 3/8", 7/16", and 1/2".

What is the shank type of this drill bit?

The drill bit has a straight shank design.

Is this drill bit suitable for sheet metal?

Yes, the 2-flute split tip is designed for efficient penetration in sheet metal and similar materials.

Frequently Asked Questions about Minerallac Company

What are the main product lines offered by Minerallac Company?

Minerallac Company offers multiple comprehensive product lines including Minerallac Traditional (electrical fasteners), Strut Fittings, Stainless Steel Fasteners, Black Claw, Impact Staples, and Redmore. Their Traditional line features over a thousand electrical fastener variations covering conduit/cable/wire products, nail straps, beam clamps, metal stud & drywall accessories, acoustical supports, voice/data hardware, and miscellaneous electrical installation components.

What is Minerallac Company's warranty policy?

Minerallac Company provides a limited warranty that guarantees all products are free from defects in material and workmanship. If a product fails to meet this warranty, Minerallac's sole liability is to replace the product at no charge. The warranty is exclusive and does not cover consequential damages, lost profits, or implied warranties of merchantability or fitness for a particular purpose.

What industries and applications are Minerallac Company products used for?

Minerallac Company products are used extensively across electrical, construction, and industrial applications, including conduit and cable support, beam mounting, metal stud and drywall installation, voice/data infrastructure, and low voltage systems. Their product lines cover critical fastening solutions for electrical contractors, with specialized offerings in conduit hangers, straps, beam clamps, cable supports, and mounting hardware for various industrial environments.

What technical support does Minerallac Company offer?

Minerallac Company offers comprehensive technical support through multiple channels, including a toll-free customer service line at 800-927-3293, email support at [email protected], and online resources at www.minerallac.com. Their support covers product selection, technical specifications, and customer service for their extensive line of electrical fasteners, hangers, straps, and hardware across multiple product brands including Minerallac Traditional, Cully, Black Claw, IMPACT Staples, and Minerallac Stainless Steel. Support hours are 8:00 A.M. to 5:00 P.M. CT for their corporate office and 8:00 A.M. to 5:00 P.M. PT for their regional office.

What are the key features of Minerallac Company products?

Minerallac Company products feature a comprehensive range of electrical fasteners and hardware with exceptional versatility, including over 1,000 different sizes, styles, and finishes. Key features include multiple product lines such as Traditional, Strut Fittings, and Stainless Steel options with specialized finishes like 304/316 Stainless Steel, Hot-Dipped Galvanized, and Zinc Electroplate. Their products are engineered for electrical contractors, offering time-saving solutions with high-quality fasteners designed for durability, corrosion resistance, and worker safety across various installation environments.

What environmental ratings do Minerallac Company products have?

Minerallac Company products have robust environmental ratings, including UL 508A Type 1, 2, 3, 4, 4X, 12, and 13 certifications, CSA Type 1-4X, 12, and 13 ratings, and IEC 60529 IP66 protection. The products are WEEE and RoHS compliant, with UV and oil resistance, and can operate in extreme temperatures ranging from -55°C to 105°C, making them suitable for harsh industrial environments.

What accessories are available for Minerallac Company products?

Minerallac Company offers a comprehensive range of accessories across multiple product categories, including hardware, fasteners, and mounting solutions. Key accessories include stove bolts with nuts, wing nut washers, bar joist washers, stud clip adapters, brackets, perforated strapping, cable support options like J-hooks and bridle rings, box mounting brackets, outlet retainers, and various stud and drywall supports. Their accessories are available in multiple finishes such as stainless steel, hot-dipped galvanized, zinc electroplate, and powder-coated options.

How are Minerallac Company products typically installed?

Minerallac Company products are typically installed using a variety of specialized fastening solutions, including conduit hangers, straps, beam clamps, and mounting brackets designed for different electrical and construction applications. Installation methods vary by product type, with options for metal studs, drywall, beams, acoustical surfaces, and low voltage systems. The company offers multiple installation styles such as one-hole and two-hole straps, universal beam clamps, and specific mounting hardware to ensure secure and efficient attachment across diverse electrical and construction environments.

What communication protocols do Minerallac Company products support?

Minerallac Company's Brad product line supports multiple industrial communication protocols, including Ethernet, DeviceNet, PROFIBUS, Modbus, CANopen, Serial, AS-interface, and CC-Link. Their comprehensive portfolio covers over 40 industrial protocols, providing flexible communication solutions for various industrial automation applications from PC-based control to PLC systems.