Authorized Minerallac Company Distributor
Minerallac Company 91928 - This is a 31/64" high speed jobber drill with a 135° point. It is made of steel with a black oxide finish and a split point. The drill has a 4-3/8" flute length, 5-7/8" overall length, and a 31/64" shank diameter.
Minerallac Company

91928

Alternate Item Number: 12117005

UPC: 085937919281


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Overview

The Minerallac Company 91928 is a 31/64 inch High-Speed Steel (HSS) Jobber Drill Bit featuring a 135° split point. Constructed from M7 industrial steel, this drill bit is engineered for efficient and accurate drilling in metal applications. The 135° split point design is a key feature, preventing bit wandering at the start of the hole and significantly reducing the need for pilot holes. This leads to improved accuracy and increased productivity on the job. The polished flute design facilitates rapid chip removal, which helps to maintain cutting efficiency and extend the life of the bit. Its black and bronze oxide surface treatment is applied to minimize friction and heat buildup during operation, further enhancing durability and performance. This drill bit is specifically recommended for drilling into stainless steel, high-carbon steels, and mild steel. Common applications include drilling metal studs, switch boxes, junction boxes, and lighting fixtures. Manufactured in the USA, the Minerallac 91928 offers reliable performance for professional use. SKU: 91928. UNSPSC: 31161600.
  • 31/64 inch size
  • High-Speed Steel (HSS) construction
  • 135° split point for reduced wandering and no pilot hole needed
  • M7 industrial steel for durability
  • Polished flute for efficient chip removal
  • Black and bronze oxide surface treatment for reduced friction
  • Ideal for stainless steel, high-carbon steel, and mild steel
  • Made in the USA

Specifications

Application
General Purpose
Drill Point
135°
Finish
Black Oxide
Flute Length
4-3/8" IN
Fractional Size
31/64" IN
Material
Steel
Material
M7 industrial steel
Number Of Pieces
1
Overall Length
5-7/8" IN
Point Type
Split Point
Shank Diameter
31/64" IN
Size
31/64"
Special Features
Features a polished flute for easy chip removal.
Type
Jobber Drill
Package Weight (Imperial)
1.146 lbs
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A 27/64" high speed jobber drill with a 135° split point. It is made of steel with a black oxide finish. The drill has a 3-15/16" flute length and a 5-3/8" overall length for general purpose drilling.
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91913

This is a 1/4" high speed jobber drill with a 135° split point. It is made of steel with a black oxide finish. The drill has a 2-3/4" flute length, 4" overall length, and 1/4" shank diameter for general purpose drilling.
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91926

A 29/64 in. high speed jobber drill with a 135° point. It is made of steel with a black oxide finish and a split point. The drill has a 4-3/16 in. flute length, 5-5/8 in. overall length, and a 29/64 in. shank diameter.
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91927

This is a jobber drill with a 15/32" fractional size and a 135° drill point. It is made of steel with a black oxide finish and has a split point. The flute length is 4-5/16" and the overall length is 5-3/4".
A high speed jobber drill with a 23/64" fractional size and 135° split point. It is made of steel with a black oxide finish. The drill has a 3-1/2" flute length, 4-7/8" overall length, and a 23/64" shank diameter for general purpose use.

91920

A high speed jobber drill with a 23/64" fractional size and 135° split point. It is made of steel with a black oxide finish. The drill has a 3-1/2" flute length, 4-7/8" overall length, and a 23/64" shank diameter for general purpose use.
A 5/16" high speed jobber drill with a 135° split point. It is made of steel with a black oxide finish. The drill has a 3-3/16" flute length, 4-1/2" overall length, and a 5/16" shank diameter.

91917

A 5/16" high speed jobber drill with a 135° split point. It is made of steel with a black oxide finish. The drill has a 3-3/16" flute length, 4-1/2" overall length, and a 5/16" shank diameter.
A 25/64" high speed jobber drill with a 135° split point. It is made of steel with a black oxide finish. The drill has a 3-3/4" flute length and a 5-1/8" overall length for general purpose use.

91922

A 25/64" high speed jobber drill with a 135° split point. It is made of steel with a black oxide finish. The drill has a 3-3/4" flute length and a 5-1/8" overall length for general purpose use.
11/64 in. high speed jobber drill with a 135° split point. It is made of steel with a black oxide finish. The drill has a 2-1/8 in. flute length, 11/64 in. shank diameter, and 3-1/4 in. overall length for general purpose drilling.

91908

11/64 in. high speed jobber drill with a 135° split point. It is made of steel with a black oxide finish. The drill has a 2-1/8 in. flute length, 11/64 in. shank diameter, and 3-1/4 in. overall length for general purpose drilling.

Frequently Asked Questions

What material is the Minerallac 91928 drill bit made from?

The Minerallac 91928 drill bit is constructed from M7 industrial steel.

What is the point angle of this Minerallac drill bit?

This Minerallac drill bit features a 135° split point.

What are the benefits of the split point design?

The 135° split point design prevents bit wandering and reduces the need for pilot holes, enhancing accuracy and productivity.

What types of metal can this drill bit be used on?

This drill bit is ideal for applications involving stainless steel, high-carbon steels, and mild steel.

Where is the Minerallac 91928 drill bit manufactured?

The Minerallac 91928 drill bit is made in the USA.

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.