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Minerallac Company 91921D - This is a 3/8 inch 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 3-5/8 inch flute length, 5 inch overall length, and a 3/8 inch shank diameter. It is intended for general purpose use.
Minerallac Company

91921D

Alternate Item Number: 12324109

UPC: 085937940940


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Overview

The Minerallac Company 3/8" High Speed Jobber Split Point Drill Bit (SKU 91921D) is a precision-engineered metalworking tool designed for accurate hole drilling in various metals. Manufactured from high-speed tool steel in the USA, this drill features a 135° split point for precise hole starting and reduced wandering. The polished flute design ensures efficient chip removal, enhancing cut quality and extending tool life. Ideal for general-purpose metal drilling applications, this drill is part of Minerallac's professional-grade line of drilling tools. Suitable for use in fabrication, maintenance, and construction environments where durability and accuracy are critical. This 3/8" drill bit is constructed from durable high-speed tool steel, ensuring longevity and performance in demanding applications. Its 135° split point geometry is specifically engineered to prevent "walking" on the workpiece surface, allowing for accurate hole placement without the need for a center punch in many materials. The polished flute design facilitates rapid chip evacuation, which is crucial for maintaining cutting efficiency, preventing overheating, and extending the overall service life of the drill bit. Minerallac's commitment to quality is reflected in its USA manufacturing, guaranteeing a reliable tool for professional use.
  • 3/8" High-Speed Steel (HSS) Jobber Drill Bit
  • 135° Split Point for accurate starting and reduced wandering
  • Polished flute for efficient chip removal and extended tool life
  • Manufactured in the USA for professional-grade quality
  • Ideal for general-purpose metal drilling applications

Specifications

Application
General Purpose
Drill Point
135°
Finish
Black Oxide
Flute Length
3-5/8" IN
Fractional Size
3/8" IN
Material
Steel
Material
High-speed tool steel
Number Of Pieces
1
Overall Length
5" IN
Point Type
Split Point
Shank Diameter
3/8" IN
Size
3/8"
Special Features
Features a polished flute for easy chip removal.
Type
Jobber Drill
Package Weight (Imperial)
0.098 lbs
This is a 3/16" high speed jobber drill with a 135° split point. It is made of steel with a black oxide finish. The drill has a 2-5/16" flute length, 3/16" shank diameter, and 3-1/2" overall length for general purpose use.

91909

This is a 3/16" high speed jobber drill with a 135° split point. It is made of steel with a black oxide finish. The drill has a 2-5/16" flute length, 3/16" shank diameter, and 3-1/2" overall length for general purpose use.
A 17/64" high speed jobber drill with a 135° split point. It is made of steel with a black oxide finish. The drill has a 2-7/8" flute length and an overall length of 4-1/8". It is intended for general purpose use.

91914D

A 17/64" high speed jobber drill with a 135° split point. It is made of steel with a black oxide finish. The drill has a 2-7/8" flute length and an overall length of 4-1/8". It is intended for general purpose use.
This is a 3/32" 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 1-1/4" flute length, 2-1/4" overall length, and a 3/32" shank diameter.

91903D

This is a 3/32" 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 1-1/4" flute length, 2-1/4" overall length, and a 3/32" shank diameter.
A 5/64 in high speed jobber drill bit with a 118° drill point. It is made of steel with a two-tone finish and a straight shank. The drill has a 1 in flute length and 2 in overall length.

91602D

A 5/64 in high speed jobber drill bit with a 118° drill point. It is made of steel with a two-tone finish and a straight shank. The drill has a 1 in flute length and 2 in overall length.
This is a 1/4 inch 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 inch flute length, 4 inch overall length, and 1/4 inch shank diameter for general purpose use.

91913D

This is a 1/4 inch 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 inch flute length, 4 inch overall length, and 1/4 inch shank diameter for general purpose use.
A high speed jobber drill bit with a 118° standard point and straight shank. It is made of steel with a two-tone finish and a polished flute for easier chip removal. The drill has a 1/4" fractional size, 2-3/4" flute length, and 4" overall length.

91613D

A high speed jobber drill bit with a 118° standard point and straight shank. It is made of steel with a two-tone finish and a polished flute for easier chip removal. The drill has a 1/4" fractional size, 2-3/4" flute length, and 4" overall length.
5/32 in. high speed jobber drill with a 135° point. It is made of steel with a black oxide finish. The drill has a split point, 2 in. flute length, 5/32 in. shank diameter, and 3-1/8 in. overall length.

91907D

5/32 in. high speed jobber drill with a 135° point. It is made of steel with a black oxide finish. The drill has a split point, 2 in. flute length, 5/32 in. shank diameter, and 3-1/8 in. overall length.
A 15/64" high speed jobber drill with a 135° point. It is made of steel with a black oxide finish and has a split point. The drill has a 2-5/8" flute length, 3-7/8" overall length, and a 15/64" shank diameter.

91912D

A 15/64" high speed jobber drill with a 135° point. It is made of steel with a black oxide finish and has a split point. The drill has a 2-5/8" flute length, 3-7/8" overall length, and a 15/64" shank diameter.

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.