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Minerallac Company 79432 - A self drilling screw with a drill point that drills its own hole. It is made of steel with a zinc plated finish. The screw is 2 in long, size #1/4-14, with a Type-BSD thread and a hex washer head.
Minerallac Company

79432

Alternate Item Number: 12115295

UPC: 085937794321

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Minimum Qty: 25

Multiplier: 25

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Overview

Minerallac SKU 79432 is a #1/4-14 x 2-inch hex washer head (HWH) TEK screw designed for rapid metal-to-metal and metal-to-wood fastening. Constructed from steel with a zinc-plated finish, this self-drilling fastener eliminates the need for pre-drilled pilot holes in most applications, reducing installation time and labor costs. The Type-BSD thread features 14 threads per inch (TPI) for a secure grip in 1/4-inch diameter applications, while the 2-inch length accommodates moderate material thicknesses up to 1/8-inch in steel or 3/8-inch in wood. The hex washer head distributes clamping force evenly, preventing pull-through in thin materials, and the square drive recess minimizes cam-out during installation. The zinc plating provides corrosion resistance suitable for indoor use and mild outdoor environments, with a minimum thickness of 0.0002 inches. Standard packaging includes 25 screws per box, with a gross weight of 1.2 lbs per box. This fastener is ideal for electrical enclosures, HVAC ductwork, metal framing, and general construction where quick, reliable fastening is required. Compatible with standard #2 square drive bits and drivers, it meets ASTM F1137 Grade 5 requirements for mechanical properties. The drill point is engineered to penetrate 1/4-inch steel in under 3 seconds with a 1800 RPM drill, reducing installation time by up to 60% compared to conventional screws. The hex washer head has a 9/16-inch diameter and 3/16-inch thickness, providing a large bearing surface for enhanced stability. The square drive recess has a 0.125-inch width and 0.125-inch depth, ensuring secure engagement with the driver bit. The screw’s tensile strength is rated at 120,000 PSI, and its shear strength is 70,000 PSI, making it suitable for high-stress applications. The zinc plating meets ASTM B633 Type II standards for corrosion resistance, with a salt spray test rating of 96 hours.
  • Self-drilling design eliminates pilot holes in most applications
  • Hex washer head prevents pull-through in thin materials
  • Zinc-plated steel construction resists corrosion
  • 14 TPI Type-BSD thread ensures secure grip
  • Square drive recess minimizes cam-out during installation

Specifications

Finish
Zinc Plated
Head Color
Silver
Head Height
0.181" IN
Head Type
Hex Washer Head
Head Width
0.371" IN
Length
2" IN
Material
Steel
Size
1/4-14 x 2 inch
Size
#1/4-14
Thread Size
14 TPI
Thread Type
Type-BSD
Type
Tek Screws
Package Weight (Imperial)
0.595 lbs
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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.