Metallics Self-Drilling & Tapping Screw #8 x 3/4" Steel Zinc Indented Hex Head with Washer #2 Drill Point

Metallics Industries Self-Drilling & Tapping Screw #8 x 3/4" Steel Zinc Indented Hex Head with Washer #2 Drill Point

Professional Self-Drilling Fastener with Integrated Washer

The Metallics Industries Self-Drilling & Tapping Screw delivers exceptional performance and reliability for electrical, plumbing, heating and air conditioning applications. This steel zinc self-drilling fastener with integrated washer provides dependable fastening solutions designed for professional contractors, electricians, and industrial technicians, offering the proven quality and precision engineering that professionals trust from a leading manufacturer of electrical hardware and industrial fasteners.

Professional Features & Benefits

Advanced Self-Drilling Performance

• #2 Drill Point Design - Engineered drill point penetrates metal panels up to 0.100 inches thick with minimal torque requirements and 2.5 second drill time for 1mm plates
• Steel Zinc Construction - AISI 1016-1024 material standard provides superior strength and corrosion resistance with zinc finish for long-lasting performance
• Indented Hex Head with Hex Drive - 1/4" indented hex head design offers secure tool engagement and professional appearance with consistent torque transfer
• Integrated Washer System - Built-in washer (0.322-0.348" OD, 0.019-0.031" thickness) provides enhanced sealing and load distribution for reliable connections

Professional Installation Advantages

• Single-Step Installation - Self-drilling and tapping action eliminates pre-drilling requirements, reducing installation time and labor costs
• Consistent Threading - 18 threads per inch with SAE J78-2013 standard ensures reliable thread engagement and holding power
• Hardness Specification - Rockwell C32-40 hardness rating provides optimal balance of drilling capability and thread strength

Technical Specifications

Screw Size: #8 x 3/4" length; Material: Steel Zinc with AISI 1016-1024 standard; Finish: Zinc coating; Head Type: Indented Hex (0.244-0.25" width, 0.096-0.11" height); Drive Type: Hex; Drill Point: #2 size; Thread Specification: 18 threads per inch, SAE J78-2013 standard; Hardness: Rockwell C32-40; Torsional Strength: 42 lb-in minimum; Panel Thickness Range: 0.035-0.100 inches; Washer OD: 0.322-0.348 inches; Washer Thickness: 0.019-0.031 inches; Dimensional Standard: ASME B18.6.3-2010; Pack Type: Jar; Weight: 0.46 lbs

Installation & Usage

1. Select appropriate hex driver bit for secure engagement with indented hex head
2. Position screw perpendicular to work surface ensuring proper alignment
3. Apply steady downward pressure while engaging drill motor at moderate speed
4. Allow drill point to penetrate material completely before threading begins
5. Continue driving until washer contacts surface and screw is properly seated
6. Verify final torque does not exceed torsional strength rating of 42 lb-in minimum

Professional Applications

Ideal for:

• Electrical Panel Installation - Securing electrical panels, junction boxes, and conduit fittings to metal structures
• HVAC System Assembly - Fastening ductwork, equipment housings, and ventilation components
• Plumbing Applications - Mounting pipe supports, brackets, and plumbing fixtures to metal surfaces
• Metal Fabrication - Joining thin gauge metal sheets and components in fabrication projects
• Construction Fastening - Attaching metal framing, brackets, and hardware to structural elements
• Industrial Assembly - Securing equipment housings, covers, and access panels in industrial settings
• Building Maintenance - Repair and replacement applications requiring reliable metal-to-metal fastening
• Commercial Installation - Professional installations requiring consistent performance and appearance

Steel Zinc Construction Advantage

The steel zinc construction with AISI 1016-1024 material standard provides exceptional drilling capability while maintaining thread integrity. The zinc finish offers superior corrosion resistance for long-term performance in electrical, plumbing, and HVAC environments. The hardness specification of Rockwell C32-40 ensures optimal balance between drilling efficiency and fastener strength, while the integrated washer design eliminates the need for separate washers and provides consistent sealing performance.

Why Choose Metallics Industries Quality?

Metallics Industries demonstrates unwavering commitment to precision manufacturing and quality control excellence in electrical hardware and industrial fasteners. Our professional-grade materials and finishes ensure reliable performance for demanding applications, while comprehensive product testing and adherence to industry standards like SAE J78-2013 and ASME B18.6.3-2010 guarantee consistent results. Trusted by contractors, electricians, and industrial professionals nationwide, Metallics Industries provides superior engineering excellence and dependable hardware solutions for electrical, plumbing, HVAC, and construction applications where precision and reliability are essential.