Metallics Self-Drilling & Tapping Screw #8 x 1/2" Steel Zinc Indented Hex Head with Washer #2 Drill Point

Metallics Industries Self-Drilling & Tapping Screw #8 x 1/2" 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 - Eliminates pre-drilling requirements with efficient penetration through steel panels up to 0.100 inches thick, reducing installation time and labor costs
• Steel Zinc Construction - AISI 1016-1024 material standard provides superior strength and corrosion resistance for long-lasting performance in demanding environments
• Integrated Washer System - Built-in washer (0.322-0.348" OD, 0.019-0.031" thickness) distributes load evenly and prevents panel damage during installation
• Rockwell C32-40 Hardness - Precision heat treatment ensures optimal drilling performance while maintaining thread integrity for reliable fastening

Professional Installation Features

• Indented Hex Head Design - 1/4" hex drive provides secure tool engagement and high torque transfer for efficient installation with standard hex drivers
• 18 TPI Thread Pattern - SAE J78-2013 compliant threading ensures consistent engagement and holding power in thin gauge materials
• 42 lb-in Minimum Torsional Strength - Engineered to withstand installation torque and service loads without thread stripping or fastener failure

Quality Manufacturing Standards

• ASME B18.6.3-2010 Compliance - Meets dimensional standards for consistent fit and performance across applications
• Zinc Finish Protection - Provides corrosion resistance for extended service life in electrical and HVAC installations

Technical Specifications

Material: Steel Zinc (AISI 1016-1024), Finish: Zinc, Fastener Length: 1/2", Fastener Head Type: Indented Hex, Drive Type: Hex, Drill Point Size: #2, Thread Per Inch: 18, Thread Standard: SAE J78-2013, Hardness: Rockwell C32-40, Torsional Strength: 42 lb-in minimum, Fastener Head Height: 0.096-0.11", Fastener Head Width: 0.244-0.25", Panel Thickness Range: 0.035-0.100", Washer OD: 0.322-0.348", Washer Thickness: 0.019-0.031", Width Across Corners: 0.272", Dimensional Standard: ASME B18.6.3-2010, Pack Type: Jar, Weight: 0.37 lbs

Installation & Usage

1. Select appropriate hex driver bit (1/4" hex) and ensure proper tool engagement with indented hex head
2. Position screw perpendicular to work surface, ensuring panel thickness is within 0.035-0.100" range
3. Begin drilling at moderate speed, allowing #2 drill point to penetrate material without excessive pressure
4. Continue driving until washer contacts panel surface and screw threads fully engage substrate material
5. Apply final torque gradually, monitoring for proper thread engagement without over-tightening
6. Verify secure fastening and proper washer seating for optimal load distribution and weather sealing

Professional Applications

Ideal for:

• Electrical Panel Installation - Securing electrical panels, junction boxes, and conduit fittings to metal structures and building frames
• HVAC System Assembly - Fastening ductwork, equipment housings, and ventilation components in heating and cooling installations
• Plumbing Applications - Mounting pipe supports, fixture brackets, and plumbing hardware to metal substrates
• Metal Building Construction - Attaching siding panels, roofing materials, and structural components in commercial and industrial buildings
• Electrical Equipment Mounting - Securing transformers, switchgear, and electrical enclosures to metal mounting surfaces
• Industrial Assembly - Fastening components in manufacturing equipment, machinery housings, and industrial control panels
• Commercial Construction - Installing architectural hardware, building systems, and structural elements in commercial projects
• Maintenance and Repair - Replacement fastening for existing installations requiring reliable self-drilling performance

Steel Zinc Construction Advantage

The steel zinc construction provides exceptional strength-to-weight ratio with superior corrosion resistance for electrical and HVAC applications. The AISI 1016-1024 material standard ensures consistent mechanical properties, while the zinc finish offers long-term protection against environmental exposure. The precision heat treatment to Rockwell C32-40 hardness optimizes drilling performance while maintaining thread integrity for reliable fastening in thin gauge materials.

Why Choose Metallics Industries Quality?

Metallics Industries' commitment to precision manufacturing ensures every self-drilling screw meets exacting quality standards for professional applications. Our comprehensive testing and quality control processes guarantee reliable performance for contractors and industrial professionals. With specialized expertise in electrical hardware and industrial fastening solutions, Metallics Industries provides trusted solutions for electrical, plumbing, HVAC, and construction applications, backed by superior material selection, precision threading, and dependable performance standards that professionals rely on for critical installations.