Metallics Self-Drilling & Tapping Screw #12 x 1" 5/16 Indented Hex Head with Washer Steel Zinc #3 Drill Point

Metallics Industries Self-Drilling & Tapping Screw #12 x 1" 5/16 Indented Hex Head with Washer Steel Zinc #3 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 Drilling Performance

• #3 Drill Point Design - Engineered for efficient drilling through metal panels with 2.5 second drill time for 1mm thick plates, providing fast installation and reduced labor time
• 5/16 Indented Hex Head with Hex Drive - Professional hex drive system ensures secure tool engagement and optimal torque transfer for reliable installation
• Integrated Washer Construction - Built-in washer with 0.398-0.432 inch outer diameter and 0.022-0.039 inch thickness provides superior sealing and load distribution
• Steel Zinc Material with Rockwell C32-40 Hardness - High-strength steel construction with zinc finish delivers corrosion resistance and durability for demanding applications

Professional Installation Features

• Self-Drilling & Tapping Action - Eliminates need for pre-drilling, reducing installation time and improving productivity on job sites
• 14 Threads Per Inch - Precision threading per SAE J78-2013 standard ensures reliable engagement and holding power
• Panel Thickness Range 0.110-0.210 inches - Optimized for standard electrical panel and HVAC applications with consistent performance

Technical Specifications

Material: Steel Zinc per AISI 1016-1024 standard, Finish: Zinc coating, Fastener Length: 1 inch, Drill Point: #3 size, Drive Type: Hex, Fastener Head Type: 5/16 Indented Hex, Head Height: 0.139-0.155 inches, Head Width: 0.305-0.312 inches, Thread Per Inch: 14, Thread Standard: SAE J78-2013, Hardness: Rockwell C32-40, Torsional Strength: 92 lb-in minimum, Dimensional Standard: ASME B18.6.3-2010, Washer OD: 0.398-0.432 inches, Washer Thickness: 0.022-0.039 inches, Panel Thickness Range: 0.110-0.210 inches, Width Across Corners: 0.34 inches, Pack Type: Jar, Order Minimum: 100 pieces

Installation & Usage

1. Select appropriate hex driver bit for secure tool engagement with indented hex head
2. Position screw perpendicular to work surface ensuring proper alignment for drilling
3. Apply steady downward pressure while engaging drill to allow #3 drill point to penetrate material
4. Continue drilling until washer contacts panel surface for proper sealing
5. Complete installation by driving screw to specified torque without over-tightening
6. Verify secure fastening and proper washer compression for optimal performance

Professional Applications

Ideal for:

• Electrical Panel Installation - Securing electrical panels, junction boxes, and control cabinets with reliable fastening and sealing
• HVAC System Assembly - Mounting ductwork, air handling units, and ventilation components with corrosion-resistant fastening
• Plumbing Applications - Installing pipe supports, brackets, and plumbing fixtures requiring secure metal-to-metal fastening
• Industrial Equipment Mounting - Securing machinery components, control panels, and industrial hardware with high-strength fastening
• Construction Fastening - Metal building construction, structural connections, and architectural hardware installation
• Maintenance and Repair - Equipment servicing, panel replacement, and facility maintenance applications
• Commercial Installation - Office buildings, retail spaces, and commercial facilities requiring professional-grade fastening
• Telecommunications Equipment - Mounting communication panels, server racks, and electronic enclosures

Steel Zinc Construction Advantage

The steel zinc construction provides exceptional durability and corrosion resistance for electrical, plumbing, and HVAC applications. The zinc finish offers superior protection against environmental factors while maintaining the high strength characteristics of steel construction. The AISI 1016-1024 material standard ensures consistent quality and performance, while the Rockwell C32-40 hardness provides optimal drilling capability and thread engagement strength for professional installations.

Why Choose Metallics Industries Quality?

Metallics Industries' commitment to precision manufacturing ensures every self-drilling screw meets exacting standards for professional applications. Our quality materials and finishes, combined with reliable performance specifications, make these fasteners the trusted choice for contractors, electricians, and industrial professionals. Comprehensive product testing and adherence to industry standards like SAE J78-2013 and ASME B18.6.3-2010 guarantee consistent performance in electrical, plumbing, HVAC, and construction applications, delivering the dependable solutions professionals demand.