Metallics Machine Screw 3/8-16 x 1" Round Head Combo Steel Zinc

Metallics Industries Machine Screw 3/8-16 x 1" Round Head Combo Steel Zinc

Professional Dual-Drive Fastener Solution

The Metallics Industries Machine Screw 3/8-16 x 1" Round Head Combo delivers exceptional performance and reliability for electrical, plumbing, and HVAC applications. This steel zinc machine screw 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. Featuring Metallics' innovative combo drive design with both slotted and Phillips drives in one head, this fastener provides installation flexibility and convenience for demanding professional applications.

Professional Features & Benefits

Dual-Drive Performance

• Combo Drive Design - Features both slotted and Phillips drives in one round head for maximum installation flexibility and tool compatibility
• 3/8-16 Thread Specification - Precision 16 threads per inch provide secure fastening with excellent holding power for professional applications
• 1-Inch Length - Optimal fastener length for standard electrical panel, equipment mounting, and industrial assembly applications
• Round Head Profile - Professional round head design with 0.67-0.708 inch width provides secure clamping force and finished appearance

Material & Construction Excellence

• Steel Zinc Construction - AISI 1006-1022 steel with zinc finish provides excellent corrosion resistance and durability for indoor and outdoor applications
• Professional Hardness Rating - Rockwell B70-B100 hardness ensures reliable performance under demanding installation conditions
• 60,000 PSI Minimum Tensile Strength - High-strength construction delivers dependable holding power for critical fastening applications

Installation Versatility

• Dual Tool Compatibility - Works with both slotted and Phillips drivers, providing installation flexibility in tight spaces or when specific tools are unavailable
• Precision Threading - Machine thread design ensures smooth installation and secure engagement with threaded holes and nuts

Technical Specifications

Thread Size: 3/8-16, Length: 1 inch, Material: Steel Zinc (AISI 1006-1022), Finish: Zinc, Drive Type: Slotted/Phillips Combo, Head Type: Round, Head Width: 0.67-0.708 inches, Head Height: 0.237-0.256 inches, Driver Size: #4, Hardness: Rockwell B70-B100, Tensile Strength: 60,000 PSI minimum, Phillips Recess Depth: 0.202-0.228 inches, Phillips Recess Diameter: 0.374-0.387 inches, Slot Depth: 0.117-0.155 inches, Slot Width: 0.081-0.094 inches, Pack Type: Jar, Weight: 4.03 lbs

Installation & Usage

1. Select appropriate pre-drilled or threaded hole matching 3/8-16 thread specification
2. Choose either slotted or Phillips driver based on available tools and access requirements
3. Insert machine screw through mounting hole and align with threaded receptacle or nut
4. Begin threading by hand to ensure proper thread engagement and prevent cross-threading
5. Tighten using appropriate driver, applying consistent torque for secure fastening without over-tightening
6. Verify proper seating of round head against mounting surface for optimal clamping force

Professional Applications

Ideal for:

• Electrical Panel Assembly - Secure mounting of electrical components, breakers, and control devices in panel boxes and enclosures
• Equipment Mounting - Professional installation of motors, pumps, and industrial equipment requiring reliable fastening solutions
• HVAC System Installation - Mounting of heating and air conditioning components, ductwork brackets, and system controls
• Plumbing Applications - Secure fastening of pipe supports, valve assemblies, and plumbing fixture mounting hardware
• Industrial Assembly - Machine assembly, equipment fabrication, and industrial maintenance applications requiring precision fasteners
• Control Panel Construction - Assembly of electrical control panels, junction boxes, and instrumentation enclosures
• Maintenance and Repair - Replacement fasteners for electrical, plumbing, and HVAC system maintenance and repair work
• Commercial Construction - Professional fastening solutions for commercial building electrical and mechanical systems

Steel Zinc Construction Advantage

Metallics' steel zinc construction provides superior corrosion resistance and durability for demanding professional applications. The AISI 1006-1022 steel base material offers excellent strength and reliability, while the zinc finish provides enhanced protection against moisture and environmental conditions. This combination ensures long-lasting performance in electrical, plumbing, and HVAC installations where reliability is critical.

Why Choose Metallics Industries Quality?

Metallics Industries has been the trusted leader in precision fastener manufacturing since 1985, when they became the first fastener company in America to offer a complete line of combo drive screws. Their commitment to precision manufacturing, quality materials and finishes, and reliable performance makes them the preferred choice for contractors and industrial professionals. With comprehensive product testing, superior material selection, and engineering excellence, Metallics Industries provides trusted solutions for electrical, plumbing, HVAC, and construction applications where performance and reliability are essential.