Minerallac 1/4-20 x 1-1/4" Round Head Machine Screws with Phillips/Slotted Combo Drive, Zinc Plated Steel

Minerallac 1/4-20 x 1-1/4" Round Head Machine Screws with Phillips/Slotted Combo Drive, Zinc Plated Steel

Professional Grade Fastening Solutions for Versatile Applications

Minerallac delivers reliable fastening performance with these precision-engineered 1/4-20 x 1-1/4" round head machine screws. Constructed from durable steel with zinc plated finish for corrosion resistance, these screws feature a convenient Phillips/slotted combo drive design for versatile installation options. Designed for use in pre-tapped holes or with nuts, these professional-grade fasteners provide secure connections across a wide range of electrical and mechanical applications.

Professional Features & Benefits

• 1/4-20 Thread Size: Standard threading ensures compatibility with common nuts and pre-tapped holes for reliable mechanical connections.
• 1-1/4" Length: Optimal length provides sufficient engagement for secure fastening in various material thicknesses.
• Phillips/Slotted Combo Drive: Dual drive system offers installation flexibility with either Phillips or flathead screwdrivers for enhanced convenience.
• Zinc Plated Steel Construction: Durable steel base material with protective zinc coating delivers strength and corrosion resistance for long-term performance.
• Round Head Design: Low-profile round head configuration provides clean appearance while distributing load effectively across fastened surfaces.
• 2A External Thread Classification: Precision threading meets industry standards for proper fit and reliable engagement with mating components.

Technical Specifications

• Country Of Origin: Taiwan
• Drive Type: Phillips/Slotted Combo
• Driver Size: #3
• Head Color: Silver
• Head Diameter: 0.472
• Head Height: 0.175
• Head Type: Round Head
• Product Finish: Zinc Plated
• Product Length: 1-1/4 in
• Product Material: Steel
• Product Size: 1/4"-20
• Product Type: Machine Screw
• Thread Size: 20
• Thread Type: 2A External Threads

Installation & Operation

1. Mount the unit in a suitable location with appropriate clearance and access for connections and service.
2. Connect utility and load conductors following applicable guidelines and the manufacturer's instructions.
3. Wire generator or power input according to the provided voltage/phase specifications and compatible capacity.
4. Configure any available load management or control features as supported by the provided specifications.
5. Test automatic transfer or operational functionality and verify proper performance before placing into service.
6. Complete final inspection and follow ongoing maintenance practices appropriate to the product category.

Professional Applications

• Electrical Panel Assembly and Component Mounting
• HVAC Equipment Installation and Service
• Industrial Machinery and Equipment Fastening
• Commercial Building Maintenance and Repair
• Telecommunications and Data Center Infrastructure
• General Mechanical Assembly Applications

Why Choose Minerallac Quality?

Minerallac machine screws deliver consistent performance and reliability through precision manufacturing and quality materials. The zinc plated finish provides enhanced corrosion protection for extended service life, while the combo drive design ensures installation versatility across diverse professional applications.