Value Collection 1429 Hex Washer Head Sheet Metal Screw M4.2

Product Description

The VALUE COLLECTION 1429 is a hex washer head sheet metal screw designed for fastening sheet metal and light-gauge materials in HVAC, electrical, and general mechanical applications. The M4.2 metric thread size pairs with a Type AB point, which combines a coarse-pitch thread start with a sharp self-tapping tip for fast, reliable engagement in thin metal without pre-drilling in many applications. Drive type is external hex, allowing installation with a standard nut driver or hex-drive bit. The phosphate finish provides baseline corrosion resistance and paint adhesion suitable for indoor and sheltered installations. Sold in a pack of 50.

This screw is commonly used in sheet metal assemblies including HVAC ductwork, electrical enclosures, junction boxes, and equipment panels. The hex washer head distributes clamping load across the material surface, reducing the risk of pull-through in thin-gauge sheet stock. The Type AB point makes it suitable for both sheet metal and soft metals without pilot holes in most cases. Licensed HVAC technicians, electricians, and mechanical installers will find this fastener a standard field-replacement and new-installation option for M4.2 metric applications.

Key Features

• M4.2 metric thread size for consistent engagement in light-gauge sheet metal
• Type AB point for self-tapping capability in thin metal
• Hex washer head provides broad clamping surface and easy drive access
• External hex drive compatible with standard nut drivers and hex-drive power tools
• Phosphate finish for corrosion resistance in indoor and sheltered environments
• Pack of 50 units for field stocking and service van inventory

Compatibility

Designed as a general-purpose M4.2 Type AB sheet metal screw suitable for use in standard sheet metal fastening applications including HVAC ductwork, electrical enclosures, and equipment panels where an M4.2 hex washer head fastener is specified.

Installation Notes

Installation is performed by HVAC technicians, electricians, or general mechanical tradespeople using a nut driver or hex-drive bit matched to the external hex head size. De-energize electrical equipment and shut down HVAC systems before fastening panels or enclosures. Type AB self-tapping screws should be driven at controlled speed to avoid stripping thin-gauge material. Follow applicable NEC or IFGC requirements for equipment enclosure fastening where code compliance is required.