Value Collection WPFI0-400500-100B No.4 Flat Head Screw

Product Description

The VALUE COLLECTION WPFI0-400500-100B is a No. 4 flat head Phillips sheet metal screw designed for fastening thin metal panels, brackets, ductwork, and electrical enclosures. Manufactured from steel with a zinc finish for corrosion resistance, this screw measures 0.5 inches in length under the head. The flat head profile sits flush with the surface when driven, making it well suited for applications where a low-profile fastener is required. Sold in a minimum quantity of 100 pieces per order, this screw is a standard consumable for HVAC fabrication, electrical work, and light sheet metal assembly.

This screw is commonly used in residential and light commercial trade work where No. 4 sheet metal fasteners are called for. Typical applications include securing HVAC duct components, attaching sheet metal panels to frames, fastening junction box covers, and assembling light-gauge metal assemblies. The Phillips drive is compatible with standard power drivers and manual screwdrivers, keeping it accessible across a wide range of job-site conditions.

Key Features

• No. 4 thread size suits standard light-gauge sheet metal applications
• Flat head design seats flush with the work surface for a clean, low-profile finish
• Phillips drive accommodates common power drivers and hand tools
• Steel construction with zinc finish provides baseline corrosion resistance
• 0.5-inch length under head fits thin panel and enclosure fastening tasks
• Sold in packs of 100 for efficient job-site replenishment

Compatibility

Designed as a standard No. 4 flat head Phillips sheet metal screw suitable for light-gauge steel panels, HVAC duct components, electrical enclosures, and similar sheet metal assemblies requiring a flush-mount fastener.

Installation Notes

Installation is performed by HVAC technicians, electricians, and sheet metal workers using a Phillips-head screwdriver or compatible power driver bit. Pre-drilling a pilot hole is recommended when driving into heavier-gauge stock to prevent material distortion. Follow applicable NEC or mechanical code requirements when fastening electrical enclosures or duct assemblies. Do not overtighten, as stripping threads in light-gauge material will compromise holding strength.