Disston Company 198427 Phillips Screwdriver Bit 4 in

Product Description

The DISSTON COMPANY 198427 is a No. 1 Phillips screwdriver bit designed for power drivers and drill/drivers used in trade and maintenance work. At 4 inches in length, this bit reaches fasteners in deep cavities, recessed channels, and tight spaces where standard-length bits cannot seat properly. The extended shank gives technicians and installers the clearance needed to drive screws that sit behind brackets, inside junction boxes, or within confined framing bays. The bit ships individually on a card and is sold in a minimum quantity of six units per order.

This bit is suited for residential and light commercial installation work across multiple trades. Electricians driving screws into deep panel knockouts, HVAC technicians securing access panels, and plumbers fastening trim components in confined rough-in areas will find the 4-inch length useful. The No. 1 Phillips tip size is appropriate for smaller machine screws and sheet metal screws commonly found in HVAC cabinets and electrical enclosures.

Key Features

• No. 1 Phillips tip for smaller machine screws and sheet metal fasteners
• 4-inch overall length for extended reach into recessed and hard-to-access locations
• Compatible with standard hex-shank power drivers and drill/drivers
• Packaged individually on a card for single-bit inventory or point-of-use storage
• Lightweight at 0.07 pounds for reduced hand fatigue during repetitive use

Compatibility

Designed as a standard hex-shank screwdriver bit for use with quarter-inch hex chuck power drivers, drill/drivers, and impact-ready bit holders commonly used across the electrical, HVAC, plumbing, and general construction trades.

Installation Notes

This bit is installed and removed by hand into any quarter-inch hex bit holder or quick-change chuck. No tools or power shutoff procedures are required to change bits. Inspect the tip for wear before each use — a worn Phillips tip will cam out under torque and damage fastener heads. Bits should not be used with impact drivers unless confirmed compatible with impact-rated holders.