Value Collection R83924484 4-40 X 1 in Round Head Slotted Screw

Product Description

The VALUE COLLECTION R83924484 is a 4-40 UNC machine screw with a round head and slotted drive, manufactured from 18-8 stainless steel with a bright uncoated finish. It measures 1 inch in length under the head and meets standard inch-system thread specifications. The 18-8 stainless steel construction provides solid corrosion resistance, making this fastener suitable for general-purpose assembly in environments where moisture or mild chemical exposure is a concern. Licensed electricians, HVAC technicians, panel fabricators, and mechanical contractors commonly use 4-40 screws when securing light-gauge components, terminal blocks, and small mechanical assemblies.

This screw is used across a wide range of light commercial and residential trade applications, including electrical enclosures, control panel assembly, equipment covers, and small mechanical fixtures. The 4-40 thread size is a standard UNC designation widely encountered in instrumentation, HVAC controls, and electrical hardware. The slotted drive accepts a standard flat-blade screwdriver, making it compatible with basic hand tools found on any service truck.

Key Features

• 4-40 UNC thread for broad compatibility with standard tapped holes in trade hardware
• 1 inch length under head for consistent installation depth in standard applications
• 18-8 stainless steel construction resists corrosion in damp or mildly corrosive environments
• Round head profile distributes clamping load evenly across the mating surface
• Slotted drive accepts standard flat-blade screwdrivers without specialized bits
• Bright uncoated finish maintains dimensional tolerances without added coating thickness

Compatibility

Designed as a standard 4-40 UNC machine screw for use in any application requiring this thread size and inch-system fastener in a round head slotted configuration.

Installation Notes

Install using a flat-blade screwdriver sized to the slot width to avoid cam-out or head damage. De-energize any electrical equipment before installing or removing fasteners in or near live panels, in accordance with applicable NEC lockout and tagout procedures. Do not overtighten stainless steel fasteners, as the material is susceptible to galling when threads are driven under excessive torque without lubrication. Inspect threads on both the screw and mating component before installation to ensure clean engagement.