Value Collection R52000830 4-40 Unc Machine Screw

Product Description

The VALUE COLLECTION R52000830 is a pan head machine screw designed for secure fastening in light-duty mechanical and electrical assemblies. Threaded to 4-40 UNC specifications, it measures 0.75 inches in length under the head. The pan head profile and Phillips drive make it compatible with standard power and hand tools. Constructed from Grade J82 steel with a zinc-plated finish, the screw resists corrosion in typical indoor environments. An external tooth washer style is integrated at the bearing surface, providing additional resistance to loosening under vibration.

This fastener is suited for panel assembly, electrical enclosures, control boards, and light structural connections where a 4-40 UNC thread form is specified. The zinc-plated finish makes it appropriate for indoor or protected environments. It is commonly used by electricians, HVAC technicians, and equipment assemblers when securing covers, brackets, and terminal components in residential and commercial equipment.

Key Features

• 4-40 UNC thread form for compatibility with standard tapped holes in that size
• 0.75 inch length under head suits shallow to medium-depth fastening applications
• Phillips drive accepts both manual and powered screwdrivers
• Grade J82 steel construction provides reliable tensile strength for light-duty use
• Zinc-plated finish adds corrosion resistance for indoor service environments
• External tooth washer style resists fastener back-out under vibration

Compatibility

Designed as a standard 4-40 UNC pan head machine screw suitable for any application requiring that thread form, drive style, and 0.75 inch under-head length.

Installation Notes

Installation requires a Phillips screwdriver or driver bit matched to the pan head size. De-energize any electrical equipment before fastening or removing screws in panel or control board applications. Apply only hand-tight or low-torque power driving to avoid stripping the 4-40 thread in tapped aluminum or plastic substrates. Follow applicable NEC or equipment manufacturer guidelines when fastening within electrical enclosures.