Value Collection R52000331 Machine Screw 1/4-20 X 1/2 in

Product Description

The VALUE COLLECTION R52000331 is a 1/4-20 x 1/2 inch round head slotted machine screw manufactured from brass. The screw measures 1/2 inch in length under the head and follows the Inch system of measurement. It conforms to ASME B18.6.3, the standard governing slotted and cross-recessed head machine screws. The round head profile provides a low-profile bearing surface without a washer, making it suitable for fastening thin panels, covers, and assemblies where flush or semi-flush seating is needed. Brass construction offers natural corrosion resistance and is well suited for applications requiring non-magnetic or non-ferrous fasteners. This screw is a standard threaded fastener used by HVAC, electrical, plumbing, and general trade technicians for panel and equipment assembly work.

This fastener is appropriate for light-duty mechanical and electrical enclosure assembly, instrument panels, access covers, and similar applications where a 1/4-20 coarse thread brass screw is specified. The round head slotted drive accommodates a standard flat-blade screwdriver, making it a straightforward choice in situations where Phillips or hex tooling is unavailable or not required. Typical use is in indoor or low-exposure environments where brass corrosion resistance is an advantage over steel. It ships as a single-piece package with a minimum order quantity of 100 units.

Key Features

• 1/4-20 coarse thread provides strong thread engagement in standard tapped holes
• 1/2 inch length under head suits thin panel and cover fastening applications
• Brass material offers corrosion resistance and non-magnetic properties
• Round head slotted drive compatible with standard flat-blade screwdrivers
• No washer required — without-washer style for direct bearing on the fastened surface
• Conforms to ASME B18.6.3 for dimensional consistency and interchangeability

Compatibility

Designed as a standard 1/4-20 coarse thread machine screw for use in any tapped hole or nut conforming to the 1/4-20 UNC thread form per inch-system fastener specifications.

Installation Notes

Install with a flat-blade screwdriver sized to the slotted head to avoid cam-out and head damage. De-energize electrical panels and equipment before fastening or removing screws in live enclosures, following applicable NEC guidelines. Do not overtighten brass screws, as the material is softer than steel and susceptible to thread stripping under excessive torque. Inspect threads in the mating hole for debris or damage before installation.