Value Collection R63060244 Flat Head Machine Screw 1/4-20

Product Description

The VALUE COLLECTION R63060244 is a 1/4-20 x 1/2 inch flat head slotted machine screw manufactured from 18-8 stainless steel with a bright, uncoated finish. The flat head profile sits flush with the mating surface when fully driven, making it well-suited for applications where a low-profile fastener is required. The slotted drive accepts a standard flat-blade screwdriver. Thread specification follows the Unified National Coarse (UNC) standard at 1/4-20, meaning 20 threads per inch on a 1/4-inch nominal diameter shank. Overall length is 1/2 inch, measured from the top of the head to the end of the shank. This fastener is sold in a minimum order quantity of 100 pieces per order.

This screw is commonly used in light mechanical assemblies, electrical enclosures, HVAC panels, plumbing fixtures, and general trade applications where corrosion resistance is needed. The 18-8 stainless steel construction provides solid resistance to rust and mild chemical exposure, making it appropriate for both indoor and outdoor installations in moderate environments. Trades such as HVAC technicians, electricians, and plumbers frequently use UNC machine screws of this specification when fastening sheet metal, junction boxes, access panels, and equipment covers.

Key Features

• 1/4-20 UNC thread form for broad compatibility with standard tapped holes and nuts
• Flat head profile allows flush seating in countersunk holes
• Slotted drive accepts standard flat-blade screwdrivers
• 18-8 stainless steel construction provides corrosion resistance in moderate environments
• Bright uncoated finish maintains dimensional consistency and clean appearance
• Sold in multiples of 100, suitable for recurring maintenance and service stock

Compatibility

Designed for use in any application requiring a 1/4-20 UNC flat head slotted machine screw with a 1/2-inch overall length, including tapped holes, threaded inserts, and standard hex nuts of matching thread specification.

Installation Notes

Installation requires a flat-blade screwdriver sized to fit the slotted head. For flush mounting, the receiving material should be countersunk to match the flat head angle prior to fastener installation. De-energize all electrical equipment before fastening or removing screws on live panels or enclosures. Apply appropriate thread lubricant or anti-seize compound when installing stainless steel fasteners into stainless steel tapped holes to reduce galling risk.