Value Collection 580637PR 1/4-20 Flat Head Slotted Machine Screw

Product Description

The VALUE COLLECTION 580637PR is a 1/4-20 Unified National Coarse (UNC) machine screw with a flat head and slotted drive. It measures 1-1/4 inches in overall length and is manufactured from Grade 2 steel with a zinc finish for basic corrosion resistance. This fastener is a standard inch-series screw used in light-duty mechanical assemblies, panel mounting, and general fabrication work. It is installed by HVAC technicians, electricians, plumbers, and general maintenance trades wherever a flush-seating, flat-head fastener is required. The zinc coating provides surface protection in dry to mildly humid environments.

This screw is suited for use in equipment panels, junction boxes, brackets, and light structural assemblies that call for a 1/4-20 UNC thread pattern. The flat head design allows the fastener to sit flush with or countersink into the mating surface, making it appropriate for applications where a raised head would interfere with fit or function. Sold individually as a single piece with a minimum order quantity of 100 units, this screw is a practical stock item for service vans, shop inventory, and maintenance departments.

Key Features

• 1/4-20 UNC thread for broad compatibility with standard inch-series tapped holes and nuts
• Flat head profile allows flush or countersunk seating in mating material
• Slotted drive compatible with standard flat-blade screwdrivers
• Grade 2 steel construction provides adequate strength for light-duty fastening applications
• Zinc finish offers basic corrosion protection in dry and mildly humid environments
• 1-1/4 inch overall length suits moderate-depth panel and bracket installations

Compatibility

Designed for use in any application requiring a 1/4-20 UNC thread, flat head, slotted-drive machine screw in an inch-measurement system.

Installation Notes

Install with a flat-blade screwdriver sized to the slotted head to avoid cam-out and head damage. Ensure the mating hole is tapped to 1/4-20 UNC or that the correct nut is used before driving the fastener. Do not exceed the torque capacity of Grade 2 steel; this fastener is not rated for high-strength or structural load applications. De-energize any electrical equipment before fastening panels or enclosures per applicable NEC guidelines.