Value Collection R63066281 Machine Screw 1/2-13 X 2-1/2 in

Product Description

The VALUE COLLECTION R63066281 is a 1/2-13 UNC flat head slotted machine screw measuring 2-1/2 inches in overall length. Manufactured from 18-8 stainless steel with a bright, uncoated finish, this fastener delivers corrosion resistance suitable for general industrial, mechanical, and maintenance applications. The flat head profile sits flush with or below the surface of the mating material when properly countersunk, making it a standard choice where a low-profile fastener is required. Installed by millwrights, maintenance technicians, and general tradespeople, it is driven with a standard flat-blade screwdriver or matching slotted bit.

This screw is suited for use in assemblies requiring a 1/2-13 UNC thread pattern in inch-measurement systems. The 18-8 stainless steel construction makes it appropriate for environments with moderate moisture or corrosion exposure, including food service equipment, HVAC structural components, plumbing fixture mounting, and general fabrication. It is sold individually per package with a minimum order quantity of 2 units. The full 2-1/2 inch length is measured as overall length, with the usable length under the head also equal to 2-1/2 inches, indicating the flat head is included in the stated measurement.

Key Features

• 1/2-13 UNC thread size for standard inch-system fastener applications
• Flat head profile for flush or countersunk installations
• Slotted drive compatible with standard flat-blade screwdrivers and bits
• 18-8 stainless steel construction provides corrosion resistance without coating
• Bright, uncoated finish — no plating to degrade or flake under torque
• Overall length of 2-1/2 inches with no washer style

Compatibility

Designed as a standard inch-series UNC machine screw for use in any application requiring a 1/2-13 thread, flat head profile, and slotted drive in stainless steel.

Installation Notes

Installation is performed by hand-threading into a properly tapped or pre-threaded hole before driving with a flat-blade screwdriver or matching power bit. A correctly sized countersink should be prepared in the mating material to seat the flat head flush. Avoid over-torquing stainless steel fasteners, as 18-8 material is susceptible to galling — apply an appropriate anti-seize compound when working with stainless-to-stainless assemblies. Power down or de-energize any equipment before fastener work on live mechanical or electrical enclosures.